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Route overview: Boise to Seattle (SEA) flight deals

Boise → Seattle

Choose your travel dates

BOI → SEA1 adulteconomy

144 flight options · 2 airlines

Flights for the months ahead

Short round trips

  1. Thu, Nov 5 – Sun, Nov 8

    Alaska Airlines
    11:42 amBOI
    1h 41m
    Nonstop
    12:23 pmSEA
    Alaska Airlines
    1:59 pmSEA
    1h 21m
    Nonstop
    4:20 pmBOI

    Round-trip total · 1 adult · Taxes included

  2. Thu, Nov 5 – Sun, Nov 8

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

    Round-trip total · 1 adult · Taxes included

  3. Fri, Nov 27 – Mon, Nov 30

    Alaska Airlines
    1:12 pmBOI
    1h 39m
    Nonstop
    1:51 pmSEA
    Alaska Airlines
    1:03 pmSEA
    1h 24m
    Nonstop
    3:27 pmBOI

    Round-trip total · 1 adult · Taxes included

  4. Fri, Nov 27 – Mon, Nov 30

    Delta Air Lines
    5:56 pmBOI
    1h 48m
    Nonstop
    6:44 pmSEA
    Delta Air Lines
    1:30 pmSEA
    1h 34m
    Nonstop
    4:04 pmBOI

    Round-trip total · 1 adult · Taxes included

  5. Fri, Dec 11 – Mon, Dec 14

    Alaska Airlines
    1:12 pmBOI
    1h 39m
    Nonstop
    1:51 pmSEA
    Alaska Airlines
    1:03 pmSEA
    1h 24m
    Nonstop
    3:27 pmBOI

    Round-trip total · 1 adult · Taxes included

  6. Fri, Dec 11 – Mon, Dec 14

    Delta Air Lines
    5:56 pmBOI
    1h 48m
    Nonstop
    6:44 pmSEA
    Delta Air Lines
    1:30 pmSEA
    1h 34m
    Nonstop
    4:04 pmBOI

    Round-trip total · 1 adult · Taxes included

  7. Thu, Dec 24 – Sun, Dec 27

    Alaska Airlines
    11:42 amBOI
    1h 41m
    Nonstop
    12:23 pmSEA
    Alaska Airlines
    1:59 pmSEA
    1h 21m
    Nonstop
    4:20 pmBOI

    Round-trip total · 1 adult · Taxes included

  8. Thu, Dec 24 – Sun, Dec 27

    Delta Air Lines
    12:20 pmBOI
    1h 54m
    Nonstop
    1:14 pmSEA
    Delta Air Lines
    9:20 pmSEA
    1h 30m
    Nonstop
    11:50 pmBOI

    Round-trip total · 1 adult · Taxes included

  9. Fri, Feb 12 – Mon, Feb 15

    Alaska Airlines
    1:12 pmBOI
    1h 39m
    Nonstop
    1:51 pmSEA
    Alaska Airlines
    1:03 pmSEA
    1h 24m
    Nonstop
    3:27 pmBOI

    Round-trip total · 1 adult · Taxes included

  10. Fri, Feb 12 – Mon, Feb 15

    Delta Air Lines
    5:56 pmBOI
    1h 48m
    Nonstop
    6:44 pmSEA
    Delta Air Lines
    1:30 pmSEA
    1h 34m
    Nonstop
    4:04 pmBOI

    Round-trip total · 1 adult · Taxes included

  11. Fri, Apr 30 – Mon, May 3

    Alaska Airlines
    1:12 pmBOI
    1h 39m
    Nonstop
    1:51 pmSEA
    Alaska Airlines
    1:03 pmSEA
    1h 24m
    Nonstop
    3:27 pmBOI

    Round-trip total · 1 adult · Taxes included

  12. Fri, Apr 30 – Mon, May 3

    Delta Air Lines
    5:56 pmBOI
    1h 48m
    Nonstop
    6:44 pmSEA
    Delta Air Lines
    1:30 pmSEA
    1h 34m
    Nonstop
    4:04 pmBOI

    Round-trip total · 1 adult · Taxes included

  13. Fri, Jul 2 – Tue, Jul 6

    Alaska Airlines
    1:12 pmBOI
    1h 39m
    Nonstop
    1:51 pmSEA
    Alaska Airlines
    3:40 pmSEA
    1h 23m
    Nonstop
    6:03 pmBOI

    Round-trip total · 1 adult · Taxes included

  14. Fri, Jul 2 – Tue, Jul 6

    Delta Air Lines
    5:56 pmBOI
    1h 48m
    Nonstop
    6:44 pmSEA
    Delta Air Lines
    2:45 pmSEA
    1h 31m
    Nonstop
    5:16 pmBOI

    Round-trip total · 1 adult · Taxes included

  15. Fri, Sep 17 – Mon, Sep 20

    Alaska Airlines
    1:12 pmBOI
    1h 39m
    Nonstop
    1:51 pmSEA
    Alaska Airlines
    1:03 pmSEA
    1h 24m
    Nonstop
    3:27 pmBOI

    Round-trip total · 1 adult · Taxes included

  16. Fri, Sep 17 – Mon, Sep 20

    Delta Air Lines
    5:56 pmBOI
    1h 48m
    Nonstop
    6:44 pmSEA
    Delta Air Lines
    1:30 pmSEA
    1h 34m
    Nonstop
    4:04 pmBOI

    Round-trip total · 1 adult · Taxes included

Swipe to see 15 more recent deals.

