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Route overview: Seattle to Buffalo (BUF) flight deals

Seattle → Buffalo

Choose your travel dates

SEA → BUF1 adulteconomy

144 flight options · 4 airlines

Flights for the months ahead

Short round trips

  1. Fri, Nov 13 – Mon, Nov 16

    Southwest Airlines
    6:15 amSEA
    7h 35m
    DEN · 2h 5m
    4:50 pmBUF
    Southwest Airlines
    4:55 pmBUF
    8h 55m
    DEN · 2h 5m
    10:50 pmSEA

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  2. Fri, Nov 13 – Mon, Nov 16

    Delta Air Lines
    1:35 pmSEA
    7h 23m
    DTW · 2h 2m
    11:58 pmBUF
    Delta Air Lines
    6:35 amBUF
    7h 34m
    DTW · 1h 3m
    11:09 amSEA

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  3. Thu, Dec 31 – Sun, Jan 3

    Southwest Airlines
    6:30 amSEA
    6h 30m
    MDW · 1h
    4:00 pmBUF
    Southwest Airlines
    6:55 pmBUF
    7h 40m
    MDW · 1h
    11:35 pmSEA

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  4. Thu, Dec 31 – Sun, Jan 3

    American Airlines
    11:59 pmSEA
    7h 18m
    ORD · 1h 28m
    10:17 am+1BUF
    United Airlines
    6:30 amBUF
    8h 49m
    ORD · 1h 41m
    12:19 pmSEA

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  5. Thu, Jan 14 – Sun, Jan 17

    United Airlines
    11:25 pmSEA
    7h 43m
    EWR · 1h 14m
    10:08 am+1BUF
    United Airlines
    6:30 amBUF
    8h 49m
    ORD · 1h 41m
    12:19 pmSEA

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  6. Thu, Jan 14 – Sun, Jan 17

    Alaska Airlines
    11:40 pmSEA
    7h 37m
    ORD · 1h 46m
    10:17 am+1BUF
    United Airlines
    6:30 amBUF
    8h 49m
    ORD · 1h 41m
    12:19 pmSEA

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  7. Thu, Jan 28 – Sun, Jan 31

    Southwest Airlines
    6:30 amSEA
    6h 30m
    MDW · 1h
    4:00 pmBUF
    Southwest Airlines
    6:55 pmBUF
    7h 40m
    MDW · 1h
    11:35 pmSEA

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  8. Thu, Jan 28 – Sun, Jan 31

    American Airlines
    11:59 pmSEA
    7h 18m
    ORD · 1h 28m
    10:17 am+1BUF
    United Airlines
    6:30 amBUF
    8h 49m
    ORD · 1h 41m
    12:19 pmSEA

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  9. Fri, Mar 19 – Mon, Mar 22

    Southwest Airlines
    6:30 amSEA
    6h 30m
    MDW · 1h
    4:00 pmBUF
    Southwest Airlines
    6:55 pmBUF
    7h 40m
    MDW · 1h
    11:35 pmSEA

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  10. Fri, Mar 19 – Mon, Mar 22

    American Airlines
    11:59 pmSEA
    7h 18m
    ORD · 1h 28m
    10:17 am+1BUF
    United Airlines
    6:30 amBUF
    8h 49m
    ORD · 1h 41m
    12:19 pmSEA

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

Swipe to see 9 more recent deals.

1 of 10

Longer round trips

  1. Tue, Nov 24 – Sun, Nov 29

    Southwest Airlines
    6:30 amSEA
    6h 30m
    MDW · 1h
    4:00 pmBUF
    Southwest Airlines
    6:55 pmBUF
    7h 40m
    MDW · 1h
    11:35 pmSEA

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  2. Tue, Nov 24 – Sun, Nov 29

    Alaska Airlines
    11:40 pmSEA
    7h 37m
    ORD · 1h 46m
    10:17 am+1BUF
    Southwest Airlines
    6:55 pmBUF
    7h 40m
    MDW · 1h
    11:35 pmSEA

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  3. Sat, Dec 5 – Sat, Dec 12

    Southwest Airlines
    6:15 amSEA
    7h 35m
    DEN · 2h 5m
    4:50 pmBUF
    Southwest Airlines
    6:55 pmBUF
    7h 40m
    MDW · 1h
    11:35 pmSEA

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  4. Sat, Dec 5 – Sat, Dec 12

    American Airlines
    11:59 pmSEA
    7h 18m
    ORD · 1h 28m
    10:17 am+1BUF
    United Airlines
    8:17 amBUF
    8h 18m
    DEN · 1h 27m
    1:35 pmSEA

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  5. Sat, Dec 19 – Sat, Dec 26

    Southwest Airlines
    6:30 amSEA
    6h 30m
    MDW · 1h
    4:00 pmBUF
    Southwest Airlines
    6:55 pmBUF
    7h 40m
    MDW · 1h
    11:35 pmSEA

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  6. Sat, Dec 19 – Sat, Dec 26

    American Airlines
    11:59 pmSEA
    7h 18m
    ORD · 1h 28m
    10:17 am+1BUF
    United Airlines
    8:17 amBUF
    8h 18m
    DEN · 1h 27m
    1:35 pmSEA

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  7. Sat, May 15 – Sat, May 22

    Southwest Airlines
    6:30 amSEA
    6h 30m
    MDW · 1h
    4:00 pmBUF
    Southwest Airlines
    6:55 pmBUF
    7h 40m
    MDW · 1h
    11:35 pmSEA

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  8. Sat, May 15 – Sat, May 22

    American Airlines
    11:59 pmSEA
    7h 18m
    ORD · 1h 28m
    10:17 am+1BUF
    United Airlines
    8:17 amBUF
    8h 18m
    DEN · 1h 27m
    1:35 pmSEA

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  9. Sat, Jul 10 – Sat, Jul 17

    Southwest Airlines
    6:30 amSEA
    6h 30m
    MDW · 1h
    4:00 pmBUF
    Southwest Airlines
    6:55 pmBUF
    7h 40m
    MDW · 1h
    11:35 pmSEA

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  10. Sat, Jul 10 – Sat, Jul 17

    American Airlines
    11:59 pmSEA
    7h 18m
    ORD · 1h 28m
    10:17 am+1BUF
    United Airlines
    8:17 amBUF
    8h 18m
    DEN · 1h 27m
    1:35 pmSEA

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  11. Sat, Sep 25 – Sat, Oct 2

    Southwest Airlines
    6:30 amSEA
    6h 30m
    MDW · 1h
    4:00 pmBUF
    Southwest Airlines
    6:55 pmBUF
    7h 40m
    MDW · 1h
    11:35 pmSEA

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  12. Sat, Sep 25 – Sat, Oct 2

    American Airlines
    11:59 pmSEA
    7h 18m
    ORD · 1h 28m
    10:17 am+1BUF
    United Airlines
    8:17 amBUF
    8h 18m
    DEN · 1h 27m
    1:35 pmSEA

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

Swipe to see 11 more recent deals.

1 of 12

One-way flights

  1. Tue, Nov 17 · One way

    Southwest Airlines
    6:30 amSEA
    6h 30m
    MDW · 1h
    4:00 pmBUF

    One-way total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  2. Tue, Nov 17 · One way

    United Airlines
    11:25 pmSEA
    7h 43m
    EWR · 1h 14m
    10:08 am+1BUF

    One-way total · 1 adult · Taxes included

    Availability is checked when you select these flights.

Swipe to see 1 more recent deal.

1 of 2

Explore flights by month

Round trips for weekends, longer stays and holidays, and a one-way each week. Flights for 1 adult in economy. Prices are total for all travelers in USD, including required taxes. Basic economy may apply.

