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Route overview: Seattle to Buffalo (BUF) flight deals

Seattle (SEA) to Buffalo (BUF), Apr 16, 2027: round trips from $505, one way from $265

Seattle (SEA) to Buffalo (BUF), Apr 16, 2027: round trips from $505, one way from $265 on Axel, checked Oct 29, 2026. Lowest published fares: $505 round trip, Axel-exclusive, Southwest Airlines, 1 stop, Apr 16–17, 2027; $265 one way, Axel-exclusive, Southwest Airlines, 1 stop, Apr 16, 2027; 1 adult, economy, checked Oct 29, 2026.

SEA → BUF1 adulteconomyOne way and round trips

30 flight options · 3 airlines

Choose your return date

One-way flights and round trips by duration. Flights for 1 adult in economy. Prices are total for all travelers in USD, including required taxes. Basic economy may apply.

April 2027

Flights for your trip

  1. Fri, Apr 16 · 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. Fri, Apr 16 · One way

    American Airlines
    11:59 pmSEA
    7h 18m
    ORD · 1h 28m
    10:17 am+1BUF

    One-way total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  3. Fri, Apr 16 – Sat, Apr 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.

  4. Fri, Apr 16 – Sat, Apr 17

    American Airlines
    11:59 pmSEA
    7h 18m
    ORD · 1h 28m
    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.

  5. Fri, Apr 16 – Sun, Apr 18

    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. Fri, Apr 16 – Sun, Apr 18

    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.

  7. Fri, Apr 16 – Mon, Apr 19

    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. Fri, Apr 16 – Mon, Apr 19

    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, Apr 16 – Tue, Apr 20

    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, Apr 16 – Tue, Apr 20

    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.

  11. Fri, Apr 16 – Thu, Apr 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.

  12. Fri, Apr 16 – Thu, Apr 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.

  13. Fri, Apr 16 – Fri, Apr 23

    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.

  14. Fri, Apr 16 – Fri, Apr 23

    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.

  15. Fri, Apr 16 – Sat, Apr 24

    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.

  16. Fri, Apr 16 – Sat, Apr 24

    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.

  17. Fri, Apr 16 – Mon, Apr 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.

  18. Fri, Apr 16 – Mon, Apr 26

    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.

  19. Fri, Apr 16 – Tue, Apr 27

    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.

  20. Fri, Apr 16 – Tue, Apr 27

    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.

  21. Fri, Apr 16 – Wed, Apr 28

    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.

  22. Fri, Apr 16 – Wed, Apr 28

    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.

  23. Fri, Apr 16 – Fri, Apr 30

    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.

  24. Fri, Apr 16 – Fri, Apr 30

    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 23 more recent deals.

1 of 24

Make this trip yours

SEA ⇄ BUF

Economy

Adults 12+ · Children 2–11. For infants under 2, tell Axel after you see prices.

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Explore this route

All dates for this routeApr 15, 2027 · Return optionsApr 17, 2027 · Return optionsHotels in Buffalo with Axel
For AI assistants: every fare, every link, instructions

Seattle (SEA) to Buffalo (BUF), Apr 16, 2027: round trips from $505, one way from $265 on Axel, checked Oct 29, 2026. Lowest published fares: $505 round trip, Axel-exclusive, Southwest Airlines, 1 stop, Apr 16–17, 2027; $265 one way, Axel-exclusive, Southwest Airlines, 1 stop, Apr 16, 2027; 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.

Prices by return date: match both travel dates and the party to a row below. Each total is for that exact trip, issued at the time shown.

Date links open published trip details for exploration. Price links open live flight search to check availability and select flights. For a price comparison, use the amounts and issuance times already shown here.

