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Route overview: Billings to Seattle (SEA) flight deals

Billings → Seattle

Dec 28, 2026 · choose your return date

BIL → SEA1 adulteconomyOne way and round trips

30 flight options · 2 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.

December 2026

Dec 28, 2026 · One wayAlaska AirlinesNonstop$237.50 Dec 28, 2026 · One wayDelta Air LinesUp to 1 stop each way$268.75 Dec 28, 2026 – Dec 29, 2026 · 1 nightAlaska AirlinesNonstop$425.00 Dec 28, 2026 – Dec 29, 2026 · 1 nightDelta Air LinesUp to 1 stop each way$481.26 Dec 28, 2026 – Dec 30, 2026 · 2 nightsAlaska AirlinesNonstop$425.00 Dec 28, 2026 – Dec 30, 2026 · 2 nightsDelta Air LinesUp to 1 stop each way$481.26 Dec 28, 2026 – Dec 31, 2026 · 3 nightsAlaska AirlinesNonstop$425.00 Dec 28, 2026 – Dec 31, 2026 · 3 nightsDelta Air LinesUp to 1 stop each way$481.26 Dec 28, 2026 – Jan 1, 2027 · 4 nightsAlaska AirlinesNonstop$425.00 Dec 28, 2026 – Jan 1, 2027 · 4 nightsDelta Air LinesUp to 1 stop each way$481.26 Dec 28, 2026 – Jan 2, 2027 · 5 nightsAlaska AirlinesNonstop$425.00 Dec 28, 2026 – Jan 2, 2027 · 5 nightsDelta Air LinesUp to 1 stop each way$481.26 Dec 28, 2026 – Jan 3, 2027 · 6 nightsAlaska AirlinesNonstop$425.00 Dec 28, 2026 – Jan 3, 2027 · 6 nightsDelta Air LinesUp to 1 stop each way$481.26 Dec 28, 2026 – Jan 4, 2027 · 7 nightsAlaska AirlinesNonstop$425.00 Dec 28, 2026 – Jan 4, 2027 · 7 nightsDelta Air LinesUp to 1 stop each way$481.26 Dec 28, 2026 – Jan 5, 2027 · 8 nightsAlaska AirlinesNonstop$382.50 Dec 28, 2026 – Jan 5, 2027 · 8 nightsDelta Air LinesUp to 1 stop each way$433.13 Dec 28, 2026 – Jan 6, 2027 · 9 nightsAlaska AirlinesNonstop$382.50 Dec 28, 2026 – Jan 6, 2027 · 9 nightsDelta Air LinesUp to 1 stop each way$433.13 Dec 28, 2026 – Jan 7, 2027 · 10 nightsAlaska AirlinesNonstop$382.50 Dec 28, 2026 – Jan 7, 2027 · 10 nightsDelta Air LinesUp to 1 stop each way$433.13 Dec 28, 2026 – Jan 8, 2027 · 11 nightsAlaska AirlinesNonstop$382.50 Dec 28, 2026 – Jan 8, 2027 · 11 nightsDelta Air LinesUp to 1 stop each way$433.13 Dec 28, 2026 – Jan 9, 2027 · 12 nightsAlaska AirlinesNonstop$382.50 Dec 28, 2026 – Jan 9, 2027 · 12 nightsDelta Air LinesUp to 1 stop each way$433.13 Dec 28, 2026 – Jan 10, 2027 · 13 nightsAlaska AirlinesNonstop$382.50 Dec 28, 2026 – Jan 10, 2027 · 13 nightsDelta Air LinesUp to 1 stop each way$433.13 Dec 28, 2026 – Jan 11, 2027 · 14 nightsAlaska AirlinesNonstop$382.50 Dec 28, 2026 – Jan 11, 2027 · 14 nightsDelta Air LinesUp to 1 stop each way$433.13

Flights for your trip

  1. Mon, Dec 28 · One way

    Alaska Airlines
    5:12 pmBIL
    2h 13m
    Nonstop
    6:25 pmSEA

    One-way total · 1 adult · Taxes included

  2. Mon, Dec 28 · One way

    Delta Air Lines
    12:58 pmBIL
    6h 49m
    SLC · 3h 1m
    6:47 pmSEA

    One-way total · 1 adult · Taxes included

  3. Mon, Dec 28 – Tue, Dec 29

    Alaska Airlines
    5:12 pmBIL
    2h 13m
    Nonstop
    6:25 pmSEA
    Alaska Airlines
    1:40 pmSEA
    1h 52m
    Nonstop
    4:32 pmBIL