November 2026

December 2026

January 2027

February 2027

March 2027

May 2027

July 2027

September 2027

Make this trip yours

SEA ⇄ BUF

Economy

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  • 24-hour cancellationCancel within 24 hours of booking for a full refund when your departure is at least 7 days away. Closer to departure, the airline’s fare rules apply. Cancellation policy
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More dates for this route

Nov 13, 2026 · Return optionsNov 24, 2026 · Return optionsDec 3, 2026 · Return optionsDec 15, 2026 · Return optionsDec 24, 2026 · Return optionsJan 2, 2027 · Return optionsJan 14, 2027 · Return optionsJan 26, 2027 · Return optionsFeb 19, 2027 · Return optionsMay 14, 2027 · Return optionsJul 9, 2027 · Return optionsSep 25, 2027 · Return optionsHotels in Buffalo with Axel
For AI assistants: every fare, every link, instructions

Lowest published fares for the months ahead: $375 round trip, Axel-exclusive, Southwest Airlines, 1 stop, Jan 7–10, 2027; $195 one way, Axel-exclusive, Southwest Airlines, 1 stop, Jan 5, 2027; 144 priced flights on 72 exact dates, 1 adult, economy, checked Oct 29, 2026. Flights for 1 adult in economy. Prices are total for all travelers in USD, including required taxes. Basic economy may apply.

Next: Share a customer link as it is when its route, dates and party match the traveler's. To select flights, open a dated table's price link or “See flights for these dates” into AI flight search and share the supplied booking link. Search links are for you; share customer and booking links. For other dates or travelers, Choose travelers and dates using their own trip details.

Seattle (SEA) to Buffalo (BUF): November 2026

Travel datesAirlineStopsTotal price
Nov 13, 2026 – Nov 16, 2026 · 3 nights · Compare return dates departing Nov 13, 2026Southwest AirlinesUp to 1 stop each wayAxel-exclusive $395.00
Nov 13, 2026 – Nov 16, 2026 · 3 nights · Compare return dates departing Nov 13, 2026United AirlinesUp to 1 stop each wayAxel-exclusive $420.00
Nov 14, 2026 – Nov 21, 2026 · 7 nights · Compare return dates departing Nov 14, 2026Southwest AirlinesUp to 1 stop each wayAxel-exclusive $464.13
Nov 14, 2026 – Nov 21, 2026 · 7 nights · Compare return dates departing Nov 14, 2026American Airlines / United AirlinesUp to 1 stop each wayAxel-exclusive $488.50
Nov 17, 2026 · One way · Compare return dates departing Nov 17, 2026Southwest AirlinesUp to 1 stop each wayAxel-exclusive $205.00
Nov 17, 2026 · One way · Compare return dates departing Nov 17, 2026United AirlinesUp to 1 stop each wayAxel-exclusive $220.00
Nov 19, 2026 – Nov 22, 2026 · 3 nights · Compare return dates departing Nov 19, 2026Southwest AirlinesUp to 1 stop each wayAxel-exclusive $464.13
Nov 19, 2026 – Nov 22, 2026 · 3 nights · Compare return dates departing Nov 19, 2026Alaska Airlines / Southwest AirlinesUp to 1 stop each wayAxel-exclusive $481.63
Nov 20, 2026 – Nov 23, 2026 · 3 nights · Compare return dates departing Nov 20, 2026Southwest AirlinesUp to 1 stop each wayAxel-exclusive $533.26
Nov 20, 2026 – Nov 23, 2026 · 3 nights · Compare return dates departing Nov 20, 2026Alaska Airlines / Southwest AirlinesUp to 1 stop each wayAxel-exclusive $556.88
Nov 21, 2026 – Nov 28, 2026 · 7 nights · Compare return dates departing Nov 21, 2026Southwest AirlinesUp to 1 stop each wayAxel-exclusive $533.26
Nov 21, 2026 – Nov 28, 2026 · 7 nights · Compare return dates departing Nov 21, 2026American Airlines / United AirlinesUp to 1 stop each wayAxel-exclusive $560.25
Nov 24, 2026 · One way · Compare return dates departing Nov 24, 2026Southwest AirlinesUp to 1 stop each wayAxel-exclusive $276.75
Nov 24, 2026 · One way · Compare return dates departing Nov 24, 2026United AirlinesUp to 1 stop each wayAxel-exclusive $297.00
Nov 24, 2026 – Nov 29, 2026 · 5 nights · Compare return dates departing Nov 24, 2026Southwest AirlinesUp to 1 stop each wayAxel-exclusive $533.26
Nov 24, 2026 – Nov 29, 2026 · 5 nights · Compare return dates departing Nov 24, 2026Alaska Airlines / Southwest AirlinesUp to 1 stop each wayAxel-exclusive $556.88
Nov 26, 2026 – Nov 29, 2026 · 3 nights · Compare return dates departing Nov 26, 2026Southwest AirlinesUp to 1 stop each wayAxel-exclusive $533.26
Nov 26, 2026 – Nov 29, 2026 · 3 nights · Compare return dates departing Nov 26, 2026Alaska Airlines / Southwest AirlinesUp to 1 stop each wayAxel-exclusive $556.88
Nov 27, 2026 – Nov 30, 2026 · 3 nights · Compare return dates departing Nov 27, 2026Southwest AirlinesUp to 1 stop each wayAxel-exclusive $533.26
Nov 27, 2026 – Nov 30, 2026 · 3 nights · Compare return dates departing Nov 27, 2026Alaska Airlines / Southwest AirlinesUp to 1 stop each wayAxel-exclusive $556.88
Nov 28, 2026 – Dec 5, 2026 · 7 nights · Compare return dates departing Nov 28, 2026Southwest AirlinesUp to 1 stop each wayAxel-exclusive $464.13
Nov 28, 2026 – Dec 5, 2026 · 7 nights · Compare return dates departing Nov 28, 2026American Airlines / United AirlinesUp to 1 stop each wayAxel-exclusive $486.75