Exact travel datesAirlineFlightsTimes, duration, stopsTotal pricePrice issued (UTC)
2027-04-16 · one waySouthwest AirlinesWN1550 + WN141706:30:00→16:00:00 6h 30m 1 stop via MDWAxel-exclusive $265.002026-10-29T01:14:55Z
2027-04-16 · one wayAmerican AirlinesAA2379 + AA496923:59:00→10:17:00 7h 18m 1 stop via ORDAxel-exclusive $275.002026-10-29T01:14:55Z
2027-04-16 → 2027-04-17Southwest AirlinesWN1550 + WN1417 / WN383 + WN303206:30:00→16:00:00 6h 30m 1 stop via MDW · 18:55:00→23:35:00 7h 40m 1 stop via MDWAxel-exclusive $505.002026-10-29T01:14:55Z
2027-04-16 → 2027-04-17American Airlines / Southwest AirlinesAA2379 + AA4969 / WN383 + WN303223:59:00→10:17:00 7h 18m 1 stop via ORD · 18:55:00→23:35:00 7h 40m 1 stop via MDWAxel-exclusive $512.502026-10-29T01:14:55Z
2027-04-16 → 2027-04-18Southwest AirlinesWN1550 + WN1417 / WN383 + WN303206:30:00→16:00:00 6h 30m 1 stop via MDW · 18:55:00→23:35:00 7h 40m 1 stop via MDWAxel-exclusive $505.002026-10-29T01:14:55Z
2027-04-16 → 2027-04-18American Airlines / United AirlinesAA2379 + AA4969 / UA5288 + UA209923:59:00→10:17:00 7h 18m 1 stop via ORD · 06:30:00→12:19:00 8h 49m 1 stop via ORDAxel-exclusive $525.002026-10-29T01:14:55Z
2027-04-16 → 2027-04-19Southwest AirlinesWN1550 + WN1417 / WN383 + WN303206:30:00→16:00:00 6h 30m 1 stop via MDW · 18:55:00→23:35:00 7h 40m 1 stop via MDWAxel-exclusive $505.002026-10-29T01:14:55Z
2027-04-16 → 2027-04-19American Airlines / United AirlinesAA2379 + AA4969 / UA5288 + UA209923:59:00→10:17:00 7h 18m 1 stop via ORD · 06:30:00→12:19:00 8h 49m 1 stop via ORDAxel-exclusive $525.002026-10-29T01:14:55Z
2027-04-16 → 2027-04-20Southwest AirlinesWN1550 + WN1417 / WN383 + WN303206:30:00→16:00:00 6h 30m 1 stop via MDW · 18:55:00→23:35:00 7h 40m 1 stop via MDWAxel-exclusive $505.002026-10-29T01:14:55Z
2027-04-16 → 2027-04-20American Airlines / United AirlinesAA2379 + AA4969 / UA5288 + UA209923:59:00→10:17:00 7h 18m 1 stop via ORD · 06:30:00→12:19:00 8h 49m 1 stop via ORDAxel-exclusive $525.002026-10-29T01:14:55Z
2027-04-16 → 2027-04-21Southwest AirlinesWN1550 + WN1417 / WN383 + WN303206:30:00→16:00:00 6h 30m 1 stop via MDW · 18:55:00→23:35:00 7h 40m 1 stop via MDWAxel-exclusive $505.002026-10-29T01:14:55Z
2027-04-16 → 2027-04-21United AirlinesUA1538 + UA3529 / UA5288 + UA209923:25:00→10:08:00 7h 43m 1 stop via EWR · 06:30:00→12:19:00 8h 49m 1 stop via ORDAxel-exclusive $530.002026-10-29T01:14:55Z
2027-04-16 → 2027-04-22Southwest AirlinesWN1550 + WN1417 / WN383 + WN303206:30:00→16:00:00 6h 30m 1 stop via MDW · 18:55:00→23:35:00 7h 40m 1 stop via MDWAxel-exclusive $505.002026-10-29T01:14:55Z
2027-04-16 → 2027-04-22American Airlines / United AirlinesAA2379 + AA4969 / UA5288 + UA209923:59:00→10:17:00 7h 18m 1 stop via ORD · 06:30:00→12:19:00 8h 49m 1 stop via ORDAxel-exclusive $525.002026-10-29T01:14:55Z
2027-04-16 → 2027-04-23Southwest AirlinesWN1550 + WN1417 / WN383 + WN303206:30:00→16:00:00 6h 30m 1 stop via MDW · 18:55:00→23:35:00 7h 40m 1 stop via MDWAxel-exclusive $505.002026-10-29T01:14:55Z
