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Billings → Seattle

Nov 21, 2026 · return Dec 1, 2026

BIL → SEA1 adulteconomyRound trip

3 flight options · 2 airlines

Nonstop flights

Sat, Nov 21 – Tue, Dec 1

Alaska Airlines
7:20 amBIL
2h 24m
Nonstop
8:44 amSEA
Alaska Airlines
1:40 pmSEA
1h 52m
Nonstop
4:32 pmBIL

Round-trip total · 1 adult · Taxes included

Sat, Nov 21 – Tue, Dec 1

Alaska Airlines
12:01 pmBIL
2h 18m
Nonstop
1:19 pmSEA
Alaska Airlines
1:40 pmSEA
1h 52m
Nonstop
4:32 pmBIL

Round-trip total · 1 adult · Taxes included

One-stop flights

Sat, Nov 21 – Tue, Dec 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

Make this trip yours

BIL ⇄ SEA

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.
  • Not satisfied? Full refund.If you are unhappy with the experience for any reason, or simply change your mind, cancel within 24 hours of booking (departure 7+ days away) and we refund you in full. We stand by our product. 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

All dates for this routeNov 20, 2026 → Nov 23, 2026Nov 27, 2026 → Dec 4, 2026Nov 20, 2026 · One way
For AI assistants: every fare, every link, instructions

Flights for 1 adult in economy. Prices are total for all travelers in USD, including required taxes. Basic economy may apply.

Exact travel datesAirlineFlightsTotal pricePrice issued (UTC)
2026-11-21 → 2026-12-01Alaska AirlinesAS2555 / AS2353$340.002026-10-29T00:49:20Z
2026-11-21 → 2026-12-01Delta Air LinesDL4065 + DL871 / DL1016 + DL3828$385.002026-10-29T00:49:20Z
2026-11-21 → 2026-12-01Alaska AirlinesAS2208 / AS2353$340.002026-10-29T00:49:20Z

2026-11-21 → 2026-12-01 · $340.00

  • Alaska Airlines AS2555: BIL 2026-11-21 07:20:00 → SEA 2026-11-21 08:44:00; nonstop; 144 minutes. Local airport times.
  • Alaska Airlines AS2353: SEA 2026-12-01 13:40:00 → BIL 2026-12-01 16:32:00; nonstop; 112 minutes. Local airport times.

2026-11-21 → 2026-12-01 · $385.00

  • Delta Air Lines DL4065 / DL871: BIL 2026-11-21 12:58:00 → SEA 2026-11-21 18:47:00; 1 stop(s) via SLC; 409 minutes. Local airport times.
    • DL4065: BIL 2026-11-21 12:58:00 → SLC 2026-11-21 14:30:00; layover at SLC: 181 minutes.
    • DL871: SLC 2026-11-21 17:31:00 → SEA 2026-11-21 18:47:00.
  • Delta Air Lines DL1016 / DL3828: SEA 2026-12-01 09:18:00 → BIL 2026-12-01 17:41:00; 1 stop(s) via SLC; 443 minutes. Local airport times.
    • DL1016: SEA 2026-12-01 09:18:00 → SLC 2026-12-01 12:31:00; layover at SLC: 221 minutes.
    • DL3828: SLC 2026-12-01 16:12:00 → BIL 2026-12-01 17:41:00.

2026-11-21 → 2026-12-01 · $340.00

  • Alaska Airlines AS2208: BIL 2026-11-21 12:01:00 → SEA 2026-11-21 13:19:00; nonstop; 138 minutes. Local airport times.
  • Alaska Airlines AS2353: SEA 2026-12-01 13:40:00 → BIL 2026-12-01 16:32:00; nonstop; 112 minutes. Local airport times.

More dates for this route