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Route overview: Seattle to Boise (BOI) flight deals

Seattle → Boise

Choose your travel dates

SEA → BOI1 adulteconomy

144 flight options · 2 airlines

Flights for the months ahead

Short round trips

  1. Thu, Nov 19 – Sun, Nov 22

    Delta Air Lines
    7:50 pmSEA
    1h 36m
    Nonstop
    10:26 pmBOI
    Delta Air Lines
    8:55 amBOI
    2h 4m
    Nonstop
    9:59 amSEA

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  2. Thu, Nov 19 – Sun, Nov 22

    Southwest Airlines
    5:15 amSEA
    6h 10m
    SMF · 2h 55m
    12:25 pmBOI
    Southwest Airlines
    6:40 pmBOI
    4h 40m
    SMF · 1h 5m
    10:20 pmSEA

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  3. Fri, Dec 25 – Mon, Dec 28

    Alaska Airlines
    9:31 pmSEA
    1h 28m
    Nonstop
    11:59 pmBOI
    Alaska Airlines
    10:52 amBOI
    1h 38m
    Nonstop
    11:30 amSEA

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  4. Fri, Dec 25 – Mon, Dec 28

    Delta Air Lines
    2:44 pmSEA
    1h 31m
    Nonstop
    5:15 pmBOI
    Delta Air Lines
    11:53 amBOI
    1h 57m
    Nonstop
    12:50 pmSEA

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  5. Thu, Jan 7 – Sun, Jan 10

    Alaska Airlines
    11:51 amSEA
    1h 27m
    Nonstop
    2:18 pmBOI
    Alaska Airlines
    4:20 pmBOI
    1h 40m
    Nonstop
    5:00 pmSEA

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  6. Thu, Jan 7 – Sun, Jan 10

    Delta Air Lines
    4:47 pmSEA
    1h 30m
    Nonstop
    7:17 pmBOI
    Delta Air Lines
    11:53 amBOI
    1h 57m
    Nonstop
    12:50 pmSEA

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  7. Thu, Jan 21 – Sun, Jan 24

    Alaska Airlines
    11:51 amSEA
    1h 27m
    Nonstop
    2:18 pmBOI
    Alaska Airlines
    4:20 pmBOI
    1h 40m
    Nonstop
    5:00 pmSEA

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  8. Thu, Jan 21 – Sun, Jan 24

    Delta Air Lines
    10:35 amSEA
    1h 35m
    Nonstop
    1:10 pmBOI
    Delta Air Lines
    11:53 amBOI
    1h 57m
    Nonstop
    12:50 pmSEA

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  9. Thu, Feb 4 – Sun, Feb 7

    Alaska Airlines
    11:51 amSEA
    1h 27m
    Nonstop
    2:18 pmBOI
    Alaska Airlines
    4:20 pmBOI
    1h 40m
    Nonstop
    5:00 pmSEA

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  10. Thu, Feb 4 – Sun, Feb 7

    Southwest Airlines
    5:15 amSEA
    6h 10m
    SMF · 2h 55m
    12:25 pmBOI
    Southwest Airlines
    6:40 pmBOI
    4h 40m
    SMF · 1h 5m
    10:20 pmSEA

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  11. Fri, Mar 19 – Mon, Mar 22

    Alaska Airlines
    9:31 pmSEA
    1h 28m
    Nonstop
    11:59 pmBOI
    Alaska Airlines
    10:52 amBOI
    1h 38m
    Nonstop
    11:30 amSEA

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  12. Fri, Mar 19 – Mon, Mar 22

    Delta Air Lines
    10:35 amSEA
    1h 35m
    Nonstop
    1:10 pmBOI
    Delta Air Lines
    11:53 amBOI
    1h 57m
    Nonstop
    12:50 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

Longer round trips

  1. Sat, Nov 28 – Sat, Dec 5

    Alaska Airlines
    11:01 pmSEA
    1h 27m
    Nonstop
    1:28 am+1BOI
    Alaska Airlines
    6:00 pmBOI
    1h 50m
    Nonstop
    6:50 pmSEA

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  2. Sat, Nov 28 – Sat, Dec 5

    Delta Air Lines
    1:30 pmSEA
    1h 35m
    Nonstop
    4:05 pmBOI
    Delta Air Lines
    10:37 amBOI
    1h 59m
    Nonstop
    11:36 amSEA

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  3. Sat, Dec 12 – Sat, Dec 19

    Alaska Airlines
    11:51 amSEA
    1h 27m
    Nonstop
    2:18 pmBOI
    Alaska Airlines
    4:59 pmBOI
    1h 43m
    Nonstop
    5:42 pmSEA

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  4. Sat, Dec 12 – Sat, Dec 19

    Delta Air Lines
    4:05 pmSEA
    1h 33m
    Nonstop
    6:38 pmBOI
    Delta Air Lines
    2:10 pmBOI
    1h 50m
    Nonstop
    3:00 pmSEA

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  5. Sat, May 15 – Sat, May 22

    Alaska Airlines
    1:59 pmSEA
    1h 21m
    Nonstop
    4:20 pmBOI
    Alaska Airlines
    8:46 pmBOI
    1h 41m
    Nonstop
    9:27 pmSEA

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  6. Sat, May 15 – Sat, May 22

    Delta Air Lines
    10:35 amSEA
    1h 35m
    Nonstop
    1:10 pmBOI
    Delta Air Lines
    2:10 pmBOI
    1h 50m
    Nonstop
    3:00 pmSEA

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  7. Sat, Jul 10 – Sat, Jul 17