1 of 16

Longer round trips

  1. Sat, Nov 14 – Sat, Nov 21

    Alaska Airlines
    7:21 pmBOI
    1h 40m
    Nonstop
    8:01 pmSEA
    Alaska Airlines
    1:59 pmSEA
    1h 21m
    Nonstop
    4:20 pmBOI

    Round-trip total · 1 adult · Taxes included

  2. Sat, Nov 14 – Sat, Nov 21

    Delta Air Lines
    2:10 pmBOI
    1h 50m
    Nonstop
    3:00 pmSEA
    Delta Air Lines
    4:47 pmSEA
    1h 30m
    Nonstop
    7:17 pmBOI

    Round-trip total · 1 adult · Taxes included

  3. Sat, Jan 2 – Sat, Jan 9

    Alaska Airlines
    7:21 pmBOI
    1h 40m
    Nonstop
    8:01 pmSEA
    Alaska Airlines
    1:59 pmSEA
    1h 21m
    Nonstop
    4:20 pmBOI

    Round-trip total · 1 adult · Taxes included

  4. Sat, Jan 2 – Sat, Jan 9

    Delta Air Lines
    2:10 pmBOI
    1h 50m
    Nonstop
    3:00 pmSEA
    Delta Air Lines
    4:47 pmSEA
    1h 30m
    Nonstop
    7:17 pmBOI

    Round-trip total · 1 adult · Taxes included

  5. Sat, Jan 16 – Sat, Jan 23

    Alaska Airlines
    7:21 pmBOI
    1h 40m
    Nonstop
    8:01 pmSEA
    Alaska Airlines
    1:59 pmSEA
    1h 21m
    Nonstop
    4:20 pmBOI

    Round-trip total · 1 adult · Taxes included

  6. Sat, Jan 16 – Sat, Jan 23

    Delta Air Lines
    2:10 pmBOI
    1h 50m
    Nonstop
    3:00 pmSEA
    Delta Air Lines
    4:47 pmSEA
    1h 30m
    Nonstop
    7:17 pmBOI

    Round-trip total · 1 adult · Taxes included

Swipe to see 5 more recent deals.

1 of 6

One-way flights

  1. Tue, Nov 10 · One way

    Alaska Airlines
    6:21 pmBOI
    1h 36m
    Nonstop
    6:57 pmSEA

    One-way total · 1 adult · Taxes included

  2. Tue, Nov 10 · One way

    Delta Air Lines
    12:13 pmBOI
    1h 47m
    Nonstop
    1:00 pmSEA

    One-way total · 1 adult · Taxes included

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

Nov 5 – Nov 8 · 3 nightsAlaska AirlinesNonstop$220.00 Nov 5 – Nov 8 · 3 nightsDelta Air LinesNonstop$240.00 Nov 6 – Nov 9 · 3 nightsAlaska AirlinesNonstop$220.00 Nov 6 – Nov 9 · 3 nightsDelta Air LinesNonstop$240.00 Nov 7 – Nov 14 · 7 nightsAlaska AirlinesNonstop$220.00 Nov 7 – Nov 14 · 7 nightsDelta Air LinesNonstop$240.00 Nov 10 · One wayAlaska AirlinesNonstop$115.00 Nov 10 · One wayDelta Air LinesNonstop$125.00 Nov 12 – Nov 15 · 3 nightsAlaska AirlinesNonstop$220.00 Nov 12 – Nov 15 · 3 nightsDelta Air LinesNonstop$240.00 Nov 13 – Nov 16 · 3 nightsAlaska AirlinesNonstop$220.00 Nov 13 – Nov 16 · 3 nightsDelta Air LinesNonstop$240.00 Nov 14 – Nov 21 · 7 nightsAlaska AirlinesNonstop$220.00 Nov 14 – Nov 21 · 7 nightsDelta Air LinesNonstop$240.00 Nov 17 · One wayAlaska AirlinesNonstop$115.00 Nov 17 · One wayDelta Air LinesNonstop$125.00 Nov 19 – Nov 22 · 3 nightsAlaska AirlinesNonstop$220.00 Nov 19 – Nov 22 · 3 nightsDelta Air LinesNonstop$240.00 Nov 20 – Nov 23 · 3 nightsAlaska AirlinesNonstop$220.00 Nov 20 – Nov 23 · 3 nightsDelta Air LinesNonstop$240.00 Nov 21 – Nov 28 · 7 nightsAlaska AirlinesNonstop$258.50 Nov 21 – Nov 28 · 7 nightsDelta Air LinesNonstop$282.00 Nov 24 · One wayAlaska AirlinesNonstop$155.25 Nov 24 · One wayDelta Air LinesNonstop$168.75 Nov 24 – Nov 29 · 5 nightsAlaska AirlinesNonstop$297.00 Nov 24 – Nov 29 · 5 nightsDelta Air LinesNonstop$324.00 Nov 26 – Nov 29 · 3 nightsAlaska AirlinesNonstop$297.00 Nov 26 – Nov 29 · 3 nightsDelta Air LinesNonstop$324.00 Nov 27 – Nov 30 · 3 nightsAlaska AirlinesNonstop$297.00 Nov 27 – Nov 30 · 3 nightsDelta Air LinesNonstop$324.00 Nov 28 – Dec 5 · 7 nightsAlaska AirlinesNonstop$258.50 Nov 28 – Dec 5 · 7 nightsDelta Air LinesNonstop$282.00