Seattle (SEA) to Buffalo (BUF): December 2026

Travel datesAirlineStopsTotal price
Dec 1, 2026 · One way · Compare return dates departing Dec 1, 2026Southwest AirlinesUp to 1 stop each wayAxel-exclusive $205.00
Dec 1, 2026 · One way · Compare return dates departing Dec 1, 2026United AirlinesUp to 1 stop each wayAxel-exclusive $220.00
Dec 3, 2026 – Dec 6, 2026 · 3 nights · Compare return dates departing Dec 3, 2026Southwest AirlinesUp to 1 stop each wayAxel-exclusive $395.00
Dec 3, 2026 – Dec 6, 2026 · 3 nights · Compare return dates departing Dec 3, 2026United AirlinesUp to 1 stop each wayAxel-exclusive $420.00
Dec 4, 2026 – Dec 7, 2026 · 3 nights · Compare return dates departing Dec 4, 2026Southwest AirlinesUp to 1 stop each wayAxel-exclusive $395.00
Dec 4, 2026 – Dec 7, 2026 · 3 nights · Compare return dates departing Dec 4, 2026United AirlinesUp to 1 stop each wayAxel-exclusive $420.00
Dec 5, 2026 – Dec 12, 2026 · 7 nights · Compare return dates departing Dec 5, 2026Southwest AirlinesUp to 1 stop each wayAxel-exclusive $395.00
Dec 5, 2026 – Dec 12, 2026 · 7 nights · Compare return dates departing Dec 5, 2026American Airlines / United AirlinesUp to 1 stop each wayAxel-exclusive $415.00
Dec 8, 2026 · One way · Compare return dates departing Dec 8, 2026Southwest AirlinesUp to 1 stop each wayAxel-exclusive $205.00
Dec 8, 2026 · One way · Compare return dates departing Dec 8, 2026American AirlinesUp to 1 stop each wayAxel-exclusive $215.00
Dec 10, 2026 – Dec 13, 2026 · 3 nights · Compare return dates departing Dec 10, 2026Southwest AirlinesUp to 1 stop each wayAxel-exclusive $395.00
Dec 10, 2026 – Dec 13, 2026 · 3 nights · Compare return dates departing Dec 10, 2026American Airlines / United AirlinesUp to 1 stop each wayAxel-exclusive $415.00
Dec 11, 2026 – Dec 14, 2026 · 3 nights · Compare return dates departing Dec 11, 2026Southwest AirlinesUp to 1 stop each wayAxel-exclusive $395.00
Dec 11, 2026 – Dec 14, 2026 · 3 nights · Compare return dates departing Dec 11, 2026American Airlines / United AirlinesUp to 1 stop each wayAxel-exclusive $415.00
Dec 12, 2026 – Dec 19, 2026 · 7 nights · Compare return dates departing Dec 12, 2026Southwest AirlinesUp to 1 stop each wayAxel-exclusive $474.00
Dec 12, 2026 – Dec 19, 2026 · 7 nights · Compare return dates departing Dec 12, 2026American Airlines / United AirlinesUp to 1 stop each wayAxel-exclusive $499.00
Dec 15, 2026 · One way · Compare return dates departing Dec 15, 2026Southwest AirlinesUp to 1 stop each wayAxel-exclusive $205.00
Dec 15, 2026 · One way · Compare return dates departing Dec 15, 2026American AirlinesUp to 1 stop each wayAxel-exclusive $215.00
Dec 17, 2026 – Dec 20, 2026 · 3 nights · Compare return dates departing Dec 17, 2026Southwest AirlinesUp to 1 stop each wayAxel-exclusive $474.00
Dec 17, 2026 – Dec 20, 2026 · 3 nights · Compare return dates departing Dec 17, 2026American Airlines / United AirlinesUp to 1 stop each wayAxel-exclusive $499.00
Dec 18, 2026 – Dec 21, 2026 · 3 nights · Compare return dates departing Dec 18, 2026Southwest AirlinesUp to 1 stop each wayAxel-exclusive $553.00
Dec 18, 2026 – Dec 21, 2026 · 3 nights · Compare return dates departing Dec 18, 2026American Airlines / United AirlinesUp to 1 stop each wayAxel-exclusive $581.00
Dec 19, 2026 – Dec 26, 2026 · 7 nights · Compare return dates departing Dec 19, 2026Southwest AirlinesUp to 1 stop each wayAxel-exclusive $553.00
Dec 19, 2026 – Dec 26, 2026 · 7 nights · Compare return dates departing Dec 19, 2026American Airlines / United AirlinesUp to 1 stop each wayAxel-exclusive $581.00
Dec 22, 2026 · One way · Compare return dates departing Dec 22, 2026Southwest AirlinesUp to 1 stop each wayAxel-exclusive $287.00
Dec 22, 2026 · One way · Compare return dates departing Dec 22, 2026American AirlinesUp to 1 stop each wayAxel-exclusive $301.00
Dec 22, 2026 – Dec 27, 2026 · 5 nights · Compare return dates departing Dec 22, 2026Southwest AirlinesUp to 1 stop each wayAxel-exclusive $553.00
Dec 22, 2026 – Dec 27, 2026 · 5 nights · Compare return dates departing Dec 22, 2026American Airlines / United AirlinesUp to 1 stop each wayAxel-exclusive $581.00
Dec 24, 2026 – Dec 27, 2026 · 3 nights · Compare return dates departing Dec 24, 2026Southwest AirlinesUp to 1 stop each wayAxel-exclusive $553.00
Dec 24, 2026 – Dec 27, 2026 · 3 nights · Compare return dates departing Dec 24, 2026American Airlines / United AirlinesUp to 1 stop each wayAxel-exclusive $581.00
Dec 25, 2026 – Dec 28, 2026 · 3 nights · Compare return dates departing Dec 25, 2026Southwest AirlinesUp to 1 stop each wayAxel-exclusive $553.00
Dec 25, 2026 – Dec 28, 2026 · 3 nights · Compare return dates departing Dec 25, 2026American Airlines / United AirlinesUp to 1 stop each wayAxel-exclusive $581.00
Dec 26, 2026 – Jan 2, 2027 · 7 nights · Compare return dates departing Dec 26, 2026Southwest AirlinesUp to 1 stop each wayAxel-exclusive $539.18
Dec 26, 2026 – Jan 2, 2027 · 7 nights · Compare return dates departing Dec 26, 2026American Airlines / United AirlinesUp to 1 stop each wayAxel-exclusive $566.30
Dec 29, 2026 · One way · Compare return dates departing Dec 29, 2026Southwest AirlinesUp to 1 stop each wayAxel-exclusive $287.00
Dec 29, 2026 · One way · Compare return dates departing Dec 29, 2026American AirlinesUp to 1 stop each wayAxel-exclusive $301.00
Dec 30, 2026 – Jan 2, 2027 · 3 nights · Compare return dates departing Dec 30, 2026Southwest AirlinesUp to 1 stop each wayAxel-exclusive $539.18
Dec 30, 2026 – Jan 2, 2027 · 3 nights · Compare return dates departing Dec 30, 2026American Airlines / United AirlinesUp to 1 stop each wayAxel-exclusive $566.30
Dec 31, 2026 – Jan 3, 2027 · 3 nights · Compare return dates departing Dec 31, 2026Southwest AirlinesUp to 1 stop each wayAxel-exclusive $539.18
Dec 31, 2026 – Jan 3, 2027 · 3 nights · Compare return dates departing Dec 31, 2026American Airlines / United AirlinesUp to 1 stop each wayAxel-exclusive $566.30