    Alaska Airlines
    1:59 pmSEA
    1h 21m
    Nonstop
    4:20 pmBOI
    Alaska Airlines
    8:46 pmBOI
    1h 41m
    Nonstop
    9:27 pmSEA

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  8. Sat, Jul 10 – Sat, Jul 17

    Delta Air Lines
    10:35 amSEA
    1h 35m
    Nonstop
    1:10 pmBOI
    Delta Air Lines
    2:10 pmBOI
    1h 50m
    Nonstop
    3:00 pmSEA

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  9. Sat, Sep 25 – Sat, Oct 2

    Alaska Airlines
    1:59 pmSEA
    1h 21m
    Nonstop
    4:20 pmBOI
    Alaska Airlines
    8:46 pmBOI
    1h 41m
    Nonstop
    9:27 pmSEA

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  10. Sat, Sep 25 – Sat, Oct 2

    Delta Air Lines
    10:35 amSEA
    1h 35m
    Nonstop
    1:10 pmBOI
    Delta Air Lines
    2:10 pmBOI
    1h 50m
    Nonstop
    3:00 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

One-way flights

  1. Tue, Nov 24 · One way

    Alaska Airlines
    3:40 pmSEA
    1h 23m
    Nonstop
    6:03 pmBOI

    One-way total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  2. Tue, Nov 24 · One way

    Delta Air Lines
    1:30 pmSEA
    1h 35m
    Nonstop
    4:05 pmBOI

    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 ⇄ BOI

Economy

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

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  • A real airline bookingThe booking is in the airline’s own system under your name. After you book, Alaska Airlines emails you its confirmation code and e-ticket, usually within 15 minutes and occasionally up to a couple of hours while the booking is processed.
  • Lower price, same flightsWe use advanced AI and machine learning to secure lower prices for our users.
  • 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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Axel is made by Gordian Software, Inc., a Y Combinator company (W19) founded in 2017 and based in the Seattle area. The company is led by CEO Stephen Grabowski, formerly of Skyscanner. How Axel works · About

More dates for this route

Nov 19, 2026 · Return optionsNov 27, 2026 · Return optionsDec 8, 2026 · Return optionsDec 19, 2026 · Return optionsDec 29, 2026 · Return optionsJan 8, 2027 · Return optionsJan 19, 2027 · Return optionsJan 30, 2027 · Return optionsFeb 19, 2027 · Return optionsMay 14, 2027 · Return optionsJul 9, 2027 · Return optionsSep 25, 2027 · Return optionsHotels in Boise with Axel
For AI assistants: every fare, every link, instructions

Lowest published fares for the months ahead: $218 round trip, Axel-exclusive, Alaska Airlines, nonstop, Nov 19–22, 2026; $119 one way, Axel-exclusive, Alaska Airlines, nonstop, Dec 1, 2026; 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 Boise (BOI): November 2026

Travel datesAirlineStopsTotal price
Nov 19, 2026 – Nov 22, 2026 · 3 nights · Compare return dates departing Nov 19, 2026Alaska AirlinesNonstopAxel-exclusive $218.00
Nov 19, 2026 – Nov 22, 2026 · 3 nights · Compare return dates departing Nov 19, 2026Delta Air LinesNonstopAxel-exclusive $228.00
Nov 20, 2026 – Nov 23, 2026 · 3 nights · Compare return dates departing Nov 20, 2026Alaska AirlinesNonstopAxel-exclusive $218.00
Nov 20, 2026 – Nov 23, 2026 · 3 nights · Compare return dates departing Nov 20, 2026Delta Air LinesNonstopAxel-exclusive $228.00
Nov 21, 2026 – Nov 28, 2026 · 7 nights · Compare return dates departing Nov 21, 2026Alaska AirlinesNonstopAxel-exclusive $256.15
Nov 21, 2026 – Nov 28, 2026 · 7 nights · Compare return dates departing Nov 21, 2026Delta Air LinesNonstopAxel-exclusive $267.90
Nov 24, 2026 · One way · Compare return dates departing Nov 24, 2026Alaska AirlinesNonstopAxel-exclusive $160.65
Nov 24, 2026 · One way · Compare return dates departing Nov 24, 2026Delta Air LinesNonstopAxel-exclusive $167.40
Nov 24, 2026 – Nov 29, 2026 · 5 nights · Compare return dates departing Nov 24, 2026Alaska AirlinesNonstopAxel-exclusive $294.30
Nov 24, 2026 – Nov 29, 2026 · 5 nights · Compare return dates departing Nov 24, 2026Delta Air LinesNonstopAxel-exclusive $307.80
Nov 26, 2026 – Nov 29, 2026 · 3 nights · Compare return dates departing Nov 26, 2026Alaska AirlinesNonstopAxel-exclusive $294.30
Nov 26, 2026 – Nov 29, 2026 · 3 nights · Compare return dates departing Nov 26, 2026Delta Air LinesNonstopAxel-exclusive $307.80
Nov 27, 2026 – Nov 30, 2026 · 3 nights · Compare return dates departing Nov 27, 2026Alaska AirlinesNonstopAxel-exclusive $294.30
Nov 27, 2026 – Nov 30, 2026 · 3 nights · Compare return dates departing Nov 27, 2026Delta Air LinesNonstopAxel-exclusive $307.80
Nov 28, 2026 – Dec 5, 2026 · 7 nights · Compare return dates departing Nov 28, 2026Alaska AirlinesNonstopAxel-exclusive $256.15
Nov 28, 2026 – Dec 5, 2026 · 7 nights · Compare return dates departing Nov 28, 2026Delta Air LinesNonstopAxel-exclusive $267.90