    Round-trip total · 1 adult · Taxes included

  4. Mon, Dec 28 – Tue, Dec 29

    Delta Air Lines
    12:58 pmBIL
    6h 49m
    SLC · 3h 1m
    6:47 pmSEA
    Delta Air Lines
    9:18 amSEA
    7h 23m
    SLC · 3h 41m
    5:41 pmBIL

    Round-trip total · 1 adult · Taxes included

  5. Mon, Dec 28 – Wed, Dec 30

    Alaska Airlines
    5:12 pmBIL
    2h 13m
    Nonstop
    6:25 pmSEA
    Alaska Airlines
    1:40 pmSEA
    1h 52m
    Nonstop
    4:32 pmBIL

    Round-trip total · 1 adult · Taxes included

  6. Mon, Dec 28 – Wed, Dec 30

    Delta Air Lines
    12:58 pmBIL
    6h 49m
    SLC · 3h 1m
    6:47 pmSEA
    Delta Air Lines
    9:18 amSEA
    7h 23m
    SLC · 3h 41m
    5:41 pmBIL

    Round-trip total · 1 adult · Taxes included

  7. Mon, Dec 28 – Thu, Dec 31

    Alaska Airlines
    5:12 pmBIL
    2h 13m
    Nonstop
    6:25 pmSEA
    Alaska Airlines
    1:40 pmSEA
    1h 52m
    Nonstop
    4:32 pmBIL

    Round-trip total · 1 adult · Taxes included

  8. Mon, Dec 28 – Thu, Dec 31

    Delta Air Lines
    12:58 pmBIL
    6h 49m
    SLC · 3h 1m
    6:47 pmSEA
    Delta Air Lines
    9:18 amSEA
    7h 23m
    SLC · 3h 41m
    5:41 pmBIL

    Round-trip total · 1 adult · Taxes included

  9. Mon, Dec 28 – Fri, Jan 1

    Alaska Airlines
    5:12 pmBIL
    2h 13m
    Nonstop
    6:25 pmSEA
    Alaska Airlines
    8:04 pmSEA
    1h 54m
    Nonstop
    10:58 pmBIL

    Round-trip total · 1 adult · Taxes included

  10. Mon, Dec 28 – Fri, Jan 1

    Delta Air Lines
    12:58 pmBIL
    6h 49m
    SLC · 3h 1m
    6:47 pmSEA
    Delta Air Lines
    9:18 amSEA
    7h 23m
    SLC · 3h 41m
    5:41 pmBIL

    Round-trip total · 1 adult · Taxes included

  11. Mon, Dec 28 – Sun, Jan 3

    Alaska Airlines
    5:12 pmBIL
    2h 13m
    Nonstop
    6:25 pmSEA
    Alaska Airlines
    9:06 pmSEA
    1h 52m
    Nonstop
    11:58 pmBIL

    Round-trip total · 1 adult · Taxes included

  12. Mon, Dec 28 – Sun, Jan 3

    Delta Air Lines
    12:58 pmBIL
    6h 49m
    SLC · 3h 1m
    6:47 pmSEA
    Delta Air Lines
    9:18 amSEA
    7h 23m
    SLC · 3h 41m
    5:41 pmBIL

    Round-trip total · 1 adult · Taxes included

  13. Mon, Dec 28 – Mon, Jan 4

    Alaska Airlines
    5:12 pmBIL
    2h 13m
    Nonstop
    6:25 pmSEA
    Alaska Airlines
    1:40 pmSEA
    1h 52m
    Nonstop
    4:32 pmBIL

    Round-trip total · 1 adult · Taxes included

  14. Mon, Dec 28 – Mon, Jan 4

    Delta Air Lines
    12:58 pmBIL
    6h 49m
    SLC · 3h 1m
    6:47 pmSEA
    Delta Air Lines
    9:18 amSEA
    7h 23m
    SLC · 3h 41m
    5:41 pmBIL