December 2026

Dec 1 · One wayAlaska AirlinesNonstop$115.00 Dec 1 · One wayDelta Air LinesNonstop$125.00 Dec 3 – Dec 6 · 3 nightsAlaska AirlinesNonstop$220.00 Dec 3 – Dec 6 · 3 nightsDelta Air LinesNonstop$240.00 Dec 4 – Dec 7 · 3 nightsAlaska AirlinesNonstop$220.00 Dec 4 – Dec 7 · 3 nightsDelta Air LinesNonstop$240.00 Dec 5 – Dec 12 · 7 nightsAlaska AirlinesNonstop$220.00 Dec 5 – Dec 12 · 7 nightsDelta Air LinesNonstop$240.00 Dec 8 · One wayAlaska AirlinesNonstop$115.00 Dec 8 · One wayDelta Air LinesNonstop$125.00 Dec 10 – Dec 13 · 3 nightsAlaska AirlinesNonstop$220.00 Dec 10 – Dec 13 · 3 nightsDelta Air LinesNonstop$240.00 Dec 11 – Dec 14 · 3 nightsAlaska AirlinesNonstop$220.00 Dec 11 – Dec 14 · 3 nightsDelta Air LinesNonstop$240.00 Dec 12 – Dec 19 · 7 nightsAlaska AirlinesNonstop$253.00 Dec 12 – Dec 19 · 7 nightsDelta Air LinesNonstop$276.00 Dec 15 · One wayAlaska AirlinesNonstop$115.00 Dec 15 · One wayDelta Air LinesNonstop$125.00 Dec 17 – Dec 20 · 3 nightsAlaska AirlinesNonstop$253.00 Dec 17 – Dec 20 · 3 nightsDelta Air LinesNonstop$276.00 Dec 18 – Dec 21 · 3 nightsAlaska AirlinesNonstop$253.00 Dec 18 – Dec 21 · 3 nightsDelta Air LinesNonstop$276.00 Dec 19 – Dec 26 · 7 nightsAlaska AirlinesNonstop$286.00 Dec 19 – Dec 26 · 7 nightsDelta Air LinesNonstop$312.00 Dec 22 · One wayAlaska AirlinesNonstop$149.50 Dec 22 · One wayDelta Air LinesNonstop$162.50 Dec 22 – Dec 27 · 5 nightsAlaska AirlinesNonstop$286.00 Dec 22 – Dec 27 · 5 nightsDelta Air LinesNonstop$312.00 Dec 24 – Dec 27 · 3 nightsAlaska AirlinesNonstop$286.00 Dec 24 – Dec 27 · 3 nightsDelta Air LinesNonstop$312.00 Dec 25 – Dec 28 · 3 nightsAlaska AirlinesNonstop$280.50 Dec 25 – Dec 28 · 3 nightsDelta Air LinesNonstop$306.00 Dec 26 – Jan 2 · 7 nightsAlaska AirlinesNonstop$272.80 Dec 26 – Jan 2 · 7 nightsDelta Air LinesNonstop$297.60 Dec 29 · One wayAlaska AirlinesNonstop$143.75 Dec 29 · One wayDelta Air LinesNonstop$156.25 Dec 30 – Jan 2 · 3 nightsAlaska AirlinesNonstop$267.30 Dec 30 – Jan 2 · 3 nightsDelta Air LinesNonstop$291.60 Dec 31 – Jan 3 · 3 nightsAlaska AirlinesNonstop$267.30 Dec 31 – Jan 3 · 3 nightsDelta Air LinesNonstop$291.60

January 2027

Jan 1 – Jan 4 · 3 nightsAlaska AirlinesNonstop$234.30 Jan 1 – Jan 4 · 3 nightsDelta Air LinesNonstop$255.60 Jan 2 – Jan 9 · 7 nightsAlaska AirlinesNonstop$234.30 Jan 2 – Jan 9 · 7 nightsDelta Air LinesNonstop$255.60 Jan 5 · One wayAlaska AirlinesNonstop$109.25 Jan 5 · One wayDelta Air LinesNonstop$118.75 Jan 7 – Jan 10 · 3 nightsAlaska AirlinesNonstop$209.00 Jan 7 – Jan 10 · 3 nightsDelta Air LinesNonstop$228.00 Jan 8 – Jan 11 · 3 nightsAlaska AirlinesNonstop$209.00 Jan 8 – Jan 11 · 3 nightsDelta Air LinesNonstop$228.00 Jan 9 – Jan 16 · 7 nightsAlaska AirlinesNonstop$209.00 Jan 9 – Jan 16 · 7 nightsDelta Air LinesNonstop$228.00 Jan 12 · One wayAlaska AirlinesNonstop$109.25 Jan 12 · One wayDelta Air LinesNonstop$118.75 Jan 14 – Jan 17 · 3 nightsAlaska AirlinesNonstop$209.00 Jan 14 – Jan 17 · 3 nightsDelta Air LinesNonstop$228.00 Jan 15 – Jan 18 · 3 nightsAlaska AirlinesNonstop$209.00 Jan 15 – Jan 18 · 3 nightsDelta Air LinesNonstop$228.00 Jan 16 – Jan 23 · 7 nightsAlaska AirlinesNonstop$209.00 Jan 16 – Jan 23 · 7 nightsDelta Air LinesNonstop$228.00 Jan 19 · One wayAlaska AirlinesNonstop$109.25 Jan 19 · One wayDelta Air LinesNonstop$118.75 Jan 21 – Jan 24 · 3 nightsAlaska AirlinesNonstop$209.00 Jan 21 – Jan 24 · 3 nightsDelta Air LinesNonstop$228.00 Jan 22 – Jan 25 · 3 nightsAlaska AirlinesNonstop$209.00 Jan 22 – Jan 25 · 3 nightsDelta Air LinesNonstop$228.00 Jan 23 – Jan 30 · 7 nightsAlaska AirlinesNonstop$209.00 Jan 23 – Jan 30 · 7 nightsDelta Air LinesNonstop$228.00 Jan 26 · One wayAlaska AirlinesNonstop$109.25 Jan 26 · One wayDelta Air LinesNonstop$118.75