Seattle (SEA) to Boise (BOI): December 2026

Travel datesAirlineStopsTotal price
Dec 1, 2026 · One way · Compare return dates departing Dec 1, 2026Alaska AirlinesNonstopAxel-exclusive $119.00
Dec 1, 2026 · One way · Compare return dates departing Dec 1, 2026Delta Air LinesNonstopAxel-exclusive $124.00
Dec 3, 2026 – Dec 6, 2026 · 3 nights · Compare return dates departing Dec 3, 2026Alaska AirlinesNonstopAxel-exclusive $218.00
Dec 3, 2026 – Dec 6, 2026 · 3 nights · Compare return dates departing Dec 3, 2026Delta Air LinesNonstopAxel-exclusive $228.00
Dec 4, 2026 – Dec 7, 2026 · 3 nights · Compare return dates departing Dec 4, 2026Alaska AirlinesNonstopAxel-exclusive $218.00
Dec 4, 2026 – Dec 7, 2026 · 3 nights · Compare return dates departing Dec 4, 2026Delta Air LinesNonstopAxel-exclusive $228.00
Dec 5, 2026 – Dec 12, 2026 · 7 nights · Compare return dates departing Dec 5, 2026Alaska AirlinesNonstopAxel-exclusive $218.00
Dec 5, 2026 – Dec 12, 2026 · 7 nights · Compare return dates departing Dec 5, 2026Delta Air LinesNonstopAxel-exclusive $228.00
Dec 8, 2026 · One way · Compare return dates departing Dec 8, 2026Alaska AirlinesNonstopAxel-exclusive $119.00
Dec 8, 2026 · One way · Compare return dates departing Dec 8, 2026Delta Air LinesNonstopAxel-exclusive $124.00
Dec 10, 2026 – Dec 13, 2026 · 3 nights · Compare return dates departing Dec 10, 2026Alaska AirlinesNonstopAxel-exclusive $218.00
Dec 10, 2026 – Dec 13, 2026 · 3 nights · Compare return dates departing Dec 10, 2026Delta Air LinesNonstopAxel-exclusive $228.00
Dec 11, 2026 – Dec 14, 2026 · 3 nights · Compare return dates departing Dec 11, 2026Alaska AirlinesNonstopAxel-exclusive $218.00
Dec 11, 2026 – Dec 14, 2026 · 3 nights · Compare return dates departing Dec 11, 2026Delta Air LinesNonstopAxel-exclusive $228.00
Dec 12, 2026 – Dec 19, 2026 · 7 nights · Compare return dates departing Dec 12, 2026Alaska AirlinesNonstopAxel-exclusive $250.70
Dec 12, 2026 – Dec 19, 2026 · 7 nights · Compare return dates departing Dec 12, 2026Delta Air LinesNonstopAxel-exclusive $262.20
Dec 15, 2026 · One way · Compare return dates departing Dec 15, 2026Alaska AirlinesNonstopAxel-exclusive $119.00
Dec 15, 2026 · One way · Compare return dates departing Dec 15, 2026Delta Air LinesNonstopAxel-exclusive $124.00
Dec 17, 2026 – Dec 20, 2026 · 3 nights · Compare return dates departing Dec 17, 2026Alaska AirlinesNonstopAxel-exclusive $250.70
Dec 17, 2026 – Dec 20, 2026 · 3 nights · Compare return dates departing Dec 17, 2026Delta Air LinesNonstopAxel-exclusive $262.20
Dec 18, 2026 – Dec 21, 2026 · 3 nights · Compare return dates departing Dec 18, 2026Alaska AirlinesNonstopAxel-exclusive $250.70
Dec 18, 2026 – Dec 21, 2026 · 3 nights · Compare return dates departing Dec 18, 2026Delta Air LinesNonstopAxel-exclusive $262.20
Dec 19, 2026 – Dec 26, 2026 · 7 nights · Compare return dates departing Dec 19, 2026Alaska AirlinesNonstopAxel-exclusive $283.40
Dec 19, 2026 – Dec 26, 2026 · 7 nights · Compare return dates departing Dec 19, 2026Delta Air LinesNonstopAxel-exclusive $296.40
Dec 22, 2026 · One way · Compare return dates departing Dec 22, 2026Alaska AirlinesNonstopAxel-exclusive $154.70
Dec 22, 2026 · One way · Compare return dates departing Dec 22, 2026Delta Air LinesNonstopAxel-exclusive $161.20
Dec 22, 2026 – Dec 27, 2026 · 5 nights · Compare return dates departing Dec 22, 2026Alaska AirlinesNonstopAxel-exclusive $283.40
Dec 22, 2026 – Dec 27, 2026 · 5 nights · Compare return dates departing Dec 22, 2026Delta Air LinesNonstopAxel-exclusive $296.40
Dec 24, 2026 – Dec 27, 2026 · 3 nights · Compare return dates departing Dec 24, 2026Alaska AirlinesNonstopAxel-exclusive $283.40
Dec 24, 2026 – Dec 27, 2026 · 3 nights · Compare return dates departing Dec 24, 2026Delta Air LinesNonstopAxel-exclusive $296.40
Dec 25, 2026 – Dec 28, 2026 · 3 nights · Compare return dates departing Dec 25, 2026Alaska AirlinesNonstopAxel-exclusive $277.95
Dec 25, 2026 – Dec 28, 2026 · 3 nights · Compare return dates departing Dec 25, 2026Delta Air LinesNonstopAxel-exclusive $290.70
Dec 26, 2026 – Jan 2, 2027 · 7 nights · Compare return dates departing Dec 26, 2026Alaska AirlinesNonstopAxel-exclusive $277.95
Dec 26, 2026 – Jan 2, 2027 · 7 nights · Compare return dates departing Dec 26, 2026Delta Air LinesNonstopAxel-exclusive $290.70
Dec 29, 2026 · One way · Compare return dates departing Dec 29, 2026Alaska AirlinesNonstopAxel-exclusive $148.75
Dec 29, 2026 · One way · Compare return dates departing Dec 29, 2026Delta Air LinesNonstopAxel-exclusive $155.00
Dec 30, 2026 – Jan 2, 2027 · 3 nights · Compare return dates departing Dec 30, 2026Alaska AirlinesNonstopAxel-exclusive $272.50
Dec 30, 2026 – Jan 2, 2027 · 3 nights · Compare return dates departing Dec 30, 2026Delta Air LinesNonstopAxel-exclusive $285.00
Dec 31, 2026 – Jan 3, 2027 · 3 nights · Compare return dates departing Dec 31, 2026Alaska AirlinesNonstopAxel-exclusive $272.50
Dec 31, 2026 – Jan 3, 2027 · 3 nights · Compare return dates departing Dec 31, 2026Delta Air LinesNonstopAxel-exclusive $285.00