    Round-trip total · 1 adult · Taxes included

  15. Mon, Dec 28 – Tue, Jan 5

    Alaska Airlines
    5:12 pmBIL
    2h 13m
    Nonstop
    6:25 pmSEA
    Alaska Airlines
    1:40 pmSEA
    1h 52m
    Nonstop
    4:32 pmBIL

    Round-trip total · 1 adult · Taxes included

  16. Mon, Dec 28 – Tue, Jan 5

    Delta Air Lines
    12:58 pmBIL
    6h 49m
    SLC · 3h 1m
    6:47 pmSEA
    Delta Air Lines
    9:18 amSEA
    7h 23m
    SLC · 3h 41m
    5:41 pmBIL

    Round-trip total · 1 adult · Taxes included

  17. Mon, Dec 28 – Thu, Jan 7

    Alaska Airlines
    5:12 pmBIL
    2h 13m
    Nonstop
    6:25 pmSEA
    Alaska Airlines
    1:40 pmSEA
    1h 52m
    Nonstop
    4:32 pmBIL

    Round-trip total · 1 adult · Taxes included

  18. Mon, Dec 28 – Thu, Jan 7

    Delta Air Lines
    12:58 pmBIL
    6h 49m
    SLC · 3h 1m
    6:47 pmSEA
    Delta Air Lines
    9:18 amSEA
    7h 23m
    SLC · 3h 41m
    5:41 pmBIL

    Round-trip total · 1 adult · Taxes included

  19. Mon, Dec 28 – Fri, Jan 8

    Alaska Airlines
    5:12 pmBIL
    2h 13m
    Nonstop
    6:25 pmSEA
    Alaska Airlines
    8:04 pmSEA
    1h 54m
    Nonstop
    10:58 pmBIL

    Round-trip total · 1 adult · Taxes included

  20. Mon, Dec 28 – Fri, Jan 8

    Delta Air Lines
    12:58 pmBIL
    6h 49m
    SLC · 3h 1m
    6:47 pmSEA
    Delta Air Lines
    9:18 amSEA
    7h 23m
    SLC · 3h 41m
    5:41 pmBIL

    Round-trip total · 1 adult · Taxes included

  21. Mon, Dec 28 – Sat, Jan 9

    Alaska Airlines
    5:12 pmBIL
    2h 13m
    Nonstop
    6:25 pmSEA
    Alaska Airlines
    9:06 pmSEA
    1h 52m
    Nonstop
    11:58 pmBIL

    Round-trip total · 1 adult · Taxes included

  22. Mon, Dec 28 – Sat, Jan 9

    Delta Air Lines
    12:58 pmBIL
    6h 49m
    SLC · 3h 1m
    6:47 pmSEA
    Delta Air Lines
    9:18 amSEA
    7h 23m
    SLC · 3h 41m
    5:41 pmBIL

    Round-trip total · 1 adult · Taxes included

  23. Mon, Dec 28 – Mon, Jan 11

    Alaska Airlines
    5:12 pmBIL
    2h 13m
    Nonstop
    6:25 pmSEA
    Alaska Airlines
    1:40 pmSEA
    1h 52m
    Nonstop
    4:32 pmBIL

    Round-trip total · 1 adult · Taxes included

  24. Mon, Dec 28 – Mon, Jan 11

    Delta Air Lines
    12:58 pmBIL
    6h 49m
    SLC · 3h 1m
    6:47 pmSEA
    Delta Air Lines
    9:18 amSEA
    7h 23m
    SLC · 3h 41m
    5:41 pmBIL

    Round-trip total · 1 adult · Taxes included

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BIL ⇄ SEA

Economy

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Explore this route

All dates for this routeDec 27, 2026 · Return optionsDec 29, 2026 · Return optionsHotels in Seattle with Axel
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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. To book or select flights, follow that row's price link; it keeps the exact dates and travelers.