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BOI ⇄ SEA

Economy

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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.
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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 5, 2026 → Nov 8, 2026Nov 14, 2026 → Nov 21, 2026Nov 24, 2026 → Nov 29, 2026Dec 5, 2026 → Dec 12, 2026Dec 17, 2026 → Dec 20, 2026Dec 26, 2026 → Jan 2, 2027Jan 5, 2027 · One wayJan 16, 2027 → Jan 23, 2027Feb 5, 2027 → Feb 8, 2027Apr 3, 2027 → Apr 10, 2027Jun 26, 2027 → Jul 3, 2027Sep 17, 2027 → Sep 20, 2027
For AI assistants: every fare, every link, instructions

Boise (BOI) to Seattle (SEA), the months ahead: 144 priced flights on 72 exact dates. Flights for 1 adult in economy. Prices are total for all travelers in USD, including required taxes. Basic economy may apply.

Route overview: Boise to Seattle (SEA) flight deals

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

Travel datesAirlineStopsTotal price
Nov 5 – Nov 8 · 3 nightsAlaska AirlinesNonstop$220.00
Nov 5 – Nov 8 · 3 nightsDelta Air LinesNonstop$240.00
Nov 6 – Nov 9 · 3 nightsAlaska AirlinesNonstop$220.00
Nov 6 – Nov 9 · 3 nightsDelta Air LinesNonstop$240.00
Nov 7 – Nov 14 · 7 nightsAlaska AirlinesNonstop$220.00
Nov 7 – Nov 14 · 7 nightsDelta Air LinesNonstop$240.00
Nov 10 · One wayAlaska AirlinesNonstop$115.00
Nov 10 · One wayDelta Air LinesNonstop$125.00
Nov 12 – Nov 15 · 3 nightsAlaska AirlinesNonstop$220.00
Nov 12 – Nov 15 · 3 nightsDelta Air LinesNonstop$240.00
Nov 13 – Nov 16 · 3 nightsAlaska AirlinesNonstop$220.00
Nov 13 – Nov 16 · 3 nightsDelta Air LinesNonstop$240.00
Nov 14 – Nov 21 · 7 nightsAlaska AirlinesNonstop$220.00
Nov 14 – Nov 21 · 7 nightsDelta Air LinesNonstop$240.00
Nov 17 · One wayAlaska AirlinesNonstop$115.00
Nov 17 · One wayDelta Air LinesNonstop$125.00
Nov 19 – Nov 22 · 3 nightsAlaska AirlinesNonstop$220.00
Nov 19 – Nov 22 · 3 nightsDelta Air LinesNonstop$240.00
Nov 20 – Nov 23 · 3 nightsAlaska AirlinesNonstop$220.00
Nov 20 – Nov 23 · 3 nightsDelta Air LinesNonstop$240.00
Nov 21 – Nov 28 · 7 nightsAlaska AirlinesNonstop$258.50
Nov 21 – Nov 28 · 7 nightsDelta Air LinesNonstop$282.00
Nov 24 · One wayAlaska AirlinesNonstop$155.25
Nov 24 · One wayDelta Air LinesNonstop$168.75
Nov 24 – Nov 29 · 5 nightsAlaska AirlinesNonstop$297.00
Nov 24 – Nov 29 · 5 nightsDelta Air LinesNonstop$324.00
Nov 26 – Nov 29 · 3 nightsAlaska AirlinesNonstop$297.00
Nov 26 – Nov 29 · 3 nightsDelta Air LinesNonstop$324.00
Nov 27 – Nov 30 · 3 nightsAlaska AirlinesNonstop$297.00
Nov 27 – Nov 30 · 3 nightsDelta Air LinesNonstop$324.00
Nov 28 – Dec 5 · 7 nightsAlaska AirlinesNonstop$258.50
Nov 28 – Dec 5 · 7 nightsDelta Air LinesNonstop$282.00