Seattle (SEA) to Boise (BOI): January 2027

Travel datesAirlineStopsTotal price
Jan 1, 2027 – Jan 4, 2027 · 3 nights · Compare return dates departing Jan 1, 2027Alaska AirlinesNonstopAxel-exclusive $245.25
Jan 1, 2027 – Jan 4, 2027 · 3 nights · Compare return dates departing Jan 1, 2027Delta Air LinesNonstopAxel-exclusive $256.50
Jan 2, 2027 – Jan 9, 2027 · 7 nights · Compare return dates departing Jan 2, 2027Alaska AirlinesNonstopAxel-exclusive $245.25
Jan 2, 2027 – Jan 9, 2027 · 7 nights · Compare return dates departing Jan 2, 2027Delta Air LinesNonstopAxel-exclusive $256.50
Jan 5, 2027 · One way · Compare return dates departing Jan 5, 2027Alaska AirlinesNonstopAxel-exclusive $119.00
Jan 5, 2027 · One way · Compare return dates departing Jan 5, 2027Delta Air LinesNonstopAxel-exclusive $124.00
Jan 7, 2027 – Jan 10, 2027 · 3 nights · Compare return dates departing Jan 7, 2027Alaska AirlinesNonstopAxel-exclusive $218.00
Jan 7, 2027 – Jan 10, 2027 · 3 nights · Compare return dates departing Jan 7, 2027Delta Air LinesNonstopAxel-exclusive $228.00
Jan 8, 2027 – Jan 11, 2027 · 3 nights · Compare return dates departing Jan 8, 2027Alaska AirlinesNonstopAxel-exclusive $218.00
Jan 8, 2027 – Jan 11, 2027 · 3 nights · Compare return dates departing Jan 8, 2027Delta Air LinesNonstopAxel-exclusive $228.00
Jan 9, 2027 – Jan 16, 2027 · 7 nights · Compare return dates departing Jan 9, 2027Alaska AirlinesNonstopAxel-exclusive $218.00
Jan 9, 2027 – Jan 16, 2027 · 7 nights · Compare return dates departing Jan 9, 2027Delta Air LinesNonstopAxel-exclusive $228.00
Jan 12, 2027 · One way · Compare return dates departing Jan 12, 2027Alaska AirlinesNonstopAxel-exclusive $119.00
Jan 12, 2027 · One way · Compare return dates departing Jan 12, 2027Delta Air LinesNonstopAxel-exclusive $124.00
Jan 14, 2027 – Jan 17, 2027 · 3 nights · Compare return dates departing Jan 14, 2027Alaska AirlinesNonstopAxel-exclusive $218.00
Jan 14, 2027 – Jan 17, 2027 · 3 nights · Compare return dates departing Jan 14, 2027Delta Air LinesNonstopAxel-exclusive $228.00
Jan 15, 2027 – Jan 18, 2027 · 3 nights · Compare return dates departing Jan 15, 2027Alaska AirlinesNonstopAxel-exclusive $218.00
Jan 15, 2027 – Jan 18, 2027 · 3 nights · Compare return dates departing Jan 15, 2027Delta Air LinesNonstopAxel-exclusive $228.00
Jan 16, 2027 – Jan 23, 2027 · 7 nights · Compare return dates departing Jan 16, 2027Alaska AirlinesNonstopAxel-exclusive $218.00
Jan 16, 2027 – Jan 23, 2027 · 7 nights · Compare return dates departing Jan 16, 2027Delta Air LinesNonstopAxel-exclusive $228.00
Jan 19, 2027 · One way · Compare return dates departing Jan 19, 2027Alaska AirlinesNonstopAxel-exclusive $119.00
Jan 19, 2027 · One way · Compare return dates departing Jan 19, 2027Delta Air LinesNonstopAxel-exclusive $124.00
Jan 21, 2027 – Jan 24, 2027 · 3 nights · Compare return dates departing Jan 21, 2027Alaska AirlinesNonstopAxel-exclusive $218.00
Jan 21, 2027 – Jan 24, 2027 · 3 nights · Compare return dates departing Jan 21, 2027Delta Air LinesNonstopAxel-exclusive $228.00
Jan 22, 2027 – Jan 25, 2027 · 3 nights · Compare return dates departing Jan 22, 2027Alaska AirlinesNonstopAxel-exclusive $218.00
Jan 22, 2027 – Jan 25, 2027 · 3 nights · Compare return dates departing Jan 22, 2027Delta Air LinesNonstopAxel-exclusive $228.00
Jan 23, 2027 – Jan 30, 2027 · 7 nights · Compare return dates departing Jan 23, 2027Alaska AirlinesNonstopAxel-exclusive $218.00
Jan 23, 2027 – Jan 30, 2027 · 7 nights · Compare return dates departing Jan 23, 2027Delta Air LinesNonstopAxel-exclusive $228.00
Jan 26, 2027 · One way · Compare return dates departing Jan 26, 2027Alaska AirlinesNonstopAxel-exclusive $119.00
Jan 26, 2027 · One way · Compare return dates departing Jan 26, 2027Delta Air LinesNonstopAxel-exclusive $124.00
Jan 28, 2027 – Jan 31, 2027 · 3 nights · Compare return dates departing Jan 28, 2027Alaska AirlinesNonstopAxel-exclusive $218.00
Jan 28, 2027 – Jan 31, 2027 · 3 nights · Compare return dates departing Jan 28, 2027Delta Air LinesNonstopAxel-exclusive $228.00
Jan 29, 2027 – Feb 1, 2027 · 3 nights · Compare return dates departing Jan 29, 2027Alaska AirlinesNonstopAxel-exclusive $218.00
Jan 29, 2027 – Feb 1, 2027 · 3 nights · Compare return dates departing Jan 29, 2027Delta Air LinesNonstopAxel-exclusive $228.00
Jan 30, 2027 – Feb 6, 2027 · 7 nights · Compare return dates departing Jan 30, 2027Alaska AirlinesNonstopAxel-exclusive $218.00
Jan 30, 2027 – Feb 6, 2027 · 7 nights · Compare return dates departing Jan 30, 2027Delta Air LinesNonstopAxel-exclusive $228.00