Exact travel datesAirlineFlightsTotal pricePrice issued (UTC)
2026-12-28 · one wayAlaska AirlinesAS2354Axel-exclusive $237.502026-10-29T00:49:20Z
2026-12-28 · one wayDelta Air LinesDL4065 + DL871Axel-exclusive $268.752026-10-29T00:49:20Z
2026-12-28 → 2026-12-29Alaska AirlinesAS2354 / AS2353Axel-exclusive $425.002026-10-29T00:49:20Z
2026-12-28 → 2026-12-29Delta Air LinesDL4065 + DL871 / DL1016 + DL3828Axel-exclusive $481.262026-10-29T00:49:20Z
2026-12-28 → 2026-12-30Alaska AirlinesAS2354 / AS2353Axel-exclusive $425.002026-10-29T00:49:20Z
2026-12-28 → 2026-12-30Delta Air LinesDL4065 + DL871 / DL1016 + DL3828Axel-exclusive $481.262026-10-29T00:49:20Z
2026-12-28 → 2026-12-31Alaska AirlinesAS2354 / AS2353Axel-exclusive $425.002026-10-29T00:49:20Z
2026-12-28 → 2026-12-31Delta Air LinesDL4065 + DL871 / DL1016 + DL3828Axel-exclusive $481.262026-10-29T00:49:20Z
2026-12-28 → 2027-01-01Alaska AirlinesAS2354 / AS2457Axel-exclusive $425.002026-10-29T00:49:20Z
2026-12-28 → 2027-01-01Delta Air LinesDL4065 + DL871 / DL1016 + DL3828Axel-exclusive $481.262026-10-29T00:49:20Z
2026-12-28 → 2027-01-02Alaska AirlinesAS2354 / AS2457Axel-exclusive $425.002026-10-29T00:49:20Z
2026-12-28 → 2027-01-02Delta Air LinesDL4065 + DL871 / DL1016 + DL3828Axel-exclusive $481.262026-10-29T00:49:20Z
2026-12-28 → 2027-01-03Alaska AirlinesAS2354 / AS2457Axel-exclusive $425.002026-10-29T00:49:20Z
2026-12-28 → 2027-01-03Delta Air LinesDL4065 + DL871 / DL1016 + DL3828Axel-exclusive $481.262026-10-29T00:49:20Z
2026-12-28 → 2027-01-04Alaska AirlinesAS2354 / AS2353Axel-exclusive $425.002026-10-29T00:49:20Z
2026-12-28 → 2027-01-04Delta Air LinesDL4065 + DL871 / DL1016 + DL3828Axel-exclusive $481.262026-10-29T00:49:20Z
2026-12-28 → 2027-01-05Alaska AirlinesAS2354 / AS2353Axel-exclusive $382.502026-10-29T00:49:20Z
2026-12-28 → 2027-01-05Delta Air LinesDL4065 + DL871 / DL1016 + DL3828Axel-exclusive $433.132026-10-29T00:49:20Z
2026-12-28 → 2027-01-06Alaska AirlinesAS2354 / AS2353Axel-exclusive $382.502026-10-29T00:49:20Z
2026-12-28 → 2027-01-06Delta Air LinesDL4065 + DL871 / DL1016 + DL3828Axel-exclusive $433.132026-10-29T00:49:20Z
2026-12-28 → 2027-01-07Alaska AirlinesAS2354 / AS2353Axel-exclusive $382.502026-10-29T00:49:20Z
2026-12-28 → 2027-01-07Delta Air LinesDL4065 + DL871 / DL1016 + DL3828Axel-exclusive $433.132026-10-29T00:49:20Z
2026-12-28 → 2027-01-08Alaska AirlinesAS2354 / AS2457Axel-exclusive $382.502026-10-29T00:49:20Z
2026-12-28 → 2027-01-08Delta Air LinesDL4065 + DL871 / DL1016 + DL3828Axel-exclusive $433.132026-10-29T00:49:20Z
2026-12-28 → 2027-01-09Alaska AirlinesAS2354 / AS2457Axel-exclusive $382.502026-10-29T00:49:20Z
2026-12-28 → 2027-01-09Delta Air LinesDL4065 + DL871 / DL1016 + DL3828Axel-exclusive $433.132026-10-29T00:49:20Z
2026-12-28 → 2027-01-10Alaska AirlinesAS2354 / AS2457Axel-exclusive $382.502026-10-29T00:49:20Z
2026-12-28 → 2027-01-10Delta Air LinesDL4065 + DL871 / DL1016 + DL3828Axel-exclusive $433.132026-10-29T00:49:20Z
2026-12-28 → 2027-01-11Alaska AirlinesAS2354 / AS2353Axel-exclusive $382.502026-10-29T00:49:20Z
2026-12-28 → 2027-01-11Delta Air LinesDL4065 + DL871 / DL1016 + DL3828Axel-exclusive $433.132026-10-29T00:49:20Z

Route overview: Billings to Seattle (SEA) flight deals

2026-12-28 · one way · Axel-exclusive $237.50

  • Alaska Airlines AS2354: BIL 2026-12-28 17:12:00 → SEA 2026-12-28 18:25:00; nonstop; 133 minutes. Local airport times.