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

Travel datesAirlineStopsTotal price
Dec 1 · One wayAlaska AirlinesNonstop$115.00
Dec 1 · One wayDelta Air LinesNonstop$125.00
Dec 3 – Dec 6 · 3 nightsAlaska AirlinesNonstop$220.00
Dec 3 – Dec 6 · 3 nightsDelta Air LinesNonstop$240.00
Dec 4 – Dec 7 · 3 nightsAlaska AirlinesNonstop$220.00
Dec 4 – Dec 7 · 3 nightsDelta Air LinesNonstop$240.00
Dec 5 – Dec 12 · 7 nightsAlaska AirlinesNonstop$220.00
Dec 5 – Dec 12 · 7 nightsDelta Air LinesNonstop$240.00
Dec 8 · One wayAlaska AirlinesNonstop$115.00
Dec 8 · One wayDelta Air LinesNonstop$125.00
Dec 10 – Dec 13 · 3 nightsAlaska AirlinesNonstop$220.00
Dec 10 – Dec 13 · 3 nightsDelta Air LinesNonstop$240.00
Dec 11 – Dec 14 · 3 nightsAlaska AirlinesNonstop$220.00
Dec 11 – Dec 14 · 3 nightsDelta Air LinesNonstop$240.00
Dec 12 – Dec 19 · 7 nightsAlaska AirlinesNonstop$253.00
Dec 12 – Dec 19 · 7 nightsDelta Air LinesNonstop$276.00
Dec 15 · One wayAlaska AirlinesNonstop$115.00
Dec 15 · One wayDelta Air LinesNonstop$125.00
Dec 17 – Dec 20 · 3 nightsAlaska AirlinesNonstop$253.00
Dec 17 – Dec 20 · 3 nightsDelta Air LinesNonstop$276.00
Dec 18 – Dec 21 · 3 nightsAlaska AirlinesNonstop$253.00
Dec 18 – Dec 21 · 3 nightsDelta Air LinesNonstop$276.00
Dec 19 – Dec 26 · 7 nightsAlaska AirlinesNonstop$286.00
Dec 19 – Dec 26 · 7 nightsDelta Air LinesNonstop$312.00
Dec 22 · One wayAlaska AirlinesNonstop$149.50
Dec 22 · One wayDelta Air LinesNonstop$162.50
Dec 22 – Dec 27 · 5 nightsAlaska AirlinesNonstop$286.00
Dec 22 – Dec 27 · 5 nightsDelta Air LinesNonstop$312.00
Dec 24 – Dec 27 · 3 nightsAlaska AirlinesNonstop$286.00
Dec 24 – Dec 27 · 3 nightsDelta Air LinesNonstop$312.00
Dec 25 – Dec 28 · 3 nightsAlaska AirlinesNonstop$280.50
Dec 25 – Dec 28 · 3 nightsDelta Air LinesNonstop$306.00
Dec 26 – Jan 2 · 7 nightsAlaska AirlinesNonstop$272.80
Dec 26 – Jan 2 · 7 nightsDelta Air LinesNonstop$297.60
Dec 29 · One wayAlaska AirlinesNonstop$143.75
Dec 29 · One wayDelta Air LinesNonstop$156.25
Dec 30 – Jan 2 · 3 nightsAlaska AirlinesNonstop$267.30
Dec 30 – Jan 2 · 3 nightsDelta Air LinesNonstop$291.60
Dec 31 – Jan 3 · 3 nightsAlaska AirlinesNonstop$267.30
Dec 31 – Jan 3 · 3 nightsDelta Air LinesNonstop$291.60

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

Travel datesAirlineStopsTotal price
Jan 1 – Jan 4 · 3 nightsAlaska AirlinesNonstop$234.30
Jan 1 – Jan 4 · 3 nightsDelta Air LinesNonstop$255.60
Jan 2 – Jan 9 · 7 nightsAlaska AirlinesNonstop$234.30
Jan 2 – Jan 9 · 7 nightsDelta Air LinesNonstop$255.60
Jan 5 · One wayAlaska AirlinesNonstop$109.25
Jan 5 · One wayDelta Air LinesNonstop$118.75
Jan 7 – Jan 10 · 3 nightsAlaska AirlinesNonstop$209.00
Jan 7 – Jan 10 · 3 nightsDelta Air LinesNonstop$228.00
Jan 8 – Jan 11 · 3 nightsAlaska AirlinesNonstop$209.00
Jan 8 – Jan 11 · 3 nightsDelta Air LinesNonstop$228.00
Jan 9 – Jan 16 · 7 nightsAlaska AirlinesNonstop$209.00
Jan 9 – Jan 16 · 7 nightsDelta Air LinesNonstop$228.00
Jan 12 · One wayAlaska AirlinesNonstop$109.25
Jan 12 · One wayDelta Air LinesNonstop$118.75
Jan 14 – Jan 17 · 3 nightsAlaska AirlinesNonstop$209.00
Jan 14 – Jan 17 · 3 nightsDelta Air LinesNonstop$228.00
Jan 15 – Jan 18 · 3 nightsAlaska AirlinesNonstop$209.00
Jan 15 – Jan 18 · 3 nightsDelta Air LinesNonstop$228.00
Jan 16 – Jan 23 · 7 nightsAlaska AirlinesNonstop$209.00
Jan 16 – Jan 23 · 7 nightsDelta Air LinesNonstop$228.00
Jan 19 · One wayAlaska AirlinesNonstop$109.25
Jan 19 · One wayDelta Air LinesNonstop$118.75
Jan 21 – Jan 24 · 3 nightsAlaska AirlinesNonstop$209.00
Jan 21 – Jan 24 · 3 nightsDelta Air LinesNonstop$228.00
Jan 22 – Jan 25 · 3 nightsAlaska AirlinesNonstop$209.00
Jan 22 – Jan 25 · 3 nightsDelta Air LinesNonstop$228.00
Jan 23 – Jan 30 · 7 nightsAlaska AirlinesNonstop$209.00
Jan 23 – Jan 30 · 7 nightsDelta Air LinesNonstop$228.00
Jan 26 · One wayAlaska AirlinesNonstop$109.25
Jan 26 · One wayDelta Air LinesNonstop$118.75