Seattle (SEA) to Boise (BOI): February 2027

Travel datesAirlineStopsTotal price
Feb 2, 2027 · One way · Compare return dates departing Feb 2, 2027Alaska AirlinesNonstopAxel-exclusive $119.00
Feb 2, 2027 · One way · Compare return dates departing Feb 2, 2027Delta Air LinesNonstopAxel-exclusive $124.00
Feb 4, 2027 – Feb 7, 2027 · 3 nights · Compare return dates departing Feb 4, 2027Alaska AirlinesNonstopAxel-exclusive $218.00
Feb 4, 2027 – Feb 7, 2027 · 3 nights · Compare return dates departing Feb 4, 2027Delta Air LinesNonstopAxel-exclusive $228.00
Feb 5, 2027 – Feb 8, 2027 · 3 nights · Compare return dates departing Feb 5, 2027Alaska AirlinesNonstopAxel-exclusive $218.00
Feb 5, 2027 – Feb 8, 2027 · 3 nights · Compare return dates departing Feb 5, 2027Delta Air LinesNonstopAxel-exclusive $228.00
Feb 6, 2027 – Feb 13, 2027 · 7 nights · Compare return dates departing Feb 6, 2027Alaska AirlinesNonstopAxel-exclusive $234.35
Feb 6, 2027 – Feb 13, 2027 · 7 nights · Compare return dates departing Feb 6, 2027Delta Air LinesNonstopAxel-exclusive $245.10
Feb 12, 2027 – Feb 15, 2027 · 3 nights · Compare return dates departing Feb 12, 2027Alaska AirlinesNonstopAxel-exclusive $250.70
Feb 12, 2027 – Feb 15, 2027 · 3 nights · Compare return dates departing Feb 12, 2027Delta Air LinesNonstopAxel-exclusive $262.20
Feb 19, 2027 – Feb 22, 2027 · 3 nights · Compare return dates departing Feb 19, 2027Alaska AirlinesNonstopAxel-exclusive $218.00
Feb 19, 2027 – Feb 22, 2027 · 3 nights · Compare return dates departing Feb 19, 2027Delta Air LinesNonstopAxel-exclusive $228.00
Feb 20, 2027 – Feb 27, 2027 · 7 nights · Compare return dates departing Feb 20, 2027Alaska AirlinesNonstopAxel-exclusive $218.00
Feb 20, 2027 – Feb 27, 2027 · 7 nights · Compare return dates departing Feb 20, 2027Delta Air LinesNonstopAxel-exclusive $228.00

Seattle (SEA) to Boise (BOI): March 2027

Travel datesAirlineStopsTotal price
Mar 19, 2027 – Mar 22, 2027 · 3 nights · Compare return dates departing Mar 19, 2027Alaska AirlinesNonstopAxel-exclusive $218.00
Mar 19, 2027 – Mar 22, 2027 · 3 nights · Compare return dates departing Mar 19, 2027Delta Air LinesNonstopAxel-exclusive $228.00
Mar 20, 2027 – Mar 27, 2027 · 7 nights · Compare return dates departing Mar 20, 2027Alaska AirlinesNonstopAxel-exclusive $218.00
Mar 20, 2027 – Mar 27, 2027 · 7 nights · Compare return dates departing Mar 20, 2027Delta Air LinesNonstopAxel-exclusive $228.00
Mar 25, 2027 – Mar 29, 2027 · 4 nights · Compare return dates departing Mar 25, 2027Alaska AirlinesNonstopAxel-exclusive $238.00
Mar 25, 2027 – Mar 29, 2027 · 4 nights · Compare return dates departing Mar 25, 2027Delta Air LinesNonstopAxel-exclusive $248.00