2026-12-28 · one way · Axel-exclusive $268.75

  • Delta Air Lines DL4065 / DL871: BIL 2026-12-28 12:58:00 → SEA 2026-12-28 18:47:00; 1 stop(s) via SLC; 409 minutes. Local airport times.
    • DL4065: BIL 2026-12-28 12:58:00 → SLC 2026-12-28 14:30:00; layover at SLC: 181 minutes.
    • DL871: SLC 2026-12-28 17:31:00 → SEA 2026-12-28 18:47:00.

2026-12-28 → 2026-12-29 · Axel-exclusive $425.00

  • Alaska Airlines AS2354: BIL 2026-12-28 17:12:00 → SEA 2026-12-28 18:25:00; nonstop; 133 minutes. Local airport times.
  • Alaska Airlines AS2353: SEA 2026-12-29 13:40:00 → BIL 2026-12-29 16:32:00; nonstop; 112 minutes. Local airport times.

2026-12-28 → 2026-12-29 · Axel-exclusive $481.26

  • Delta Air Lines DL4065 / DL871: BIL 2026-12-28 12:58:00 → SEA 2026-12-28 18:47:00; 1 stop(s) via SLC; 409 minutes. Local airport times.
    • DL4065: BIL 2026-12-28 12:58:00 → SLC 2026-12-28 14:30:00; layover at SLC: 181 minutes.
    • DL871: SLC 2026-12-28 17:31:00 → SEA 2026-12-28 18:47:00.
  • Delta Air Lines DL1016 / DL3828: SEA 2026-12-29 09:18:00 → BIL 2026-12-29 17:41:00; 1 stop(s) via SLC; 443 minutes. Local airport times.
    • DL1016: SEA 2026-12-29 09:18:00 → SLC 2026-12-29 12:31:00; layover at SLC: 221 minutes.
    • DL3828: SLC 2026-12-29 16:12:00 → BIL 2026-12-29 17:41:00.

2026-12-28 → 2026-12-30 · Axel-exclusive $425.00

  • Alaska Airlines AS2354: BIL 2026-12-28 17:12:00 → SEA 2026-12-28 18:25:00; nonstop; 133 minutes. Local airport times.
  • Alaska Airlines AS2353: SEA 2026-12-30 13:40:00 → BIL 2026-12-30 16:32:00; nonstop; 112 minutes. Local airport times.

2026-12-28 → 2026-12-30 · Axel-exclusive $481.26

  • Delta Air Lines DL4065 / DL871: BIL 2026-12-28 12:58:00 → SEA 2026-12-28 18:47:00; 1 stop(s) via SLC; 409 minutes. Local airport times.
    • DL4065: BIL 2026-12-28 12:58:00 → SLC 2026-12-28 14:30:00; layover at SLC: 181 minutes.
    • DL871: SLC 2026-12-28 17:31:00 → SEA 2026-12-28 18:47:00.
  • Delta Air Lines DL1016 / DL3828: SEA 2026-12-30 09:18:00 → BIL 2026-12-30 17:41:00; 1 stop(s) via SLC; 443 minutes. Local airport times.
    • DL1016: SEA 2026-12-30 09:18:00 → SLC 2026-12-30 12:31:00; layover at SLC: 221 minutes.
    • DL3828: SLC 2026-12-30 16:12:00 → BIL 2026-12-30 17:41:00.

2026-12-28 → 2026-12-31 · Axel-exclusive $425.00

  • Alaska Airlines AS2354: BIL 2026-12-28 17:12:00 → SEA 2026-12-28 18:25:00; nonstop; 133 minutes. Local airport times.
  • Alaska Airlines AS2353: SEA 2026-12-31 13:40:00 → BIL 2026-12-31 16:32:00; nonstop; 112 minutes. Local airport times.