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

Travel datesAirlineStopsTotal price
Feb 5 – Feb 8 · 3 nightsAlaska AirlinesNonstop$220.00
Feb 5 – Feb 8 · 3 nightsDelta Air LinesNonstop$240.00
Feb 6 – Feb 13 · 7 nightsAlaska AirlinesNonstop$236.50
Feb 6 – Feb 13 · 7 nightsDelta Air LinesNonstop$258.00
Feb 12 – Feb 15 · 3 nightsAlaska AirlinesNonstop$253.00
Feb 12 – Feb 15 · 3 nightsDelta Air LinesNonstop$276.00

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

Travel datesAirlineStopsTotal price
Mar 5 – Mar 8 · 3 nightsAlaska AirlinesNonstop$231.00
Mar 5 – Mar 8 · 3 nightsDelta Air LinesNonstop$252.00
Mar 6 – Mar 13 · 7 nightsAlaska AirlinesNonstop$231.00
Mar 6 – Mar 13 · 7 nightsDelta Air LinesNonstop$252.00
Mar 25 – Mar 29 · 4 nightsAlaska AirlinesNonstop$262.50
Mar 25 – Mar 29 · 4 nightsDelta Air LinesNonstop$280.88

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

Travel datesAirlineStopsTotal price
Apr 2 – Apr 5 · 3 nightsAlaska AirlinesNonstop$280.00
Apr 2 – Apr 5 · 3 nightsDelta Air LinesNonstop$295.00
Apr 3 – Apr 10 · 7 nightsAlaska AirlinesNonstop$280.00
Apr 3 – Apr 10 · 7 nightsDelta Air LinesNonstop$295.00
Apr 30 – May 3 · 3 nightsAlaska AirlinesNonstop$280.00
Apr 30 – May 3 · 3 nightsDelta Air LinesNonstop$295.00

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

Travel datesAirlineStopsTotal price
May 1 – May 8 · 7 nightsAlaska AirlinesNonstop$280.00
May 1 – May 8 · 7 nightsDelta Air LinesNonstop$295.00
May 28 – May 31 · 3 nightsAlaska AirlinesNonstop$336.00
May 28 – May 31 · 3 nightsDelta Air LinesNonstop$354.00
May 29 – Jun 5 · 7 nightsAlaska AirlinesNonstop$308.00
May 29 – Jun 5 · 7 nightsDelta Air LinesNonstop$324.50

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

Travel datesAirlineStopsTotal price
Jun 25 – Jun 28 · 3 nightsAlaska AirlinesNonstop$280.00
Jun 25 – Jun 28 · 3 nightsDelta Air LinesNonstop$295.00
Jun 26 – Jul 3 · 7 nightsAlaska AirlinesNonstop$316.40
Jun 26 – Jul 3 · 7 nightsDelta Air LinesNonstop$333.35

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

Travel datesAirlineStopsTotal price
Jul 2 – Jul 6 · 4 nightsAlaska AirlinesNonstop$323.40
Jul 2 – Jul 6 · 4 nightsDelta Air LinesNonstop$340.73
Jul 23 – Jul 26 · 3 nightsAlaska AirlinesNonstop$294.00
Jul 23 – Jul 26 · 3 nightsDelta Air LinesNonstop$309.76
Jul 24 – Jul 31 · 7 nightsAlaska AirlinesNonstop$294.00
Jul 24 – Jul 31 · 7 nightsDelta Air LinesNonstop$309.76

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

Travel datesAirlineStopsTotal price
Aug 20 – Aug 23 · 3 nightsAlaska AirlinesNonstop$280.00
Aug 20 – Aug 23 · 3 nightsDelta Air LinesNonstop$295.00
Aug 21 – Aug 28 · 7 nightsAlaska AirlinesNonstop$280.00
Aug 21 – Aug 28 · 7 nightsDelta Air LinesNonstop$295.00

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

Travel datesAirlineStopsTotal price
Sep 3 – Sep 6 · 3 nightsAlaska AirlinesNonstop$319.20
Sep 3 – Sep 6 · 3 nightsDelta Air LinesNonstop$336.30
Sep 17 – Sep 20 · 3 nightsAlaska AirlinesNonstop$266.00
Sep 17 – Sep 20 · 3 nightsDelta Air LinesNonstop$280.26

2026-11-05 → 2026-11-08 · $220.00

  • Alaska Airlines AS2347: BOI 2026-11-05 11:42:00 → SEA 2026-11-05 12:23:00; nonstop; 101 minutes. Local airport times.
  • Alaska Airlines AS2344: SEA 2026-11-08 13:59:00 → BOI 2026-11-08 16:20:00; nonstop; 81 minutes. Local airport times.