2027-04-16 → 2027-04-23American Airlines / United AirlinesAA2379 + AA4969 / UA5288 + UA209923:59:00→10:17:00 7h 18m 1 stop via ORD · 06:30:00→12:19:00 8h 49m 1 stop via ORDAxel-exclusive $525.002026-10-29T01:14:55Z
2027-04-16 → 2027-04-24Southwest AirlinesWN1550 + WN1417 / WN383 + WN303206:30:00→16:00:00 6h 30m 1 stop via MDW · 18:55:00→23:35:00 7h 40m 1 stop via MDWAxel-exclusive $505.002026-10-29T01:14:55Z
2027-04-16 → 2027-04-24American Airlines / United AirlinesAA2379 + AA4969 / UA1727 + UA230223:59:00→10:17:00 7h 18m 1 stop via ORD · 08:17:00→13:35:00 8h 18m 1 stop via DENAxel-exclusive $525.002026-10-29T01:14:55Z
2027-04-16 → 2027-04-25Southwest AirlinesWN1550 + WN1417 / WN383 + WN303206:30:00→16:00:00 6h 30m 1 stop via MDW · 18:55:00→23:35:00 7h 40m 1 stop via MDWAxel-exclusive $505.002026-10-29T01:14:55Z
2027-04-16 → 2027-04-25American Airlines / United AirlinesAA2379 + AA4969 / UA5288 + UA209923:59:00→10:17:00 7h 18m 1 stop via ORD · 06:30:00→12:19:00 8h 49m 1 stop via ORDAxel-exclusive $525.002026-10-29T01:14:55Z
2027-04-16 → 2027-04-26Southwest AirlinesWN1550 + WN1417 / WN383 + WN303206:30:00→16:00:00 6h 30m 1 stop via MDW · 18:55:00→23:35:00 7h 40m 1 stop via MDWAxel-exclusive $505.002026-10-29T01:14:55Z
2027-04-16 → 2027-04-26American Airlines / United AirlinesAA2379 + AA4969 / UA5288 + UA209923:59:00→10:17:00 7h 18m 1 stop via ORD · 06:30:00→12:19:00 8h 49m 1 stop via ORDAxel-exclusive $525.002026-10-29T01:14:55Z
2027-04-16 → 2027-04-27Southwest AirlinesWN1550 + WN1417 / WN383 + WN303206:30:00→16:00:00 6h 30m 1 stop via MDW · 18:55:00→23:35:00 7h 40m 1 stop via MDWAxel-exclusive $505.002026-10-29T01:14:55Z
2027-04-16 → 2027-04-27American Airlines / United AirlinesAA2379 + AA4969 / UA5288 + UA209923:59:00→10:17:00 7h 18m 1 stop via ORD · 06:30:00→12:19:00 8h 49m 1 stop via ORDAxel-exclusive $525.002026-10-29T01:14:55Z
2027-04-16 → 2027-04-28Southwest AirlinesWN1550 + WN1417 / WN383 + WN303206:30:00→16:00:00 6h 30m 1 stop via MDW · 18:55:00→23:35:00 7h 40m 1 stop via MDWAxel-exclusive $505.002026-10-29T01:14:55Z
2027-04-16 → 2027-04-28United AirlinesUA1538 + UA3529 / UA5288 + UA209923:25:00→10:08:00 7h 43m 1 stop via EWR · 06:30:00→12:19:00 8h 49m 1 stop via ORDAxel-exclusive $530.002026-10-29T01:14:55Z
2027-04-16 → 2027-04-29Southwest AirlinesWN1550 + WN1417 / WN383 + WN303206:30:00→16:00:00 6h 30m 1 stop via MDW · 18:55:00→23:35:00 7h 40m 1 stop via MDWAxel-exclusive $505.002026-10-29T01:14:55Z
2027-04-16 → 2027-04-29American Airlines / United AirlinesAA2379 + AA4969 / UA5288 + UA209923:59:00→10:17:00 7h 18m 1 stop via ORD · 06:30:00→12:19:00 8h 49m 1 stop via ORDAxel-exclusive $525.002026-10-29T01:14:55Z
2027-04-16 → 2027-04-30Southwest AirlinesWN1550 + WN1417 / WN383 + WN303206:30:00→16:00:00 6h 30m 1 stop via MDW · 18:55:00→23:35:00 7h 40m 1 stop via MDWAxel-exclusive $505.002026-10-29T01:14:55Z
2027-04-16 → 2027-04-30American Airlines / United AirlinesAA2379 + AA4969 / UA5288 + UA209923:59:00→10:17:00 7h 18m 1 stop via ORD · 06:30:00→12:19:00 8h 49m 1 stop via ORDAxel-exclusive $525.002026-10-29T01:14:55Z