Seattle (SEA) to Boise (BOI): April 2027

Travel datesAirlineStopsTotal price
Apr 16, 2027 – Apr 19, 2027 · 3 nights · Compare return dates departing Apr 16, 2027Alaska AirlinesNonstopAxel-exclusive $258.00
Apr 16, 2027 – Apr 19, 2027 · 3 nights · Compare return dates departing Apr 16, 2027Delta Air LinesNonstopAxel-exclusive $268.00
Apr 17, 2027 – Apr 24, 2027 · 7 nights · Compare return dates departing Apr 17, 2027Alaska AirlinesNonstopAxel-exclusive $258.00
Apr 17, 2027 – Apr 24, 2027 · 7 nights · Compare return dates departing Apr 17, 2027Delta Air LinesNonstopAxel-exclusive $268.00

Seattle (SEA) to Boise (BOI): May 2027

Travel datesAirlineStopsTotal price
May 14, 2027 – May 17, 2027 · 3 nights · Compare return dates departing May 14, 2027Alaska AirlinesNonstopAxel-exclusive $258.00
May 14, 2027 – May 17, 2027 · 3 nights · Compare return dates departing May 14, 2027Delta Air LinesNonstopAxel-exclusive $268.00
May 15, 2027 – May 22, 2027 · 7 nights · Compare return dates departing May 15, 2027Alaska AirlinesNonstopAxel-exclusive $258.00
May 15, 2027 – May 22, 2027 · 7 nights · Compare return dates departing May 15, 2027Delta Air LinesNonstopAxel-exclusive $268.00
May 28, 2027 – May 31, 2027 · 3 nights · Compare return dates departing May 28, 2027Alaska AirlinesNonstopAxel-exclusive $296.70
May 28, 2027 – May 31, 2027 · 3 nights · Compare return dates departing May 28, 2027Delta Air LinesNonstopAxel-exclusive $308.20

Seattle (SEA) to Boise (BOI): June 2027

Travel datesAirlineStopsTotal price
Jun 11, 2027 – Jun 14, 2027 · 3 nights · Compare return dates departing Jun 11, 2027Alaska AirlinesNonstopAxel-exclusive $258.00
Jun 11, 2027 – Jun 14, 2027 · 3 nights · Compare return dates departing Jun 11, 2027Delta Air LinesNonstopAxel-exclusive $268.00
Jun 12, 2027 – Jun 19, 2027 · 7 nights · Compare return dates departing Jun 12, 2027Alaska AirlinesNonstopAxel-exclusive $258.00
Jun 12, 2027 – Jun 19, 2027 · 7 nights · Compare return dates departing Jun 12, 2027Delta Air LinesNonstopAxel-exclusive $268.00

Seattle (SEA) to Boise (BOI): July 2027

Travel datesAirlineStopsTotal price
Jul 2, 2027 – Jul 6, 2027 · 4 nights · Compare return dates departing Jul 2, 2027Alaska AirlinesNonstopAxel-exclusive $309.60
Jul 2, 2027 – Jul 6, 2027 · 4 nights · Compare return dates departing Jul 2, 2027Delta Air LinesNonstopAxel-exclusive $321.60
Jul 9, 2027 – Jul 12, 2027 · 3 nights · Compare return dates departing Jul 9, 2027Alaska AirlinesNonstopAxel-exclusive $258.00
Jul 9, 2027 – Jul 12, 2027 · 3 nights · Compare return dates departing Jul 9, 2027Delta Air LinesNonstopAxel-exclusive $268.00
Jul 10, 2027 – Jul 17, 2027 · 7 nights · Compare return dates departing Jul 10, 2027Alaska AirlinesNonstopAxel-exclusive $258.00
Jul 10, 2027 – Jul 17, 2027 · 7 nights · Compare return dates departing Jul 10, 2027Delta Air LinesNonstopAxel-exclusive $268.00

Seattle (SEA) to Boise (BOI): August 2027

Travel datesAirlineStopsTotal price
Aug 6, 2027 – Aug 9, 2027 · 3 nights · Compare return dates departing Aug 6, 2027Alaska AirlinesNonstopAxel-exclusive $258.00
Aug 6, 2027 – Aug 9, 2027 · 3 nights · Compare return dates departing Aug 6, 2027Delta Air LinesNonstopAxel-exclusive $268.00
Aug 7, 2027 – Aug 14, 2027 · 7 nights · Compare return dates departing Aug 7, 2027Alaska AirlinesNonstopAxel-exclusive $258.00
Aug 7, 2027 – Aug 14, 2027 · 7 nights · Compare return dates departing Aug 7, 2027Delta Air LinesNonstopAxel-exclusive $268.00

Seattle (SEA) to Boise (BOI): September 2027

Travel datesAirlineStopsTotal price
Sep 3, 2027 – Sep 6, 2027 · 3 nights · Compare return dates departing Sep 3, 2027Alaska AirlinesNonstopAxel-exclusive $296.70
Sep 3, 2027 – Sep 6, 2027 · 3 nights · Compare return dates departing Sep 3, 2027Delta Air LinesNonstopAxel-exclusive $308.20
Sep 4, 2027 – Sep 11, 2027 · 7 nights · Compare return dates departing Sep 4, 2027Alaska AirlinesNonstopAxel-exclusive $277.35
Sep 4, 2027 – Sep 11, 2027 · 7 nights · Compare return dates departing Sep 4, 2027Delta Air LinesNonstopAxel-exclusive $288.10
Sep 24, 2027 – Sep 27, 2027 · 3 nights · Compare return dates departing Sep 24, 2027Alaska AirlinesNonstopAxel-exclusive $258.00
Sep 24, 2027 – Sep 27, 2027 · 3 nights · Compare return dates departing Sep 24, 2027Delta Air LinesNonstopAxel-exclusive $268.00
Sep 25, 2027 – Oct 2, 2027 · 7 nights · Compare return dates departing Sep 25, 2027Alaska AirlinesNonstopAxel-exclusive $258.00
Sep 25, 2027 – Oct 2, 2027 · 7 nights · Compare return dates departing Sep 25, 2027Delta Air LinesNonstopAxel-exclusive $268.00

Hotels in Boise for these trips

Hotels: under a trip, hotels in Boise 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 Boise

Route overview: Seattle to Boise (BOI) flight deals

2026-11-19 → 2026-11-22 · Axel-exclusive $228.00

  • Delta Air Lines DL3692: SEA 2026-11-19 19:50:00 → BOI 2026-11-19 22:26:00; nonstop; 96 minutes. Local airport times.
  • Delta Air Lines DL3740: BOI 2026-11-22 08:55:00 → SEA 2026-11-22 09:59:00; nonstop; 124 minutes. Local airport times.