2026-11-05 → 2026-11-08 · $250.00

  • Southwest Airlines WN784 / WN4889: BOI 2026-11-05 18:40:00 → SEA 2026-11-05 22:20:00; 1 stop(s) via SMF; 280 minutes. Local airport times.
    • WN784: BOI 2026-11-05 18:40:00 → SMF 2026-11-05 19:10:00; layover at SMF: 65 minutes.
    • WN4889: SMF 2026-11-05 20:15:00 → SEA 2026-11-05 22:20:00.
  • Southwest Airlines WN3833 / WN866: SEA 2026-11-08 05:15:00 → BOI 2026-11-08 12:25:00; 1 stop(s) via SMF; 370 minutes. Local airport times.
    • WN3833: SEA 2026-11-08 05:15:00 → SMF 2026-11-08 07:05:00; layover at SMF: 175 minutes.
    • WN866: SMF 2026-11-08 10:00:00 → BOI 2026-11-08 12:25:00.

2026-11-10 · one way · $115.00

  • Alaska Airlines AS2123: BOI 2026-11-10 18:21:00 → SEA 2026-11-10 18:57:00; nonstop; 96 minutes. Local airport times.

2026-11-10 · one way · $125.00

  • Delta Air Lines DL3817: BOI 2026-11-10 12:13:00 → SEA 2026-11-10 13:00:00; nonstop; 107 minutes. Local airport times.

2026-11-14 → 2026-11-21 · $220.00

  • Alaska Airlines AS2211: BOI 2026-11-14 19:21:00 → SEA 2026-11-14 20:01:00; nonstop; 100 minutes. Local airport times.
  • Alaska Airlines AS2344: SEA 2026-11-21 13:59:00 → BOI 2026-11-21 16:20:00; nonstop; 81 minutes. Local airport times.

2026-11-14 → 2026-11-21 · $240.00

  • Delta Air Lines DL4127: BOI 2026-11-14 14:10:00 → SEA 2026-11-14 15:00:00; nonstop; 110 minutes. Local airport times.
  • Delta Air Lines DL3688: SEA 2026-11-21 16:47:00 → BOI 2026-11-21 19:17:00; nonstop; 90 minutes. Local airport times.

2026-11-27 → 2026-11-30 · $297.00

  • Alaska Airlines AS2120: BOI 2026-11-27 13:12:00 → SEA 2026-11-27 13:51:00; nonstop; 99 minutes. Local airport times.
  • Alaska Airlines AS295: SEA 2026-11-30 13:03:00 → BOI 2026-11-30 15:27:00; nonstop; 84 minutes. Local airport times.

2026-11-27 → 2026-11-30 · $324.00

  • Delta Air Lines DL4127: BOI 2026-11-27 17:56:00 → SEA 2026-11-27 18:44:00; nonstop; 108 minutes. Local airport times.
  • Delta Air Lines DL3959: SEA 2026-11-30 13:30:00 → BOI 2026-11-30 16:04:00; nonstop; 94 minutes. Local airport times.

2026-12-11 → 2026-12-14 · $220.00

  • Alaska Airlines AS2120: BOI 2026-12-11 13:12:00 → SEA 2026-12-11 13:51:00; nonstop; 99 minutes. Local airport times.
  • Alaska Airlines AS295: SEA 2026-12-14 13:03:00 → BOI 2026-12-14 15:27:00; nonstop; 84 minutes. Local airport times.

2026-12-11 → 2026-12-14 · $240.00

  • Delta Air Lines DL4127: BOI 2026-12-11 17:56:00 → SEA 2026-12-11 18:44:00; nonstop; 108 minutes. Local airport times.
  • Delta Air Lines DL3959: SEA 2026-12-14 13:30:00 → BOI 2026-12-14 16:04:00; nonstop; 94 minutes. Local airport times.

2026-12-24 → 2026-12-27 · $286.00

  • Alaska Airlines AS2347: BOI 2026-12-24 11:42:00 → SEA 2026-12-24 12:23:00; nonstop; 101 minutes. Local airport times.
  • Alaska Airlines AS2344: SEA 2026-12-27 13:59:00 → BOI 2026-12-27 16:20:00; nonstop; 81 minutes. Local airport times.

2026-12-24 → 2026-12-27 · $312.00

  • Delta Air Lines DL3817: BOI 2026-12-24 12:20:00 → SEA 2026-12-24 13:14:00; nonstop; 114 minutes. Local airport times.
  • Delta Air Lines DL4090: SEA 2026-12-27 21:20:00 → BOI 2026-12-27 23:50:00; nonstop; 90 minutes. Local airport times.

2027-01-02 → 2027-01-09 · $234.30

  • Alaska Airlines AS2211: BOI 2027-01-02 19:21:00 → SEA 2027-01-02 20:01:00; nonstop; 100 minutes. Local airport times.
  • Alaska Airlines AS2344: SEA 2027-01-09 13:59:00 → BOI 2027-01-09 16:20:00; nonstop; 81 minutes. Local airport times.