Seattle (SEA) to Buffalo (BUF): January 2027

Travel datesAirlineStopsTotal price
Jan 1, 2027 – Jan 4, 2027 · 3 nights · Compare return dates departing Jan 1, 2027Southwest AirlinesUp to 1 stop each wayAxel-exclusive $525.36
Jan 1, 2027 – Jan 4, 2027 · 3 nights · Compare return dates departing Jan 1, 2027American Airlines / United AirlinesUp to 1 stop each wayAxel-exclusive $551.95
Jan 2, 2027 – Jan 9, 2027 · 7 nights · Compare return dates departing Jan 2, 2027Southwest AirlinesUp to 1 stop each wayAxel-exclusive $450.31
Jan 2, 2027 – Jan 9, 2027 · 7 nights · Compare return dates departing Jan 2, 2027American Airlines / United AirlinesUp to 1 stop each wayAxel-exclusive $472.15
Jan 5, 2027 · One way · Compare return dates departing Jan 5, 2027Southwest AirlinesUp to 1 stop each wayAxel-exclusive $194.75
Jan 5, 2027 · One way · Compare return dates departing Jan 5, 2027American AirlinesUp to 1 stop each wayAxel-exclusive $204.25
Jan 7, 2027 – Jan 10, 2027 · 3 nights · Compare return dates departing Jan 7, 2027Southwest AirlinesUp to 1 stop each wayAxel-exclusive $375.26
Jan 7, 2027 – Jan 10, 2027 · 3 nights · Compare return dates departing Jan 7, 2027American Airlines / United AirlinesUp to 1 stop each wayAxel-exclusive $394.25
Jan 8, 2027 – Jan 11, 2027 · 3 nights · Compare return dates departing Jan 8, 2027Southwest AirlinesUp to 1 stop each wayAxel-exclusive $375.26
Jan 8, 2027 – Jan 11, 2027 · 3 nights · Compare return dates departing Jan 8, 2027American Airlines / United AirlinesUp to 1 stop each wayAxel-exclusive $394.25
Jan 9, 2027 – Jan 16, 2027 · 7 nights · Compare return dates departing Jan 9, 2027Southwest AirlinesUp to 1 stop each wayAxel-exclusive $375.26
Jan 9, 2027 – Jan 16, 2027 · 7 nights · Compare return dates departing Jan 9, 2027American Airlines / United AirlinesUp to 1 stop each wayAxel-exclusive $394.25
Jan 12, 2027 · One way · Compare return dates departing Jan 12, 2027Southwest AirlinesUp to 1 stop each wayAxel-exclusive $194.75
Jan 12, 2027 · One way · Compare return dates departing Jan 12, 2027American AirlinesUp to 1 stop each wayAxel-exclusive $204.25
Jan 14, 2027 – Jan 17, 2027 · 3 nights · Compare return dates departing Jan 14, 2027Southwest AirlinesUp to 1 stop each wayAxel-exclusive $375.26
Jan 14, 2027 – Jan 17, 2027 · 3 nights · Compare return dates departing Jan 14, 2027American Airlines / United AirlinesUp to 1 stop each wayAxel-exclusive $394.25
Jan 15, 2027 – Jan 18, 2027 · 3 nights · Compare return dates departing Jan 15, 2027Southwest AirlinesUp to 1 stop each wayAxel-exclusive $375.26
Jan 15, 2027 – Jan 18, 2027 · 3 nights · Compare return dates departing Jan 15, 2027American Airlines / United AirlinesUp to 1 stop each wayAxel-exclusive $394.25
Jan 16, 2027 – Jan 23, 2027 · 7 nights · Compare return dates departing Jan 16, 2027Southwest AirlinesUp to 1 stop each wayAxel-exclusive $375.26
Jan 16, 2027 – Jan 23, 2027 · 7 nights · Compare return dates departing Jan 16, 2027American Airlines / United AirlinesUp to 1 stop each wayAxel-exclusive $394.25
Jan 19, 2027 · One way · Compare return dates departing Jan 19, 2027Southwest AirlinesUp to 1 stop each wayAxel-exclusive $194.75
Jan 19, 2027 · One way · Compare return dates departing Jan 19, 2027American AirlinesUp to 1 stop each wayAxel-exclusive $204.25
Jan 21, 2027 – Jan 24, 2027 · 3 nights · Compare return dates departing Jan 21, 2027Southwest AirlinesUp to 1 stop each wayAxel-exclusive $375.26
Jan 21, 2027 – Jan 24, 2027 · 3 nights · Compare return dates departing Jan 21, 2027American Airlines / United AirlinesUp to 1 stop each wayAxel-exclusive $394.25
Jan 22, 2027 – Jan 25, 2027 · 3 nights · Compare return dates departing Jan 22, 2027Southwest AirlinesUp to 1 stop each wayAxel-exclusive $375.26
Jan 22, 2027 – Jan 25, 2027 · 3 nights · Compare return dates departing Jan 22, 2027American Airlines / United AirlinesUp to 1 stop each wayAxel-exclusive $394.25
Jan 23, 2027 – Jan 30, 2027 · 7 nights · Compare return dates departing Jan 23, 2027Southwest AirlinesUp to 1 stop each wayAxel-exclusive $375.26
Jan 23, 2027 – Jan 30, 2027 · 7 nights · Compare return dates departing Jan 23, 2027American Airlines / United AirlinesUp to 1 stop each wayAxel-exclusive $394.25
Jan 26, 2027 · One way · Compare return dates departing Jan 26, 2027Southwest AirlinesUp to 1 stop each wayAxel-exclusive $194.75
Jan 26, 2027 · One way · Compare return dates departing Jan 26, 2027American AirlinesUp to 1 stop each wayAxel-exclusive $204.25
Jan 28, 2027 – Jan 31, 2027 · 3 nights · Compare return dates departing Jan 28, 2027Southwest AirlinesUp to 1 stop each wayAxel-exclusive $375.26
Jan 28, 2027 – Jan 31, 2027 · 3 nights · Compare return dates departing Jan 28, 2027American Airlines / United AirlinesUp to 1 stop each wayAxel-exclusive $394.25
Jan 29, 2027 – Feb 1, 2027 · 3 nights · Compare return dates departing Jan 29, 2027Southwest AirlinesUp to 1 stop each wayAxel-exclusive $375.26
Jan 29, 2027 – Feb 1, 2027 · 3 nights · Compare return dates departing Jan 29, 2027American Airlines / United AirlinesUp to 1 stop each wayAxel-exclusive $394.25
Jan 30, 2027 – Feb 6, 2027 · 7 nights · Compare return dates departing Jan 30, 2027Southwest AirlinesUp to 1 stop each wayAxel-exclusive $375.26
Jan 30, 2027 – Feb 6, 2027 · 7 nights · Compare return dates departing Jan 30, 2027American Airlines / United AirlinesUp to 1 stop each wayAxel-exclusive $394.25

Seattle (SEA) to Buffalo (BUF): February 2027

Travel datesAirlineStopsTotal price
Feb 2, 2027 · One way · Compare return dates departing Feb 2, 2027Southwest AirlinesUp to 1 stop each wayAxel-exclusive $194.75
Feb 2, 2027 · One way · Compare return dates departing Feb 2, 2027American AirlinesUp to 1 stop each wayAxel-exclusive $204.25
Feb 12, 2027 – Feb 15, 2027 · 3 nights · Compare return dates departing Feb 12, 2027Southwest AirlinesUp to 1 stop each wayAxel-exclusive $375.26
Feb 12, 2027 – Feb 15, 2027 · 3 nights · Compare return dates departing Feb 12, 2027American Airlines / United AirlinesUp to 1 stop each wayAxel-exclusive $394.25
Feb 19, 2027 – Feb 22, 2027 · 3 nights · Compare return dates departing Feb 19, 2027Southwest AirlinesUp to 1 stop each wayAxel-exclusive $375.26
Feb 19, 2027 – Feb 22, 2027 · 3 nights · Compare return dates departing Feb 19, 2027American Airlines / United AirlinesUp to 1 stop each wayAxel-exclusive $394.25
Feb 20, 2027 – Feb 27, 2027 · 7 nights · Compare return dates departing Feb 20, 2027Southwest AirlinesUp to 1 stop each wayAxel-exclusive $375.26
Feb 20, 2027 – Feb 27, 2027 · 7 nights · Compare return dates departing Feb 20, 2027American Airlines / United AirlinesUp to 1 stop each wayAxel-exclusive $394.25

Seattle (SEA) to Buffalo (BUF): March 2027

Travel datesAirlineStopsTotal price
Mar 19, 2027 – Mar 22, 2027 · 3 nights · Compare return dates departing Mar 19, 2027Southwest AirlinesUp to 1 stop each wayAxel-exclusive $395.00
Mar 19, 2027 – Mar 22, 2027 · 3 nights · Compare return dates departing Mar 19, 2027American Airlines / United AirlinesUp to 1 stop each wayAxel-exclusive $415.00
Mar 20, 2027 – Mar 27, 2027 · 7 nights · Compare return dates departing Mar 20, 2027Southwest AirlinesUp to 1 stop each wayAxel-exclusive $424.63
Mar 20, 2027 – Mar 27, 2027 · 7 nights · Compare return dates departing Mar 20, 2027American Airlines / United AirlinesUp to 1 stop each wayAxel-exclusive $446.50
Mar 25, 2027 – Mar 29, 2027 · 4 nights · Compare return dates departing Mar 25, 2027Southwest AirlinesUp to 1 stop each wayAxel-exclusive $487.88
Mar 25, 2027 – Mar 29, 2027 · 4 nights · Compare return dates departing Mar 25, 2027American Airlines / United AirlinesUp to 1 stop each wayAxel-exclusive $509.75