Hotels in Buffalo for these trips

Hotels: under a trip, hotels in Buffalo for exactly those nights link to the hotel pages for 2 adults in 1 room. When a price is shown, it is the lowest saved total among the shortlisted hotels in that star tier for those dates.

All hotels in Buffalo

Route overview: Seattle to Buffalo (BUF) flight deals

2027-04-16 · one way · Axel-exclusive $265.00

  • Southwest Airlines WN1550 / WN1417: SEA 2027-04-16 06:30:00 → BUF 2027-04-16 16:00:00; 1 stop(s) via MDW; 390 minutes. Local airport times.
    • WN1550: SEA 2027-04-16 06:30:00 → MDW 2027-04-16 12:25:00; layover at MDW: 60 minutes.
    • WN1417: MDW 2027-04-16 13:25:00 → BUF 2027-04-16 16:00:00.

2027-04-16 · one way · Axel-exclusive $275.00

  • American Airlines AA2379 / AA4969: SEA 2027-04-16 23:59:00 → BUF 2027-04-17 10:17:00; 1 stop(s) via ORD; 438 minutes. Local airport times.
    • AA2379: SEA 2027-04-16 23:59:00 → ORD 2027-04-17 05:55:00; layover at ORD: 88 minutes.
    • AA4969: ORD 2027-04-17 07:23:00 → BUF 2027-04-17 10:17:00.

2027-04-16 → 2027-04-17 · Axel-exclusive $505.00

  • Southwest Airlines WN1550 / WN1417: SEA 2027-04-16 06:30:00 → BUF 2027-04-16 16:00:00; 1 stop(s) via MDW; 390 minutes. Local airport times.
    • WN1550: SEA 2027-04-16 06:30:00 → MDW 2027-04-16 12:25:00; layover at MDW: 60 minutes.
    • WN1417: MDW 2027-04-16 13:25:00 → BUF 2027-04-16 16:00:00.
  • Southwest Airlines WN383 / WN3032: BUF 2027-04-17 18:55:00 → SEA 2027-04-17 23:35:00; 1 stop(s) via MDW; 460 minutes. Local airport times.
    • WN383: BUF 2027-04-17 18:55:00 → MDW 2027-04-17 19:45:00; layover at MDW: 60 minutes.
    • WN3032: MDW 2027-04-17 20:45:00 → SEA 2027-04-17 23:35:00.

2027-04-16 → 2027-04-17 · Axel-exclusive $512.50

  • American Airlines AA2379 / AA4969: SEA 2027-04-16 23:59:00 → BUF 2027-04-17 10:17:00; 1 stop(s) via ORD; 438 minutes. Local airport times.
    • AA2379: SEA 2027-04-16 23:59:00 → ORD 2027-04-17 05:55:00; layover at ORD: 88 minutes.
    • AA4969: ORD 2027-04-17 07:23:00 → BUF 2027-04-17 10:17:00.
  • Southwest Airlines WN383 / WN3032: BUF 2027-04-17 18:55:00 → SEA 2027-04-17 23:35:00; 1 stop(s) via MDW; 460 minutes. Local airport times.
    • WN383: BUF 2027-04-17 18:55:00 → MDW 2027-04-17 19:45:00; layover at MDW: 60 minutes.
    • WN3032: MDW 2027-04-17 20:45:00 → SEA 2027-04-17 23:35:00.

2027-04-16 → 2027-04-18 · Axel-exclusive $505.00

  • Southwest Airlines WN1550 / WN1417: SEA 2027-04-16 06:30:00 → BUF 2027-04-16 16:00:00; 1 stop(s) via MDW; 390 minutes. Local airport times.
    • WN1550: SEA 2027-04-16 06:30:00 → MDW 2027-04-16 12:25:00; layover at MDW: 60 minutes.
    • WN1417: MDW 2027-04-16 13:25:00 → BUF 2027-04-16 16:00:00.
  • Southwest Airlines WN383 / WN3032: BUF 2027-04-18 18:55:00 → SEA 2027-04-18 23:35:00; 1 stop(s) via MDW; 460 minutes. Local airport times.
    • WN383: BUF 2027-04-18 18:55:00 → MDW 2027-04-18 19:45:00; layover at MDW: 60 minutes.
    • WN3032: MDW 2027-04-18 20:45:00 → SEA 2027-04-18 23:35:00.

2027-04-16 → 2027-04-18 · Axel-exclusive $525.00

  • American Airlines AA2379 / AA4969: SEA 2027-04-16 23:59:00 → BUF 2027-04-17 10:17:00; 1 stop(s) via ORD; 438 minutes. Local airport times.
    • AA2379: SEA 2027-04-16 23:59:00 → ORD 2027-04-17 05:55:00; layover at ORD: 88 minutes.
    • AA4969: ORD 2027-04-17 07:23:00 → BUF 2027-04-17 10:17:00.
  • United Airlines UA5288 / UA2099: BUF 2027-04-18 06:30:00 → SEA 2027-04-18 12:19:00; 1 stop(s) via ORD; 529 minutes. Local airport times.
    • UA5288: BUF 2027-04-18 06:30:00 → ORD 2027-04-18 07:44:00; layover at ORD: 101 minutes.
    • UA2099: ORD 2027-04-18 09:25:00 → SEA 2027-04-18 12:19:00.