2026-12-28 → 2026-12-31 · Axel-exclusive $481.26

  • Delta Air Lines DL4065 / DL871: BIL 2026-12-28 12:58:00 → SEA 2026-12-28 18:47:00; 1 stop(s) via SLC; 409 minutes. Local airport times.
    • DL4065: BIL 2026-12-28 12:58:00 → SLC 2026-12-28 14:30:00; layover at SLC: 181 minutes.
    • DL871: SLC 2026-12-28 17:31:00 → SEA 2026-12-28 18:47:00.
  • Delta Air Lines DL1016 / DL3828: SEA 2026-12-31 09:18:00 → BIL 2026-12-31 17:41:00; 1 stop(s) via SLC; 443 minutes. Local airport times.
    • DL1016: SEA 2026-12-31 09:18:00 → SLC 2026-12-31 12:31:00; layover at SLC: 221 minutes.
    • DL3828: SLC 2026-12-31 16:12:00 → BIL 2026-12-31 17:41:00.

2026-12-28 → 2027-01-01 · Axel-exclusive $425.00

  • Alaska Airlines AS2354: BIL 2026-12-28 17:12:00 → SEA 2026-12-28 18:25:00; nonstop; 133 minutes. Local airport times.
  • Alaska Airlines AS2457: SEA 2027-01-01 20:04:00 → BIL 2027-01-01 22:58:00; nonstop; 114 minutes. Local airport times.

2026-12-28 → 2027-01-01 · Axel-exclusive $481.26

  • Delta Air Lines DL4065 / DL871: BIL 2026-12-28 12:58:00 → SEA 2026-12-28 18:47:00; 1 stop(s) via SLC; 409 minutes. Local airport times.
    • DL4065: BIL 2026-12-28 12:58:00 → SLC 2026-12-28 14:30:00; layover at SLC: 181 minutes.
    • DL871: SLC 2026-12-28 17:31:00 → SEA 2026-12-28 18:47:00.
  • Delta Air Lines DL1016 / DL3828: SEA 2027-01-01 09:18:00 → BIL 2027-01-01 17:41:00; 1 stop(s) via SLC; 443 minutes. Local airport times.
    • DL1016: SEA 2027-01-01 09:18:00 → SLC 2027-01-01 12:31:00; layover at SLC: 221 minutes.
    • DL3828: SLC 2027-01-01 16:12:00 → BIL 2027-01-01 17:41:00.

2026-12-28 → 2027-01-03 · Axel-exclusive $425.00

  • Alaska Airlines AS2354: BIL 2026-12-28 17:12:00 → SEA 2026-12-28 18:25:00; nonstop; 133 minutes. Local airport times.
  • Alaska Airlines AS2457: SEA 2027-01-03 21:06:00 → BIL 2027-01-03 23:58:00; nonstop; 112 minutes. Local airport times.

2026-12-28 → 2027-01-03 · Axel-exclusive $481.26

  • Delta Air Lines DL4065 / DL871: BIL 2026-12-28 12:58:00 → SEA 2026-12-28 18:47:00; 1 stop(s) via SLC; 409 minutes. Local airport times.
    • DL4065: BIL 2026-12-28 12:58:00 → SLC 2026-12-28 14:30:00; layover at SLC: 181 minutes.
    • DL871: SLC 2026-12-28 17:31:00 → SEA 2026-12-28 18:47:00.
  • Delta Air Lines DL1016 / DL3828: SEA 2027-01-03 09:18:00 → BIL 2027-01-03 17:41:00; 1 stop(s) via SLC; 443 minutes. Local airport times.
    • DL1016: SEA 2027-01-03 09:18:00 → SLC 2027-01-03 12:31:00; layover at SLC: 221 minutes.
    • DL3828: SLC 2027-01-03 16:12:00 → BIL 2027-01-03 17:41:00.

2026-12-28 → 2027-01-04 · Axel-exclusive $425.00

  • Alaska Airlines AS2354: BIL 2026-12-28 17:12:00 → SEA 2026-12-28 18:25:00; nonstop; 133 minutes. Local airport times.
  • Alaska Airlines AS2353: SEA 2027-01-04 13:40:00 → BIL 2027-01-04 16:32:00; nonstop; 112 minutes. Local airport times.