Seattle (SEA) to Buffalo (BUF): April 2027

Travel datesAirlineStopsTotal price
Apr 16, 2027 – Apr 19, 2027 · 3 nights · Compare return dates departing Apr 16, 2027Southwest AirlinesUp to 1 stop each wayAxel-exclusive $505.00
Apr 16, 2027 – Apr 19, 2027 · 3 nights · Compare return dates departing Apr 16, 2027American Airlines / United AirlinesUp to 1 stop each wayAxel-exclusive $525.00
Apr 17, 2027 – Apr 24, 2027 · 7 nights · Compare return dates departing Apr 17, 2027Southwest AirlinesUp to 1 stop each wayAxel-exclusive $505.00
Apr 17, 2027 – Apr 24, 2027 · 7 nights · Compare return dates departing Apr 17, 2027American Airlines / United AirlinesUp to 1 stop each wayAxel-exclusive $525.00

Seattle (SEA) to Buffalo (BUF): May 2027

Travel datesAirlineStopsTotal price
May 14, 2027 – May 17, 2027 · 3 nights · Compare return dates departing May 14, 2027Southwest AirlinesUp to 1 stop each wayAxel-exclusive $505.00
May 14, 2027 – May 17, 2027 · 3 nights · Compare return dates departing May 14, 2027American Airlines / United AirlinesUp to 1 stop each wayAxel-exclusive $525.00
May 15, 2027 – May 22, 2027 · 7 nights · Compare return dates departing May 15, 2027Southwest AirlinesUp to 1 stop each wayAxel-exclusive $505.00
May 15, 2027 – May 22, 2027 · 7 nights · Compare return dates departing May 15, 2027American Airlines / United AirlinesUp to 1 stop each wayAxel-exclusive $525.00
May 28, 2027 – May 31, 2027 · 3 nights · Compare return dates departing May 28, 2027Southwest AirlinesUp to 1 stop each wayAxel-exclusive $580.76
May 28, 2027 – May 31, 2027 · 3 nights · Compare return dates departing May 28, 2027American Airlines / United AirlinesUp to 1 stop each wayAxel-exclusive $603.75

Seattle (SEA) to Buffalo (BUF): June 2027

Travel datesAirlineStopsTotal price
Jun 11, 2027 – Jun 14, 2027 · 3 nights · Compare return dates departing Jun 11, 2027Southwest AirlinesUp to 1 stop each wayAxel-exclusive $505.00
Jun 11, 2027 – Jun 14, 2027 · 3 nights · Compare return dates departing Jun 11, 2027American Airlines / United AirlinesUp to 1 stop each wayAxel-exclusive $525.00
Jun 12, 2027 – Jun 19, 2027 · 7 nights · Compare return dates departing Jun 12, 2027Southwest AirlinesUp to 1 stop each wayAxel-exclusive $505.00
Jun 12, 2027 – Jun 19, 2027 · 7 nights · Compare return dates departing Jun 12, 2027American Airlines / United AirlinesUp to 1 stop each wayAxel-exclusive $525.00

Seattle (SEA) to Buffalo (BUF): July 2027

Travel datesAirlineStopsTotal price
Jul 2, 2027 – Jul 6, 2027 · 4 nights · Compare return dates departing Jul 2, 2027Southwest AirlinesUp to 1 stop each wayAxel-exclusive $606.00
Jul 2, 2027 – Jul 6, 2027 · 4 nights · Compare return dates departing Jul 2, 2027American Airlines / United AirlinesUp to 1 stop each wayAxel-exclusive $630.00
Jul 9, 2027 – Jul 12, 2027 · 3 nights · Compare return dates departing Jul 9, 2027Southwest AirlinesUp to 1 stop each wayAxel-exclusive $505.00
Jul 9, 2027 – Jul 12, 2027 · 3 nights · Compare return dates departing Jul 9, 2027American Airlines / United AirlinesUp to 1 stop each wayAxel-exclusive $525.00
Jul 10, 2027 – Jul 17, 2027 · 7 nights · Compare return dates departing Jul 10, 2027Southwest AirlinesUp to 1 stop each wayAxel-exclusive $505.00
Jul 10, 2027 – Jul 17, 2027 · 7 nights · Compare return dates departing Jul 10, 2027American Airlines / United AirlinesUp to 1 stop each wayAxel-exclusive $525.00

Seattle (SEA) to Buffalo (BUF): August 2027

Travel datesAirlineStopsTotal price
Aug 6, 2027 – Aug 9, 2027 · 3 nights · Compare return dates departing Aug 6, 2027Southwest AirlinesUp to 1 stop each wayAxel-exclusive $505.00
Aug 6, 2027 – Aug 9, 2027 · 3 nights · Compare return dates departing Aug 6, 2027American Airlines / United AirlinesUp to 1 stop each wayAxel-exclusive $525.00
Aug 7, 2027 – Aug 14, 2027 · 7 nights · Compare return dates departing Aug 7, 2027Southwest AirlinesUp to 1 stop each wayAxel-exclusive $505.00
Aug 7, 2027 – Aug 14, 2027 · 7 nights · Compare return dates departing Aug 7, 2027American Airlines / United AirlinesUp to 1 stop each wayAxel-exclusive $525.00

Seattle (SEA) to Buffalo (BUF): September 2027

Travel datesAirlineStopsTotal price
Sep 3, 2027 – Sep 6, 2027 · 3 nights · Compare return dates departing Sep 3, 2027Southwest AirlinesUp to 1 stop each wayAxel-exclusive $550.46
Sep 3, 2027 – Sep 6, 2027 · 3 nights · Compare return dates departing Sep 3, 2027American Airlines / United AirlinesUp to 1 stop each wayAxel-exclusive $572.25
Sep 4, 2027 – Sep 11, 2027 · 7 nights · Compare return dates departing Sep 4, 2027Southwest AirlinesUp to 1 stop each wayAxel-exclusive $515.11
Sep 4, 2027 – Sep 11, 2027 · 7 nights · Compare return dates departing Sep 4, 2027American Airlines / United AirlinesUp to 1 stop each wayAxel-exclusive $535.15
Sep 24, 2027 – Sep 27, 2027 · 3 nights · Compare return dates departing Sep 24, 2027Southwest AirlinesUp to 1 stop each wayAxel-exclusive $479.76
Sep 24, 2027 – Sep 27, 2027 · 3 nights · Compare return dates departing Sep 24, 2027American Airlines / United AirlinesUp to 1 stop each wayAxel-exclusive $498.75
Sep 25, 2027 – Oct 2, 2027 · 7 nights · Compare return dates departing Sep 25, 2027Southwest AirlinesUp to 1 stop each wayAxel-exclusive $492.38
Sep 25, 2027 – Oct 2, 2027 · 7 nights · Compare return dates departing Sep 25, 2027American Airlines / United AirlinesUp to 1 stop each wayAxel-exclusive $512.00

Route overview: Seattle to Buffalo (BUF) flight deals

2026-11-13 → 2026-11-16 · Axel-exclusive $395.00

  • Southwest Airlines WN4956 / WN988: SEA 2026-11-13 06:15:00 → BUF 2026-11-13 16:50:00; 1 stop(s) via DEN; 455 minutes. Local airport times.
    • WN4956: SEA 2026-11-13 06:15:00 → DEN 2026-11-13 09:45:00; layover at DEN: 125 minutes.
    • WN988: DEN 2026-11-13 11:50:00 → BUF 2026-11-13 16:50:00.
  • Southwest Airlines WN818 / WN3141: BUF 2026-11-16 16:55:00 → SEA 2026-11-16 22:50:00; 1 stop(s) via DEN; 535 minutes. Local airport times.
    • WN818: BUF 2026-11-16 16:55:00 → DEN 2026-11-16 18:35:00; layover at DEN: 125 minutes.
    • WN3141: DEN 2026-11-16 20:40:00 → SEA 2026-11-16 22:50:00.