2026-11-19 → 2026-11-22 · Axel-exclusive $258.00

  • Southwest Airlines WN3833 / WN866: SEA 2026-11-19 05:15:00 → BOI 2026-11-19 12:25:00; 1 stop(s) via SMF; 370 minutes. Local airport times.
    • WN3833: SEA 2026-11-19 05:15:00 → SMF 2026-11-19 07:05:00; layover at SMF: 175 minutes.
    • WN866: SMF 2026-11-19 10:00:00 → BOI 2026-11-19 12:25:00.
  • Southwest Airlines WN784 / WN4889: BOI 2026-11-22 18:40:00 → SEA 2026-11-22 22:20:00; 1 stop(s) via SMF; 280 minutes. Local airport times.
    • WN784: BOI 2026-11-22 18:40:00 → SMF 2026-11-22 19:10:00; layover at SMF: 65 minutes.
    • WN4889: SMF 2026-11-22 20:15:00 → SEA 2026-11-22 22:20:00.

2026-11-24 · one way · Axel-exclusive $160.65

  • Alaska Airlines AS2200: SEA 2026-11-24 15:40:00 → BOI 2026-11-24 18:03:00; nonstop; 83 minutes. Local airport times.

2026-11-24 · one way · Axel-exclusive $167.40

  • Delta Air Lines DL3959: SEA 2026-11-24 13:30:00 → BOI 2026-11-24 16:05:00; nonstop; 95 minutes. Local airport times.

2026-11-28 → 2026-12-05 · Axel-exclusive $256.15

  • Alaska Airlines AS1354: SEA 2026-11-28 23:01:00 → BOI 2026-11-29 01:28:00; nonstop; 87 minutes. Local airport times.
  • Alaska Airlines AS3016: BOI 2026-12-05 18:00:00 → SEA 2026-12-05 18:50:00; nonstop; 110 minutes. Local airport times.

2026-11-28 → 2026-12-05 · Axel-exclusive $267.90

  • Delta Air Lines DL3959: SEA 2026-11-28 13:30:00 → BOI 2026-11-28 16:05:00; nonstop; 95 minutes. Local airport times.
  • Delta Air Lines DL3750: BOI 2026-12-05 10:37:00 → SEA 2026-12-05 11:36:00; nonstop; 119 minutes. Local airport times.

2026-12-12 → 2026-12-19 · Axel-exclusive $250.70

  • Alaska Airlines AS2344: SEA 2026-12-12 11:51:00 → BOI 2026-12-12 14:18:00; nonstop; 87 minutes. Local airport times.
  • Alaska Airlines AS445: BOI 2026-12-19 16:59:00 → SEA 2026-12-19 17:42:00; nonstop; 103 minutes. Local airport times.

2026-12-12 → 2026-12-19 · Axel-exclusive $262.20

  • Delta Air Lines DL3688: SEA 2026-12-12 16:05:00 → BOI 2026-12-12 18:38:00; nonstop; 93 minutes. Local airport times.
  • Delta Air Lines DL4127: BOI 2026-12-19 14:10:00 → SEA 2026-12-19 15:00:00; nonstop; 110 minutes. Local airport times.

2026-12-25 → 2026-12-28 · Axel-exclusive $277.95

  • Alaska Airlines AS350: SEA 2026-12-25 21:31:00 → BOI 2026-12-25 23:59:00; nonstop; 88 minutes. Local airport times.
  • Alaska Airlines AS2347: BOI 2026-12-28 10:52:00 → SEA 2026-12-28 11:30:00; nonstop; 98 minutes. Local airport times.

2026-12-25 → 2026-12-28 · Axel-exclusive $290.70

  • Delta Air Lines DL3688: SEA 2026-12-25 14:44:00 → BOI 2026-12-25 17:15:00; nonstop; 91 minutes. Local airport times.
  • Delta Air Lines DL3750: BOI 2026-12-28 11:53:00 → SEA 2026-12-28 12:50:00; nonstop; 117 minutes. Local airport times.

2027-01-07 → 2027-01-10 · Axel-exclusive $218.00

  • Alaska Airlines AS2344: SEA 2027-01-07 11:51:00 → BOI 2027-01-07 14:18:00; nonstop; 87 minutes. Local airport times.
  • Alaska Airlines AS337: BOI 2027-01-10 16:20:00 → SEA 2027-01-10 17:00:00; nonstop; 100 minutes. Local airport times.

2027-01-07 → 2027-01-10 · Axel-exclusive $228.00

  • Delta Air Lines DL3688: SEA 2027-01-07 16:47:00 → BOI 2027-01-07 19:17:00; nonstop; 90 minutes. Local airport times.
  • Delta Air Lines DL3750: BOI 2027-01-10 11:53:00 → SEA 2027-01-10 12:50:00; nonstop; 117 minutes. Local airport times.