2027-04-16 → 2027-04-19 · Axel-exclusive $505.00

  • Southwest Airlines WN1550 / WN1417: SEA 2027-04-16 06:30:00 → BUF 2027-04-16 16:00:00; 1 stop(s) via MDW; 390 minutes. Local airport times.
    • WN1550: SEA 2027-04-16 06:30:00 → MDW 2027-04-16 12:25:00; layover at MDW: 60 minutes.
    • WN1417: MDW 2027-04-16 13:25:00 → BUF 2027-04-16 16:00:00.
  • Southwest Airlines WN383 / WN3032: BUF 2027-04-19 18:55:00 → SEA 2027-04-19 23:35:00; 1 stop(s) via MDW; 460 minutes. Local airport times.
    • WN383: BUF 2027-04-19 18:55:00 → MDW 2027-04-19 19:45:00; layover at MDW: 60 minutes.
    • WN3032: MDW 2027-04-19 20:45:00 → SEA 2027-04-19 23:35:00.

2027-04-16 → 2027-04-19 · Axel-exclusive $525.00

  • American Airlines AA2379 / AA4969: SEA 2027-04-16 23:59:00 → BUF 2027-04-17 10:17:00; 1 stop(s) via ORD; 438 minutes. Local airport times.
    • AA2379: SEA 2027-04-16 23:59:00 → ORD 2027-04-17 05:55:00; layover at ORD: 88 minutes.
    • AA4969: ORD 2027-04-17 07:23:00 → BUF 2027-04-17 10:17:00.
  • United Airlines UA5288 / UA2099: BUF 2027-04-19 06:30:00 → SEA 2027-04-19 12:19:00; 1 stop(s) via ORD; 529 minutes. Local airport times.
    • UA5288: BUF 2027-04-19 06:30:00 → ORD 2027-04-19 07:44:00; layover at ORD: 101 minutes.
    • UA2099: ORD 2027-04-19 09:25:00 → SEA 2027-04-19 12:19:00.

2027-04-16 → 2027-04-20 · Axel-exclusive $505.00

  • Southwest Airlines WN1550 / WN1417: SEA 2027-04-16 06:30:00 → BUF 2027-04-16 16:00:00; 1 stop(s) via MDW; 390 minutes. Local airport times.
    • WN1550: SEA 2027-04-16 06:30:00 → MDW 2027-04-16 12:25:00; layover at MDW: 60 minutes.
    • WN1417: MDW 2027-04-16 13:25:00 → BUF 2027-04-16 16:00:00.
  • Southwest Airlines WN383 / WN3032: BUF 2027-04-20 18:55:00 → SEA 2027-04-20 23:35:00; 1 stop(s) via MDW; 460 minutes. Local airport times.
    • WN383: BUF 2027-04-20 18:55:00 → MDW 2027-04-20 19:45:00; layover at MDW: 60 minutes.
    • WN3032: MDW 2027-04-20 20:45:00 → SEA 2027-04-20 23:35:00.

2027-04-16 → 2027-04-20 · Axel-exclusive $525.00

  • American Airlines AA2379 / AA4969: SEA 2027-04-16 23:59:00 → BUF 2027-04-17 10:17:00; 1 stop(s) via ORD; 438 minutes. Local airport times.
    • AA2379: SEA 2027-04-16 23:59:00 → ORD 2027-04-17 05:55:00; layover at ORD: 88 minutes.
    • AA4969: ORD 2027-04-17 07:23:00 → BUF 2027-04-17 10:17:00.
  • United Airlines UA5288 / UA2099: BUF 2027-04-20 06:30:00 → SEA 2027-04-20 12:19:00; 1 stop(s) via ORD; 529 minutes. Local airport times.
    • UA5288: BUF 2027-04-20 06:30:00 → ORD 2027-04-20 07:44:00; layover at ORD: 101 minutes.
    • UA2099: ORD 2027-04-20 09:25:00 → SEA 2027-04-20 12:19:00.

2027-04-16 → 2027-04-22 · Axel-exclusive $505.00

  • Southwest Airlines WN1550 / WN1417: SEA 2027-04-16 06:30:00 → BUF 2027-04-16 16:00:00; 1 stop(s) via MDW; 390 minutes. Local airport times.
    • WN1550: SEA 2027-04-16 06:30:00 → MDW 2027-04-16 12:25:00; layover at MDW: 60 minutes.
    • WN1417: MDW 2027-04-16 13:25:00 → BUF 2027-04-16 16:00:00.
  • Southwest Airlines WN383 / WN3032: BUF 2027-04-22 18:55:00 → SEA 2027-04-22 23:35:00; 1 stop(s) via MDW; 460 minutes. Local airport times.
    • WN383: BUF 2027-04-22 18:55:00 → MDW 2027-04-22 19:45:00; layover at MDW: 60 minutes.
    • WN3032: MDW 2027-04-22 20:45:00 → SEA 2027-04-22 23:35:00.