2026-11-13 → 2026-11-16 · Axel-exclusive $440.00

  • Delta Air Lines DL533 / DL1872: SEA 2026-11-13 13:35:00 → BUF 2026-11-13 23:58:00; 1 stop(s) via DTW; 443 minutes. Local airport times.
    • DL533: SEA 2026-11-13 13:35:00 → DTW 2026-11-13 20:48:00; layover at DTW: 122 minutes.
    • DL1872: DTW 2026-11-13 22:50:00 → BUF 2026-11-13 23:58:00.
  • Delta Air Lines DL1721 / DL734: BUF 2026-11-16 06:35:00 → SEA 2026-11-16 11:09:00; 1 stop(s) via DTW; 454 minutes. Local airport times.
    • DL1721: BUF 2026-11-16 06:35:00 → DTW 2026-11-16 07:52:00; layover at DTW: 63 minutes.
    • DL734: DTW 2026-11-16 08:55:00 → SEA 2026-11-16 11:09:00.

2026-11-17 · one way · Axel-exclusive $205.00

  • Southwest Airlines WN1550 / WN1417: SEA 2026-11-17 06:30:00 → BUF 2026-11-17 16:00:00; 1 stop(s) via MDW; 390 minutes. Local airport times.
    • WN1550: SEA 2026-11-17 06:30:00 → MDW 2026-11-17 12:25:00; layover at MDW: 60 minutes.
    • WN1417: MDW 2026-11-17 13:25:00 → BUF 2026-11-17 16:00:00.

2026-11-17 · one way · Axel-exclusive $220.00

  • United Airlines UA1538 / UA3529: SEA 2026-11-17 23:25:00 → BUF 2026-11-18 10:08:00; 1 stop(s) via EWR; 463 minutes. Local airport times.
    • UA1538: SEA 2026-11-17 23:25:00 → EWR 2026-11-18 07:26:00; layover at EWR: 74 minutes.
    • UA3529: EWR 2026-11-18 08:40:00 → BUF 2026-11-18 10:08:00.

2026-11-24 → 2026-11-29 · Axel-exclusive $533.26

  • Southwest Airlines WN1550 / WN1417: SEA 2026-11-24 06:30:00 → BUF 2026-11-24 16:00:00; 1 stop(s) via MDW; 390 minutes. Local airport times.
    • WN1550: SEA 2026-11-24 06:30:00 → MDW 2026-11-24 12:25:00; layover at MDW: 60 minutes.
    • WN1417: MDW 2026-11-24 13:25:00 → BUF 2026-11-24 16:00:00.
  • Southwest Airlines WN383 / WN3032: BUF 2026-11-29 18:55:00 → SEA 2026-11-29 23:35:00; 1 stop(s) via MDW; 460 minutes. Local airport times.
    • WN383: BUF 2026-11-29 18:55:00 → MDW 2026-11-29 19:45:00; layover at MDW: 60 minutes.
    • WN3032: MDW 2026-11-29 20:45:00 → SEA 2026-11-29 23:35:00.

2026-11-24 → 2026-11-29 · Axel-exclusive $556.88

  • Alaska Airlines AS328 / AA4969: SEA 2026-11-24 23:40:00 → BUF 2026-11-25 10:17:00; 1 stop(s) via ORD; 457 minutes. Local airport times.
    • AS328: SEA 2026-11-24 23:40:00 → ORD 2026-11-25 05:37:00; layover at ORD: 106 minutes.
    • AA4969: ORD 2026-11-25 07:23:00 → BUF 2026-11-25 10:17:00.
  • Southwest Airlines WN383 / WN3032: BUF 2026-11-29 18:55:00 → SEA 2026-11-29 23:35:00; 1 stop(s) via MDW; 460 minutes. Local airport times.
    • WN383: BUF 2026-11-29 18:55:00 → MDW 2026-11-29 19:45:00; layover at MDW: 60 minutes.
    • WN3032: MDW 2026-11-29 20:45:00 → SEA 2026-11-29 23:35:00.

2026-12-05 → 2026-12-12 · Axel-exclusive $395.00

  • Southwest Airlines WN4956 / WN988: SEA 2026-12-05 06:15:00 → BUF 2026-12-05 16:50:00; 1 stop(s) via DEN; 455 minutes. Local airport times.
    • WN4956: SEA 2026-12-05 06:15:00 → DEN 2026-12-05 09:45:00; layover at DEN: 125 minutes.
    • WN988: DEN 2026-12-05 11:50:00 → BUF 2026-12-05 16:50:00.
  • Southwest Airlines WN383 / WN3032: BUF 2026-12-12 18:55:00 → SEA 2026-12-12 23:35:00; 1 stop(s) via MDW; 460 minutes. Local airport times.
    • WN383: BUF 2026-12-12 18:55:00 → MDW 2026-12-12 19:45:00; layover at MDW: 60 minutes.
    • WN3032: MDW 2026-12-12 20:45:00 → SEA 2026-12-12 23:35:00.

2026-12-05 → 2026-12-12 · Axel-exclusive $415.00

  • American Airlines AA2379 / AA4969: SEA 2026-12-05 23:59:00 → BUF 2026-12-06 10:17:00; 1 stop(s) via ORD; 438 minutes. Local airport times.
    • AA2379: SEA 2026-12-05 23:59:00 → ORD 2026-12-06 05:55:00; layover at ORD: 88 minutes.
    • AA4969: ORD 2026-12-06 07:23:00 → BUF 2026-12-06 10:17:00.
  • United Airlines UA1727 / UA2302: BUF 2026-12-12 08:17:00 → SEA 2026-12-12 13:35:00; 1 stop(s) via DEN; 498 minutes. Local airport times.
    • UA1727: BUF 2026-12-12 08:17:00 → DEN 2026-12-12 10:03:00; layover at DEN: 87 minutes.
    • UA2302: DEN 2026-12-12 11:30:00 → SEA 2026-12-12 13:35:00.

2026-12-19 → 2026-12-26 · Axel-exclusive $553.00

  • Southwest Airlines WN1550 / WN1417: SEA 2026-12-19 06:30:00 → BUF 2026-12-19 16:00:00; 1 stop(s) via MDW; 390 minutes. Local airport times.
    • WN1550: SEA 2026-12-19 06:30:00 → MDW 2026-12-19 12:25:00; layover at MDW: 60 minutes.
    • WN1417: MDW 2026-12-19 13:25:00 → BUF 2026-12-19 16:00:00.
  • Southwest Airlines WN383 / WN3032: BUF 2026-12-26 18:55:00 → SEA 2026-12-26 23:35:00; 1 stop(s) via MDW; 460 minutes. Local airport times.
    • WN383: BUF 2026-12-26 18:55:00 → MDW 2026-12-26 19:45:00; layover at MDW: 60 minutes.
    • WN3032: MDW 2026-12-26 20:45:00 → SEA 2026-12-26 23:35:00.

2026-12-19 → 2026-12-26 · Axel-exclusive $581.00

  • American Airlines AA2379 / AA4969: SEA 2026-12-19 23:59:00 → BUF 2026-12-20 10:17:00; 1 stop(s) via ORD; 438 minutes. Local airport times.
    • AA2379: SEA 2026-12-19 23:59:00 → ORD 2026-12-20 05:55:00; layover at ORD: 88 minutes.
    • AA4969: ORD 2026-12-20 07:23:00 → BUF 2026-12-20 10:17:00.
  • United Airlines UA1727 / UA2302: BUF 2026-12-26 08:17:00 → SEA 2026-12-26 13:35:00; 1 stop(s) via DEN; 498 minutes. Local airport times.
    • UA1727: BUF 2026-12-26 08:17:00 → DEN 2026-12-26 10:03:00; layover at DEN: 87 minutes.
    • UA2302: DEN 2026-12-26 11:30:00 → SEA 2026-12-26 13:35:00.