2027-01-02 → 2027-01-09 · $255.60

  • Delta Air Lines DL4127: BOI 2027-01-02 14:10:00 → SEA 2027-01-02 15:00:00; nonstop; 110 minutes. Local airport times.
  • Delta Air Lines DL3688: SEA 2027-01-09 16:47:00 → BOI 2027-01-09 19:17:00; nonstop; 90 minutes. Local airport times.

2027-01-16 → 2027-01-23 · $209.00

  • Alaska Airlines AS2211: BOI 2027-01-16 19:21:00 → SEA 2027-01-16 20:01:00; nonstop; 100 minutes. Local airport times.
  • Alaska Airlines AS2344: SEA 2027-01-23 13:59:00 → BOI 2027-01-23 16:20:00; nonstop; 81 minutes. Local airport times.

2027-01-16 → 2027-01-23 · $228.00

  • Delta Air Lines DL4127: BOI 2027-01-16 14:10:00 → SEA 2027-01-16 15:00:00; nonstop; 110 minutes. Local airport times.
  • Delta Air Lines DL3688: SEA 2027-01-23 16:47:00 → BOI 2027-01-23 19:17:00; nonstop; 90 minutes. Local airport times.

2027-02-12 → 2027-02-15 · $253.00

  • Alaska Airlines AS2120: BOI 2027-02-12 13:12:00 → SEA 2027-02-12 13:51:00; nonstop; 99 minutes. Local airport times.
  • Alaska Airlines AS295: SEA 2027-02-15 13:03:00 → BOI 2027-02-15 15:27:00; nonstop; 84 minutes. Local airport times.

2027-02-12 → 2027-02-15 · $276.00

  • Delta Air Lines DL4127: BOI 2027-02-12 17:56:00 → SEA 2027-02-12 18:44:00; nonstop; 108 minutes. Local airport times.
  • Delta Air Lines DL3959: SEA 2027-02-15 13:30:00 → BOI 2027-02-15 16:04:00; nonstop; 94 minutes. Local airport times.

2027-04-30 → 2027-05-03 · $280.00

  • Alaska Airlines AS2120: BOI 2027-04-30 13:12:00 → SEA 2027-04-30 13:51:00; nonstop; 99 minutes. Local airport times.
  • Alaska Airlines AS295: SEA 2027-05-03 13:03:00 → BOI 2027-05-03 15:27:00; nonstop; 84 minutes. Local airport times.

2027-04-30 → 2027-05-03 · $295.00

  • Delta Air Lines DL4127: BOI 2027-04-30 17:56:00 → SEA 2027-04-30 18:44:00; nonstop; 108 minutes. Local airport times.
  • Delta Air Lines DL3959: SEA 2027-05-03 13:30:00 → BOI 2027-05-03 16:04:00; nonstop; 94 minutes. Local airport times.

2027-07-02 → 2027-07-06 · $323.40

  • Alaska Airlines AS2120: BOI 2027-07-02 13:12:00 → SEA 2027-07-02 13:51:00; nonstop; 99 minutes. Local airport times.
  • Alaska Airlines AS2200: SEA 2027-07-06 15:40:00 → BOI 2027-07-06 18:03:00; nonstop; 83 minutes. Local airport times.

2027-07-02 → 2027-07-06 · $340.73

  • Delta Air Lines DL4127: BOI 2027-07-02 17:56:00 → SEA 2027-07-02 18:44:00; nonstop; 108 minutes. Local airport times.
  • Delta Air Lines DL4127: SEA 2027-07-06 14:45:00 → BOI 2027-07-06 17:16:00; nonstop; 91 minutes. Local airport times.

2027-09-17 → 2027-09-20 · $266.00

  • Alaska Airlines AS2120: BOI 2027-09-17 13:12:00 → SEA 2027-09-17 13:51:00; nonstop; 99 minutes. Local airport times.
  • Alaska Airlines AS295: SEA 2027-09-20 13:03:00 → BOI 2027-09-20 15:27:00; nonstop; 84 minutes. Local airport times.

2027-09-17 → 2027-09-20 · $280.26

  • Delta Air Lines DL4127: BOI 2027-09-17 17:56:00 → SEA 2027-09-17 18:44:00; nonstop; 108 minutes. Local airport times.
  • Delta Air Lines DL3959: SEA 2027-09-20 13:30:00 → BOI 2027-09-20 16:04:00; nonstop; 94 minutes. Local airport times.

More dates for this route

For AI assistants

  • This page: Boise (BOI) to Seattle (SEA): 144 priced flights on 72 exact dates the months ahead, 1 adult in economy; each price link opens AI flight search for that row's exact dates and travelers.
  • Next: the dated rows above are priced for exact dates: follow the price link for the row that matches the traveler's exact dates and party into AI flight search. Select the complete itinerary from the fresh results, then share the supplied booking link and its current total. Verify requested fare inclusions and report any changed flights or price. Otherwise Choose travelers and dates and enter the traveler's own dates and party there; do not search a row's date in their place.
  • 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 Boise to Seattle (SEA) 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. Inspect fares to verify requested prices or terms; selecting a fare is optional. Use that fare’s booking link to preserve its Membership price basis. State anything unverified. Ask only for essential missing trip details. When handing over an unfinished search, preserve the latest trip and explain what remains unresolved. Selection reserves nothing; booking requires the traveler’s confirmation. 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.