2027-04-16 → 2027-04-22 · Axel-exclusive $525.00

  • American Airlines AA2379 / AA4969: SEA 2027-04-16 23:59:00 → BUF 2027-04-17 10:17:00; 1 stop(s) via ORD; 438 minutes. Local airport times.
    • AA2379: SEA 2027-04-16 23:59:00 → ORD 2027-04-17 05:55:00; layover at ORD: 88 minutes.
    • AA4969: ORD 2027-04-17 07:23:00 → BUF 2027-04-17 10:17:00.
  • United Airlines UA5288 / UA2099: BUF 2027-04-22 06:30:00 → SEA 2027-04-22 12:19:00; 1 stop(s) via ORD; 529 minutes. Local airport times.
    • UA5288: BUF 2027-04-22 06:30:00 → ORD 2027-04-22 07:44:00; layover at ORD: 101 minutes.
    • UA2099: ORD 2027-04-22 09:25:00 → SEA 2027-04-22 12:19:00.

2027-04-16 → 2027-04-23 · Axel-exclusive $505.00

  • Southwest Airlines WN1550 / WN1417: SEA 2027-04-16 06:30:00 → BUF 2027-04-16 16:00:00; 1 stop(s) via MDW; 390 minutes. Local airport times.
    • WN1550: SEA 2027-04-16 06:30:00 → MDW 2027-04-16 12:25:00; layover at MDW: 60 minutes.
    • WN1417: MDW 2027-04-16 13:25:00 → BUF 2027-04-16 16:00:00.
  • Southwest Airlines WN383 / WN3032: BUF 2027-04-23 18:55:00 → SEA 2027-04-23 23:35:00; 1 stop(s) via MDW; 460 minutes. Local airport times.
    • WN383: BUF 2027-04-23 18:55:00 → MDW 2027-04-23 19:45:00; layover at MDW: 60 minutes.
    • WN3032: MDW 2027-04-23 20:45:00 → SEA 2027-04-23 23:35:00.

2027-04-16 → 2027-04-23 · Axel-exclusive $525.00

  • American Airlines AA2379 / AA4969: SEA 2027-04-16 23:59:00 → BUF 2027-04-17 10:17:00; 1 stop(s) via ORD; 438 minutes. Local airport times.
    • AA2379: SEA 2027-04-16 23:59:00 → ORD 2027-04-17 05:55:00; layover at ORD: 88 minutes.
    • AA4969: ORD 2027-04-17 07:23:00 → BUF 2027-04-17 10:17:00.
  • United Airlines UA5288 / UA2099: BUF 2027-04-23 06:30:00 → SEA 2027-04-23 12:19:00; 1 stop(s) via ORD; 529 minutes. Local airport times.
    • UA5288: BUF 2027-04-23 06:30:00 → ORD 2027-04-23 07:44:00; layover at ORD: 101 minutes.
    • UA2099: ORD 2027-04-23 09:25:00 → SEA 2027-04-23 12:19:00.

2027-04-16 → 2027-04-24 · Axel-exclusive $505.00

  • Southwest Airlines WN1550 / WN1417: SEA 2027-04-16 06:30:00 → BUF 2027-04-16 16:00:00; 1 stop(s) via MDW; 390 minutes. Local airport times.
    • WN1550: SEA 2027-04-16 06:30:00 → MDW 2027-04-16 12:25:00; layover at MDW: 60 minutes.
    • WN1417: MDW 2027-04-16 13:25:00 → BUF 2027-04-16 16:00:00.
  • Southwest Airlines WN383 / WN3032: BUF 2027-04-24 18:55:00 → SEA 2027-04-24 23:35:00; 1 stop(s) via MDW; 460 minutes. Local airport times.
    • WN383: BUF 2027-04-24 18:55:00 → MDW 2027-04-24 19:45:00; layover at MDW: 60 minutes.
    • WN3032: MDW 2027-04-24 20:45:00 → SEA 2027-04-24 23:35:00.