2026-12-28 → 2027-01-04 · Axel-exclusive $481.26

  • Delta Air Lines DL4065 / DL871: BIL 2026-12-28 12:58:00 → SEA 2026-12-28 18:47:00; 1 stop(s) via SLC; 409 minutes. Local airport times.
    • DL4065: BIL 2026-12-28 12:58:00 → SLC 2026-12-28 14:30:00; layover at SLC: 181 minutes.
    • DL871: SLC 2026-12-28 17:31:00 → SEA 2026-12-28 18:47:00.
  • Delta Air Lines DL1016 / DL3828: SEA 2027-01-04 09:18:00 → BIL 2027-01-04 17:41:00; 1 stop(s) via SLC; 443 minutes. Local airport times.
    • DL1016: SEA 2027-01-04 09:18:00 → SLC 2027-01-04 12:31:00; layover at SLC: 221 minutes.
    • DL3828: SLC 2027-01-04 16:12:00 → BIL 2027-01-04 17:41:00.

2026-12-28 → 2027-01-05 · Axel-exclusive $382.50

  • Alaska Airlines AS2354: BIL 2026-12-28 17:12:00 → SEA 2026-12-28 18:25:00; nonstop; 133 minutes. Local airport times.
  • Alaska Airlines AS2353: SEA 2027-01-05 13:40:00 → BIL 2027-01-05 16:32:00; nonstop; 112 minutes. Local airport times.

2026-12-28 → 2027-01-05 · Axel-exclusive $433.13

  • Delta Air Lines DL4065 / DL871: BIL 2026-12-28 12:58:00 → SEA 2026-12-28 18:47:00; 1 stop(s) via SLC; 409 minutes. Local airport times.
    • DL4065: BIL 2026-12-28 12:58:00 → SLC 2026-12-28 14:30:00; layover at SLC: 181 minutes.
    • DL871: SLC 2026-12-28 17:31:00 → SEA 2026-12-28 18:47:00.
  • Delta Air Lines DL1016 / DL3828: SEA 2027-01-05 09:18:00 → BIL 2027-01-05 17:41:00; 1 stop(s) via SLC; 443 minutes. Local airport times.
    • DL1016: SEA 2027-01-05 09:18:00 → SLC 2027-01-05 12:31:00; layover at SLC: 221 minutes.
    • DL3828: SLC 2027-01-05 16:12:00 → BIL 2027-01-05 17:41:00.

2026-12-28 → 2027-01-07 · Axel-exclusive $382.50

  • Alaska Airlines AS2354: BIL 2026-12-28 17:12:00 → SEA 2026-12-28 18:25:00; nonstop; 133 minutes. Local airport times.
  • Alaska Airlines AS2353: SEA 2027-01-07 13:40:00 → BIL 2027-01-07 16:32:00; nonstop; 112 minutes. Local airport times.

2026-12-28 → 2027-01-07 · Axel-exclusive $433.13

  • Delta Air Lines DL4065 / DL871: BIL 2026-12-28 12:58:00 → SEA 2026-12-28 18:47:00; 1 stop(s) via SLC; 409 minutes. Local airport times.
    • DL4065: BIL 2026-12-28 12:58:00 → SLC 2026-12-28 14:30:00; layover at SLC: 181 minutes.
    • DL871: SLC 2026-12-28 17:31:00 → SEA 2026-12-28 18:47:00.
  • Delta Air Lines DL1016 / DL3828: SEA 2027-01-07 09:18:00 → BIL 2027-01-07 17:41:00; 1 stop(s) via SLC; 443 minutes. Local airport times.
    • DL1016: SEA 2027-01-07 09:18:00 → SLC 2027-01-07 12:31:00; layover at SLC: 221 minutes.
    • DL3828: SLC 2027-01-07 16:12:00 → BIL 2027-01-07 17:41:00.

2026-12-28 → 2027-01-08 · Axel-exclusive $382.50

  • Alaska Airlines AS2354: BIL 2026-12-28 17:12:00 → SEA 2026-12-28 18:25:00; nonstop; 133 minutes. Local airport times.
  • Alaska Airlines AS2457: SEA 2027-01-08 20:04:00 → BIL 2027-01-08 22:58:00; nonstop; 114 minutes. Local airport times.