2027-01-21 → 2027-01-24 · Axel-exclusive $218.00

  • Alaska Airlines AS2344: SEA 2027-01-21 11:51:00 → BOI 2027-01-21 14:18:00; nonstop; 87 minutes. Local airport times.
  • Alaska Airlines AS337: BOI 2027-01-24 16:20:00 → SEA 2027-01-24 17:00:00; nonstop; 100 minutes. Local airport times.

2027-01-21 → 2027-01-24 · Axel-exclusive $228.00

  • Delta Air Lines DL4127: SEA 2027-01-21 10:35:00 → BOI 2027-01-21 13:10:00; nonstop; 95 minutes. Local airport times.
  • Delta Air Lines DL3750: BOI 2027-01-24 11:53:00 → SEA 2027-01-24 12:50:00; nonstop; 117 minutes. Local airport times.

2027-02-04 → 2027-02-07 · Axel-exclusive $218.00

  • Alaska Airlines AS2344: SEA 2027-02-04 11:51:00 → BOI 2027-02-04 14:18:00; nonstop; 87 minutes. Local airport times.
  • Alaska Airlines AS337: BOI 2027-02-07 16:20:00 → SEA 2027-02-07 17:00:00; nonstop; 100 minutes. Local airport times.

2027-02-04 → 2027-02-07 · Axel-exclusive $258.00

  • Southwest Airlines WN3833 / WN866: SEA 2027-02-04 05:15:00 → BOI 2027-02-04 12:25:00; 1 stop(s) via SMF; 370 minutes. Local airport times.
    • WN3833: SEA 2027-02-04 05:15:00 → SMF 2027-02-04 07:05:00; layover at SMF: 175 minutes.
    • WN866: SMF 2027-02-04 10:00:00 → BOI 2027-02-04 12:25:00.
  • Southwest Airlines WN784 / WN4889: BOI 2027-02-07 18:40:00 → SEA 2027-02-07 22:20:00; 1 stop(s) via SMF; 280 minutes. Local airport times.
    • WN784: BOI 2027-02-07 18:40:00 → SMF 2027-02-07 19:10:00; layover at SMF: 65 minutes.
    • WN4889: SMF 2027-02-07 20:15:00 → SEA 2027-02-07 22:20:00.

2027-03-19 → 2027-03-22 · Axel-exclusive $218.00

  • Alaska Airlines AS350: SEA 2027-03-19 21:31:00 → BOI 2027-03-19 23:59:00; nonstop; 88 minutes. Local airport times.
  • Alaska Airlines AS2347: BOI 2027-03-22 10:52:00 → SEA 2027-03-22 11:30:00; nonstop; 98 minutes. Local airport times.

2027-03-19 → 2027-03-22 · Axel-exclusive $228.00

  • Delta Air Lines DL4127: SEA 2027-03-19 10:35:00 → BOI 2027-03-19 13:10:00; nonstop; 95 minutes. Local airport times.
  • Delta Air Lines DL3750: BOI 2027-03-22 11:53:00 → SEA 2027-03-22 12:50:00; nonstop; 117 minutes. Local airport times.

2027-05-15 → 2027-05-22 · Axel-exclusive $258.00

  • Alaska Airlines AS2344: SEA 2027-05-15 13:59:00 → BOI 2027-05-15 16:20:00; nonstop; 81 minutes. Local airport times.
  • Alaska Airlines AS2007: BOI 2027-05-22 20:46:00 → SEA 2027-05-22 21:27:00; nonstop; 101 minutes. Local airport times.

2027-05-15 → 2027-05-22 · Axel-exclusive $268.00

  • Delta Air Lines DL4127: SEA 2027-05-15 10:35:00 → BOI 2027-05-15 13:10:00; nonstop; 95 minutes. Local airport times.
  • Delta Air Lines DL4127: BOI 2027-05-22 14:10:00 → SEA 2027-05-22 15:00:00; nonstop; 110 minutes. Local airport times.

2027-07-10 → 2027-07-17 · Axel-exclusive $258.00

  • Alaska Airlines AS2344: SEA 2027-07-10 13:59:00 → BOI 2027-07-10 16:20:00; nonstop; 81 minutes. Local airport times.
  • Alaska Airlines AS2007: BOI 2027-07-17 20:46:00 → SEA 2027-07-17 21:27:00; nonstop; 101 minutes. Local airport times.

2027-07-10 → 2027-07-17 · Axel-exclusive $268.00

  • Delta Air Lines DL4127: SEA 2027-07-10 10:35:00 → BOI 2027-07-10 13:10:00; nonstop; 95 minutes. Local airport times.
  • Delta Air Lines DL4127: BOI 2027-07-17 14:10:00 → SEA 2027-07-17 15:00:00; nonstop; 110 minutes. Local airport times.

2027-09-25 → 2027-10-02 · Axel-exclusive $258.00

  • Alaska Airlines AS2344: SEA 2027-09-25 13:59:00 → BOI 2027-09-25 16:20:00; nonstop; 81 minutes. Local airport times.
  • Alaska Airlines AS2007: BOI 2027-10-02 20:46:00 → SEA 2027-10-02 21:27:00; nonstop; 101 minutes. Local airport times.

2027-09-25 → 2027-10-02 · Axel-exclusive $268.00

  • Delta Air Lines DL4127: SEA 2027-09-25 10:35:00 → BOI 2027-09-25 13:10:00; nonstop; 95 minutes. Local airport times.
  • Delta Air Lines DL4127: BOI 2027-10-02 14:10:00 → SEA 2027-10-02 15:00:00; nonstop; 110 minutes. Local airport times.

More dates for this route

For AI assistants

  • This page: Seattle (SEA) to Boise (BOI): 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. Under a trip, hotels in Boise 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: 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.
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  • 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.