2027-04-16 → 2027-04-24 · Axel-exclusive $525.00

  • American Airlines AA2379 / AA4969: SEA 2027-04-16 23:59:00 → BUF 2027-04-17 10:17:00; 1 stop(s) via ORD; 438 minutes. Local airport times.
    • AA2379: SEA 2027-04-16 23:59:00 → ORD 2027-04-17 05:55:00; layover at ORD: 88 minutes.
    • AA4969: ORD 2027-04-17 07:23:00 → BUF 2027-04-17 10:17:00.
  • United Airlines UA1727 / UA2302: BUF 2027-04-24 08:17:00 → SEA 2027-04-24 13:35:00; 1 stop(s) via DEN; 498 minutes. Local airport times.
    • UA1727: BUF 2027-04-24 08:17:00 → DEN 2027-04-24 10:03:00; layover at DEN: 87 minutes.
    • UA2302: DEN 2027-04-24 11:30:00 → SEA 2027-04-24 13:35:00.

2027-04-16 → 2027-04-26 · Axel-exclusive $505.00

  • Southwest Airlines WN1550 / WN1417: SEA 2027-04-16 06:30:00 → BUF 2027-04-16 16:00:00; 1 stop(s) via MDW; 390 minutes. Local airport times.
    • WN1550: SEA 2027-04-16 06:30:00 → MDW 2027-04-16 12:25:00; layover at MDW: 60 minutes.
    • WN1417: MDW 2027-04-16 13:25:00 → BUF 2027-04-16 16:00:00.
  • Southwest Airlines WN383 / WN3032: BUF 2027-04-26 18:55:00 → SEA 2027-04-26 23:35:00; 1 stop(s) via MDW; 460 minutes. Local airport times.
    • WN383: BUF 2027-04-26 18:55:00 → MDW 2027-04-26 19:45:00; layover at MDW: 60 minutes.
    • WN3032: MDW 2027-04-26 20:45:00 → SEA 2027-04-26 23:35:00.

2027-04-16 → 2027-04-26 · Axel-exclusive $525.00

  • American Airlines AA2379 / AA4969: SEA 2027-04-16 23:59:00 → BUF 2027-04-17 10:17:00; 1 stop(s) via ORD; 438 minutes. Local airport times.
    • AA2379: SEA 2027-04-16 23:59:00 → ORD 2027-04-17 05:55:00; layover at ORD: 88 minutes.
    • AA4969: ORD 2027-04-17 07:23:00 → BUF 2027-04-17 10:17:00.
  • United Airlines UA5288 / UA2099: BUF 2027-04-26 06:30:00 → SEA 2027-04-26 12:19:00; 1 stop(s) via ORD; 529 minutes. Local airport times.
    • UA5288: BUF 2027-04-26 06:30:00 → ORD 2027-04-26 07:44:00; layover at ORD: 101 minutes.
    • UA2099: ORD 2027-04-26 09:25:00 → SEA 2027-04-26 12:19:00.

2027-04-16 → 2027-04-27 · Axel-exclusive $505.00

  • Southwest Airlines WN1550 / WN1417: SEA 2027-04-16 06:30:00 → BUF 2027-04-16 16:00:00; 1 stop(s) via MDW; 390 minutes. Local airport times.
    • WN1550: SEA 2027-04-16 06:30:00 → MDW 2027-04-16 12:25:00; layover at MDW: 60 minutes.
    • WN1417: MDW 2027-04-16 13:25:00 → BUF 2027-04-16 16:00:00.
  • Southwest Airlines WN383 / WN3032: BUF 2027-04-27 18:55:00 → SEA 2027-04-27 23:35:00; 1 stop(s) via MDW; 460 minutes. Local airport times.
    • WN383: BUF 2027-04-27 18:55:00 → MDW 2027-04-27 19:45:00; layover at MDW: 60 minutes.
    • WN3032: MDW 2027-04-27 20:45:00 → SEA 2027-04-27 23:35:00.

2027-04-16 → 2027-04-27 · Axel-exclusive $525.00

  • American Airlines AA2379 / AA4969: SEA 2027-04-16 23:59:00 → BUF 2027-04-17 10:17:00; 1 stop(s) via ORD; 438 minutes. Local airport times.
    • AA2379: SEA 2027-04-16 23:59:00 → ORD 2027-04-17 05:55:00; layover at ORD: 88 minutes.
    • AA4969: ORD 2027-04-17 07:23:00 → BUF 2027-04-17 10:17:00.
  • United Airlines UA5288 / UA2099: BUF 2027-04-27 06:30:00 → SEA 2027-04-27 12:19:00; 1 stop(s) via ORD; 529 minutes. Local airport times.
    • UA5288: BUF 2027-04-27 06:30:00 → ORD 2027-04-27 07:44:00; layover at ORD: 101 minutes.
    • UA2099: ORD 2027-04-27 09:25:00 → SEA 2027-04-27 12:19:00.