2026-12-31 → 2027-01-03 · Axel-exclusive $539.18

  • Southwest Airlines WN1550 / WN1417: SEA 2026-12-31 06:30:00 → BUF 2026-12-31 16:00:00; 1 stop(s) via MDW; 390 minutes. Local airport times.
    • WN1550: SEA 2026-12-31 06:30:00 → MDW 2026-12-31 12:25:00; layover at MDW: 60 minutes.
    • WN1417: MDW 2026-12-31 13:25:00 → BUF 2026-12-31 16:00:00.
  • Southwest Airlines WN383 / WN3032: BUF 2027-01-03 18:55:00 → SEA 2027-01-03 23:35:00; 1 stop(s) via MDW; 460 minutes. Local airport times.
    • WN383: BUF 2027-01-03 18:55:00 → MDW 2027-01-03 19:45:00; layover at MDW: 60 minutes.
    • WN3032: MDW 2027-01-03 20:45:00 → SEA 2027-01-03 23:35:00.

2026-12-31 → 2027-01-03 · Axel-exclusive $566.30

  • American Airlines AA2379 / AA4969: SEA 2026-12-31 23:59:00 → BUF 2027-01-01 10:17:00; 1 stop(s) via ORD; 438 minutes. Local airport times.
    • AA2379: SEA 2026-12-31 23:59:00 → ORD 2027-01-01 05:55:00; layover at ORD: 88 minutes.
    • AA4969: ORD 2027-01-01 07:23:00 → BUF 2027-01-01 10:17:00.
  • United Airlines UA5288 / UA2099: BUF 2027-01-03 06:30:00 → SEA 2027-01-03 12:19:00; 1 stop(s) via ORD; 529 minutes. Local airport times.
    • UA5288: BUF 2027-01-03 06:30:00 → ORD 2027-01-03 07:44:00; layover at ORD: 101 minutes.
    • UA2099: ORD 2027-01-03 09:25:00 → SEA 2027-01-03 12:19:00.

2027-01-14 → 2027-01-17 · Axel-exclusive $399.00

  • United Airlines UA1538 / UA3529: SEA 2027-01-14 23:25:00 → BUF 2027-01-15 10:08:00; 1 stop(s) via EWR; 463 minutes. Local airport times.
    • UA1538: SEA 2027-01-14 23:25:00 → EWR 2027-01-15 07:26:00; layover at EWR: 74 minutes.
    • UA3529: EWR 2027-01-15 08:40:00 → BUF 2027-01-15 10:08:00.
  • United Airlines UA5288 / UA2099: BUF 2027-01-17 06:30:00 → SEA 2027-01-17 12:19:00; 1 stop(s) via ORD; 529 minutes. Local airport times.
    • UA5288: BUF 2027-01-17 06:30:00 → ORD 2027-01-17 07:44:00; layover at ORD: 101 minutes.
    • UA2099: ORD 2027-01-17 09:25:00 → SEA 2027-01-17 12:19:00.

2027-01-14 → 2027-01-17 · Axel-exclusive $403.75

  • Alaska Airlines AS328 / AA4969: SEA 2027-01-14 23:40:00 → BUF 2027-01-15 10:17:00; 1 stop(s) via ORD; 457 minutes. Local airport times.
    • AS328: SEA 2027-01-14 23:40:00 → ORD 2027-01-15 05:37:00; layover at ORD: 106 minutes.
    • AA4969: ORD 2027-01-15 07:23:00 → BUF 2027-01-15 10:17:00.
  • United Airlines UA5288 / UA2099: BUF 2027-01-17 06:30:00 → SEA 2027-01-17 12:19:00; 1 stop(s) via ORD; 529 minutes. Local airport times.
    • UA5288: BUF 2027-01-17 06:30:00 → ORD 2027-01-17 07:44:00; layover at ORD: 101 minutes.
    • UA2099: ORD 2027-01-17 09:25:00 → SEA 2027-01-17 12:19:00.

2027-01-28 → 2027-01-31 · Axel-exclusive $375.26

  • Southwest Airlines WN1550 / WN1417: SEA 2027-01-28 06:30:00 → BUF 2027-01-28 16:00:00; 1 stop(s) via MDW; 390 minutes. Local airport times.
    • WN1550: SEA 2027-01-28 06:30:00 → MDW 2027-01-28 12:25:00; layover at MDW: 60 minutes.
    • WN1417: MDW 2027-01-28 13:25:00 → BUF 2027-01-28 16:00:00.
  • Southwest Airlines WN383 / WN3032: BUF 2027-01-31 18:55:00 → SEA 2027-01-31 23:35:00; 1 stop(s) via MDW; 460 minutes. Local airport times.
    • WN383: BUF 2027-01-31 18:55:00 → MDW 2027-01-31 19:45:00; layover at MDW: 60 minutes.
    • WN3032: MDW 2027-01-31 20:45:00 → SEA 2027-01-31 23:35:00.

2027-01-28 → 2027-01-31 · Axel-exclusive $394.25

  • American Airlines AA2379 / AA4969: SEA 2027-01-28 23:59:00 → BUF 2027-01-29 10:17:00; 1 stop(s) via ORD; 438 minutes. Local airport times.
    • AA2379: SEA 2027-01-28 23:59:00 → ORD 2027-01-29 05:55:00; layover at ORD: 88 minutes.
    • AA4969: ORD 2027-01-29 07:23:00 → BUF 2027-01-29 10:17:00.
  • United Airlines UA5288 / UA2099: BUF 2027-01-31 06:30:00 → SEA 2027-01-31 12:19:00; 1 stop(s) via ORD; 529 minutes. Local airport times.
    • UA5288: BUF 2027-01-31 06:30:00 → ORD 2027-01-31 07:44:00; layover at ORD: 101 minutes.
    • UA2099: ORD 2027-01-31 09:25:00 → SEA 2027-01-31 12:19:00.

2027-03-19 → 2027-03-22 · Axel-exclusive $395.00

  • Southwest Airlines WN1550 / WN1417: SEA 2027-03-19 06:30:00 → BUF 2027-03-19 16:00:00; 1 stop(s) via MDW; 390 minutes. Local airport times.
    • WN1550: SEA 2027-03-19 06:30:00 → MDW 2027-03-19 12:25:00; layover at MDW: 60 minutes.
    • WN1417: MDW 2027-03-19 13:25:00 → BUF 2027-03-19 16:00:00.
  • Southwest Airlines WN383 / WN3032: BUF 2027-03-22 18:55:00 → SEA 2027-03-22 23:35:00; 1 stop(s) via MDW; 460 minutes. Local airport times.
    • WN383: BUF 2027-03-22 18:55:00 → MDW 2027-03-22 19:45:00; layover at MDW: 60 minutes.
    • WN3032: MDW 2027-03-22 20:45:00 → SEA 2027-03-22 23:35:00.

2027-03-19 → 2027-03-22 · Axel-exclusive $415.00

  • American Airlines AA2379 / AA4969: SEA 2027-03-19 23:59:00 → BUF 2027-03-20 10:17:00; 1 stop(s) via ORD; 438 minutes. Local airport times.
    • AA2379: SEA 2027-03-19 23:59:00 → ORD 2027-03-20 05:55:00; layover at ORD: 88 minutes.
    • AA4969: ORD 2027-03-20 07:23:00 → BUF 2027-03-20 10:17:00.
  • United Airlines UA5288 / UA2099: BUF 2027-03-22 06:30:00 → SEA 2027-03-22 12:19:00; 1 stop(s) via ORD; 529 minutes. Local airport times.
    • UA5288: BUF 2027-03-22 06:30:00 → ORD 2027-03-22 07:44:00; layover at ORD: 101 minutes.
    • UA2099: ORD 2027-03-22 09:25:00 → SEA 2027-03-22 12:19:00.