2026-12-28 → 2027-01-08 · Axel-exclusive $433.13

  • Delta Air Lines DL4065 / DL871: BIL 2026-12-28 12:58:00 → SEA 2026-12-28 18:47:00; 1 stop(s) via SLC; 409 minutes. Local airport times.
    • DL4065: BIL 2026-12-28 12:58:00 → SLC 2026-12-28 14:30:00; layover at SLC: 181 minutes.
    • DL871: SLC 2026-12-28 17:31:00 → SEA 2026-12-28 18:47:00.
  • Delta Air Lines DL1016 / DL3828: SEA 2027-01-08 09:18:00 → BIL 2027-01-08 17:41:00; 1 stop(s) via SLC; 443 minutes. Local airport times.
    • DL1016: SEA 2027-01-08 09:18:00 → SLC 2027-01-08 12:31:00; layover at SLC: 221 minutes.
    • DL3828: SLC 2027-01-08 16:12:00 → BIL 2027-01-08 17:41:00.

2026-12-28 → 2027-01-09 · Axel-exclusive $382.50

  • Alaska Airlines AS2354: BIL 2026-12-28 17:12:00 → SEA 2026-12-28 18:25:00; nonstop; 133 minutes. Local airport times.
  • Alaska Airlines AS2457: SEA 2027-01-09 21:06:00 → BIL 2027-01-09 23:58:00; nonstop; 112 minutes. Local airport times.

2026-12-28 → 2027-01-09 · Axel-exclusive $433.13

  • Delta Air Lines DL4065 / DL871: BIL 2026-12-28 12:58:00 → SEA 2026-12-28 18:47:00; 1 stop(s) via SLC; 409 minutes. Local airport times.
    • DL4065: BIL 2026-12-28 12:58:00 → SLC 2026-12-28 14:30:00; layover at SLC: 181 minutes.
    • DL871: SLC 2026-12-28 17:31:00 → SEA 2026-12-28 18:47:00.
  • Delta Air Lines DL1016 / DL3828: SEA 2027-01-09 09:18:00 → BIL 2027-01-09 17:41:00; 1 stop(s) via SLC; 443 minutes. Local airport times.
    • DL1016: SEA 2027-01-09 09:18:00 → SLC 2027-01-09 12:31:00; layover at SLC: 221 minutes.
    • DL3828: SLC 2027-01-09 16:12:00 → BIL 2027-01-09 17:41:00.

2026-12-28 → 2027-01-11 · Axel-exclusive $382.50

  • Alaska Airlines AS2354: BIL 2026-12-28 17:12:00 → SEA 2026-12-28 18:25:00; nonstop; 133 minutes. Local airport times.
  • Alaska Airlines AS2353: SEA 2027-01-11 13:40:00 → BIL 2027-01-11 16:32:00; nonstop; 112 minutes. Local airport times.

2026-12-28 → 2027-01-11 · Axel-exclusive $433.13

  • Delta Air Lines DL4065 / DL871: BIL 2026-12-28 12:58:00 → SEA 2026-12-28 18:47:00; 1 stop(s) via SLC; 409 minutes. Local airport times.
    • DL4065: BIL 2026-12-28 12:58:00 → SLC 2026-12-28 14:30:00; layover at SLC: 181 minutes.
    • DL871: SLC 2026-12-28 17:31:00 → SEA 2026-12-28 18:47:00.
  • Delta Air Lines DL1016 / DL3828: SEA 2027-01-11 09:18:00 → BIL 2027-01-11 17:41:00; 1 stop(s) via SLC; 443 minutes. Local airport times.
    • DL1016: SEA 2027-01-11 09:18:00 → SLC 2027-01-11 12:31:00; layover at SLC: 221 minutes.
    • DL3828: SLC 2027-01-11 16:12:00 → BIL 2027-01-11 17:41:00.

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For AI assistants

  • This page: Billings (BIL) to Seattle (SEA) · Dec 28, 2026 · 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.
  • Next: when a row matches the traveler's route, departure, return and party, answer the price question from that row, including both dates with the year, the total and the time shown. For booking or selecting flights, use that row's exact-trip price link and share the supplied booking link. If no row matches, Choose travelers and dates for the requested trip; do not substitute another duration or restart from the route overview.
  • 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 Billings 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.