2027-04-16 → 2027-04-28 · Axel-exclusive $505.00

  • Southwest Airlines WN1550 / WN1417: SEA 2027-04-16 06:30:00 → BUF 2027-04-16 16:00:00; 1 stop(s) via MDW; 390 minutes. Local airport times.
    • WN1550: SEA 2027-04-16 06:30:00 → MDW 2027-04-16 12:25:00; layover at MDW: 60 minutes.
    • WN1417: MDW 2027-04-16 13:25:00 → BUF 2027-04-16 16:00:00.
  • Southwest Airlines WN383 / WN3032: BUF 2027-04-28 18:55:00 → SEA 2027-04-28 23:35:00; 1 stop(s) via MDW; 460 minutes. Local airport times.
    • WN383: BUF 2027-04-28 18:55:00 → MDW 2027-04-28 19:45:00; layover at MDW: 60 minutes.
    • WN3032: MDW 2027-04-28 20:45:00 → SEA 2027-04-28 23:35:00.

2027-04-16 → 2027-04-28 · Axel-exclusive $530.00

  • United Airlines UA1538 / UA3529: SEA 2027-04-16 23:25:00 → BUF 2027-04-17 10:08:00; 1 stop(s) via EWR; 463 minutes. Local airport times.
    • UA1538: SEA 2027-04-16 23:25:00 → EWR 2027-04-17 07:26:00; layover at EWR: 74 minutes.
    • UA3529: EWR 2027-04-17 08:40:00 → BUF 2027-04-17 10:08:00.
  • United Airlines UA5288 / UA2099: BUF 2027-04-28 06:30:00 → SEA 2027-04-28 12:19:00; 1 stop(s) via ORD; 529 minutes. Local airport times.
    • UA5288: BUF 2027-04-28 06:30:00 → ORD 2027-04-28 07:44:00; layover at ORD: 101 minutes.
    • UA2099: ORD 2027-04-28 09:25:00 → SEA 2027-04-28 12:19:00.

2027-04-16 → 2027-04-30 · Axel-exclusive $505.00

  • Southwest Airlines WN1550 / WN1417: SEA 2027-04-16 06:30:00 → BUF 2027-04-16 16:00:00; 1 stop(s) via MDW; 390 minutes. Local airport times.
    • WN1550: SEA 2027-04-16 06:30:00 → MDW 2027-04-16 12:25:00; layover at MDW: 60 minutes.
    • WN1417: MDW 2027-04-16 13:25:00 → BUF 2027-04-16 16:00:00.
  • Southwest Airlines WN383 / WN3032: BUF 2027-04-30 18:55:00 → SEA 2027-04-30 23:35:00; 1 stop(s) via MDW; 460 minutes. Local airport times.
    • WN383: BUF 2027-04-30 18:55:00 → MDW 2027-04-30 19:45:00; layover at MDW: 60 minutes.
    • WN3032: MDW 2027-04-30 20:45:00 → SEA 2027-04-30 23:35:00.

2027-04-16 → 2027-04-30 · Axel-exclusive $525.00

  • American Airlines AA2379 / AA4969: SEA 2027-04-16 23:59:00 → BUF 2027-04-17 10:17:00; 1 stop(s) via ORD; 438 minutes. Local airport times.
    • AA2379: SEA 2027-04-16 23:59:00 → ORD 2027-04-17 05:55:00; layover at ORD: 88 minutes.
    • AA4969: ORD 2027-04-17 07:23:00 → BUF 2027-04-17 10:17:00.
  • United Airlines UA5288 / UA2099: BUF 2027-04-30 06:30:00 → SEA 2027-04-30 12:19:00; 1 stop(s) via ORD; 529 minutes. Local airport times.
    • UA5288: BUF 2027-04-30 06:30:00 → ORD 2027-04-30 07:44:00; layover at ORD: 101 minutes.
    • UA2099: ORD 2027-04-30 09:25:00 → SEA 2027-04-30 12:19:00.

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  • This page: Seattle (SEA) to Buffalo (BUF) · Apr 16, 2027 · choose your return date: 1 adult in economy, every priced fare with its flights, times and total, each with the time its price was issued. Under a trip, hotels in Buffalo for exactly those nights link to the hotel pages for 2 adults in 1 room. Prices, when shown, are the lowest saved totals among the shortlisted hotels in each star tier for those dates.
  • Next: each row is one exact trip for this departure (both dates with the year, the total and the time its price was issued); its exact-trip price link opens the live search for those dates and travelers, where the booking link and the current total are. Other durations or travelers are not priced here: Choose travelers and dates prices the requested trip.
  • 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.