2027-05-15 → 2027-05-22 · Axel-exclusive $505.00

  • Southwest Airlines WN1550 / WN1417: SEA 2027-05-15 06:30:00 → BUF 2027-05-15 16:00:00; 1 stop(s) via MDW; 390 minutes. Local airport times.
    • WN1550: SEA 2027-05-15 06:30:00 → MDW 2027-05-15 12:25:00; layover at MDW: 60 minutes.
    • WN1417: MDW 2027-05-15 13:25:00 → BUF 2027-05-15 16:00:00.
  • Southwest Airlines WN383 / WN3032: BUF 2027-05-22 18:55:00 → SEA 2027-05-22 23:35:00; 1 stop(s) via MDW; 460 minutes. Local airport times.
    • WN383: BUF 2027-05-22 18:55:00 → MDW 2027-05-22 19:45:00; layover at MDW: 60 minutes.
    • WN3032: MDW 2027-05-22 20:45:00 → SEA 2027-05-22 23:35:00.

2027-05-15 → 2027-05-22 · Axel-exclusive $525.00

  • American Airlines AA2379 / AA4969: SEA 2027-05-15 23:59:00 → BUF 2027-05-16 10:17:00; 1 stop(s) via ORD; 438 minutes. Local airport times.
    • AA2379: SEA 2027-05-15 23:59:00 → ORD 2027-05-16 05:55:00; layover at ORD: 88 minutes.
    • AA4969: ORD 2027-05-16 07:23:00 → BUF 2027-05-16 10:17:00.
  • United Airlines UA1727 / UA2302: BUF 2027-05-22 08:17:00 → SEA 2027-05-22 13:35:00; 1 stop(s) via DEN; 498 minutes. Local airport times.
    • UA1727: BUF 2027-05-22 08:17:00 → DEN 2027-05-22 10:03:00; layover at DEN: 87 minutes.
    • UA2302: DEN 2027-05-22 11:30:00 → SEA 2027-05-22 13:35:00.

2027-07-10 → 2027-07-17 · Axel-exclusive $505.00

  • Southwest Airlines WN1550 / WN1417: SEA 2027-07-10 06:30:00 → BUF 2027-07-10 16:00:00; 1 stop(s) via MDW; 390 minutes. Local airport times.
    • WN1550: SEA 2027-07-10 06:30:00 → MDW 2027-07-10 12:25:00; layover at MDW: 60 minutes.
    • WN1417: MDW 2027-07-10 13:25:00 → BUF 2027-07-10 16:00:00.
  • Southwest Airlines WN383 / WN3032: BUF 2027-07-17 18:55:00 → SEA 2027-07-17 23:35:00; 1 stop(s) via MDW; 460 minutes. Local airport times.
    • WN383: BUF 2027-07-17 18:55:00 → MDW 2027-07-17 19:45:00; layover at MDW: 60 minutes.
    • WN3032: MDW 2027-07-17 20:45:00 → SEA 2027-07-17 23:35:00.

2027-07-10 → 2027-07-17 · Axel-exclusive $525.00

  • American Airlines AA2379 / AA4969: SEA 2027-07-10 23:59:00 → BUF 2027-07-11 10:17:00; 1 stop(s) via ORD; 438 minutes. Local airport times.
    • AA2379: SEA 2027-07-10 23:59:00 → ORD 2027-07-11 05:55:00; layover at ORD: 88 minutes.
    • AA4969: ORD 2027-07-11 07:23:00 → BUF 2027-07-11 10:17:00.
  • United Airlines UA1727 / UA2302: BUF 2027-07-17 08:17:00 → SEA 2027-07-17 13:35:00; 1 stop(s) via DEN; 498 minutes. Local airport times.
    • UA1727: BUF 2027-07-17 08:17:00 → DEN 2027-07-17 10:03:00; layover at DEN: 87 minutes.
    • UA2302: DEN 2027-07-17 11:30:00 → SEA 2027-07-17 13:35:00.

2027-09-25 → 2027-10-02 · Axel-exclusive $492.38

  • Southwest Airlines WN1550 / WN1417: SEA 2027-09-25 06:30:00 → BUF 2027-09-25 16:00:00; 1 stop(s) via MDW; 390 minutes. Local airport times.
    • WN1550: SEA 2027-09-25 06:30:00 → MDW 2027-09-25 12:25:00; layover at MDW: 60 minutes.
    • WN1417: MDW 2027-09-25 13:25:00 → BUF 2027-09-25 16:00:00.
  • Southwest Airlines WN383 / WN3032: BUF 2027-10-02 18:55:00 → SEA 2027-10-02 23:35:00; 1 stop(s) via MDW; 460 minutes. Local airport times.
    • WN383: BUF 2027-10-02 18:55:00 → MDW 2027-10-02 19:45:00; layover at MDW: 60 minutes.
    • WN3032: MDW 2027-10-02 20:45:00 → SEA 2027-10-02 23:35:00.

2027-09-25 → 2027-10-02 · Axel-exclusive $512.00

  • American Airlines AA2379 / AA4969: SEA 2027-09-25 23:59:00 → BUF 2027-09-26 10:17:00; 1 stop(s) via ORD; 438 minutes. Local airport times.
    • AA2379: SEA 2027-09-25 23:59:00 → ORD 2027-09-26 05:55:00; layover at ORD: 88 minutes.
    • AA4969: ORD 2027-09-26 07:23:00 → BUF 2027-09-26 10:17:00.
  • United Airlines UA1727 / UA2302: BUF 2027-10-02 08:17:00 → SEA 2027-10-02 13:35:00; 1 stop(s) via DEN; 498 minutes. Local airport times.
    • UA1727: BUF 2027-10-02 08:17:00 → DEN 2027-10-02 10:03:00; layover at DEN: 87 minutes.
    • UA2302: DEN 2027-10-02 11:30:00 → SEA 2027-10-02 13:35:00.

More dates for this route

For AI assistants

  • This page: Seattle (SEA) to Buffalo (BUF): 144 priced flights on 72 exact dates the months ahead, 1 adult in economy. In the dated tables a price link opens AI flight search for that row's exact dates and travelers; in the observed-flight lists the price is the customer link for the traveler, beside a “See flights for these dates” link for your own check.
  • Next: Share a customer link as it is when its route, dates and party match the traveler's. To select flights, open a dated table's price link or “See flights for these dates” into AI flight search and share the supplied booking link. Search links are for you; share customer and booking links. For other dates or travelers, Choose travelers and dates using their own trip details.
  • Follow supplied links. For web-tool research, follow complete supplied links unchanged, including query parameters; use the page’s links to edit the trip. Constructed URLs may be rejected before reaching Axel. A completed fresh trip opens flight results first. Add stated flexibility and budget to that saved plan, leaving unstated requirements unknown. Edits create a new snapshot; use its results and review links.
  • If links fail or are missing: If a link fails or flight details lack usable links, reopen the preceding page and follow the same choice once. Keep refreshed links unchanged and preserve the trip and selections. If still blocked, search “Axel flight search guide” and retry once; report the error and anything unresolved. Recovery: Axel Seattle to Buffalo (BUF) flight deals · Flight search guide.
  • Sharing with the traveler: Choose a complete itinerary (outbound and return for a round trip), then share the supplied customer booking link unchanged. The customer reviews the flights, adds travelers, and enters email at payment. Do not collect email in chat. Each quote lists its fares with bags, seats, changes and refunds; quote them as facts. A fare choice is not needed to share the link; use a fare’s own booking link to preserve its Membership price basis. Ask only for essential missing trip details. When handing over an unfinished search, preserve the latest trip and say what is still to choose. If no supplied link matches the latest trip, construct https://helloaxel.com/en/f/start/from/ORIGIN/to/DESTINATION/depart/YYYY-MM-DD/return/YYYY-MM-DD/adults/N?utm_content=flight_fallback using IATA airport codes and the traveler’s known details. Omit unknowns; for one way replace /return/YYYY-MM-DD with /trip/oneway. Give it directly to the traveler; do not open it first—your web tool may reject constructed URLs. Complete links open Flight Guide and start searching. Preferences and advanced options.