Boston (BOS) to Seattle (SEA), Jan 12–26, 2027: from $353 round trip

Boston (BOS) to Seattle (SEA), Jan 12–26, 2027: from $353 round trip on Axel, checked Oct 29, 2026. Lowest published fare: $353 round trip, Axel-exclusive, Sun Country Airlines / Alaska Airlines, 1 stop, Jan 12–26, 2027, 1 adult, economy, checked Oct 29, 2026. Flights for 1 adult in economy. Prices are total for all travelers in USD, including required taxes. Basic economy may apply.

See flights for these dates: each price link opens AI flight search for that row's exact dates and travelers. Select the complete itinerary there.

Exact travel dates	Airline	Flights	Times, duration, stops	Total price	Price issued (UTC)
2027-01-12 → 2027-01-26	Alaska Airlines	AS257 / AS460	18:19:00→22:00:00 6h 41m nonstop · 21:20:00→05:40:00 5h 20m nonstop	Axel-exclusive $410.00	2026-10-29T00:52:47Z
2027-01-12 → 2027-01-26	Delta Air Lines	DL797 / DL474	19:26:00→22:55:00 6h 29m nonstop · 15:45:00→00:02:00 5h 17m nonstop	Axel-exclusive $425.00	2026-10-29T00:52:47Z
2027-01-12 → 2027-01-26	Sun Country Airlines / Alaska Airlines	SY252 + SY285 / AS460	11:43:00→17:17:00 8h 34m 1 stop via MSP · 21:20:00→05:40:00 5h 20m nonstop	Axel-exclusive $352.50	2026-10-29T00:52:47Z
2027-01-12 → 2027-01-26	Southwest Airlines / Alaska Airlines	WN816 + WN3032 / AS460	17:55:00→23:35:00 8h 40m 1 stop via MDW · 21:20:00→05:40:00 5h 20m nonstop	Axel-exclusive $385.00	2026-10-29T00:52:47Z
2027-01-12 → 2027-01-26	United Airlines / Alaska Airlines	UA546 + UA2614 / AS460	15:42:00→21:49:00 9h 07m 1 stop via EWR · 21:20:00→05:40:00 5h 20m nonstop	Axel-exclusive $400.00	2026-10-29T00:52:47Z
2027-01-12 → 2027-01-26	Alaska Airlines	AS215 / AS460	09:00:00→12:37:00 6h 37m nonstop · 21:20:00→05:40:00 5h 20m nonstop	Axel-exclusive $410.00	2026-10-29T00:52:47Z
2027-01-12 → 2027-01-26	Delta Air Lines	DL332 / DL474	10:40:00→14:09:00 6h 29m nonstop · 15:45:00→00:02:00 5h 17m nonstop	Axel-exclusive $425.00	2026-10-29T00:52:47Z
2027-01-12 → 2027-01-26	Southwest Airlines / Alaska Airlines	WN1590 + WN3141 / AS460	16:40:00→22:50:00 9h 10m 1 stop via DEN · 21:20:00→05:40:00 5h 20m nonstop	Axel-exclusive $385.00	2026-10-29T00:52:47Z
2027-01-12 → 2027-01-26	Delta Air Lines	DL1019 + DL734 / DL474	05:30:00→11:09:00 8h 39m 1 stop via DTW · 15:45:00→00:02:00 5h 17m nonstop	Axel-exclusive $407.50	2026-10-29T00:52:47Z
2027-01-12 → 2027-01-26	Delta Air Lines	DL1127 + DL881 / DL474	15:05:00→20:49:00 8h 44m 1 stop via MSP · 15:45:00→00:02:00 5h 17m nonstop	Axel-exclusive $407.50	2026-10-29T00:52:47Z

Hotels in Seattle for these trips

Hotels: under a trip, hotels in Seattle 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.

Hotels in Seattle for these nights (Jan 12–26, 2027 · 14 nights · 2 adults, 1 room): 3★ The Maxwell Hotel - A Staypineapple Hotel · 4★ The Sound Hotel Seattle Belltown, Tapestry Collection by Hilton · 5★ Four Seasons Hotel Seattle

All hotels in Seattle

Route overview: Boston to Seattle (SEA) flight deals

2027-01-12 → 2027-01-26 · Axel-exclusive $410.00

Alaska Airlines AS257: BOS 2027-01-12 18:19:00 → SEA 2027-01-12 22:00:00; nonstop; 401 minutes. Local airport times.
Alaska Airlines AS460: SEA 2027-01-26 21:20:00 → BOS 2027-01-27 05:40:00; nonstop; 320 minutes. Local airport times.

2027-01-12 → 2027-01-26 · Axel-exclusive $425.00

Delta Air Lines DL797: BOS 2027-01-12 19:26:00 → SEA 2027-01-12 22:55:00; nonstop; 389 minutes. Local airport times.
Delta Air Lines DL474: SEA 2027-01-26 15:45:00 → BOS 2027-01-27 00:02:00; nonstop; 317 minutes. Local airport times.

2027-01-12 → 2027-01-26 · Axel-exclusive $352.50

Sun Country Airlines SY252 / SY285: BOS 2027-01-12 11:43:00 → SEA 2027-01-12 17:17:00; 1 stop(s) via MSP; 514 minutes. Local airport times.
- SY252: BOS 2027-01-12 11:43:00 → MSP 2027-01-12 14:01:00; layover at MSP: 84 minutes.
- SY285: MSP 2027-01-12 15:25:00 → SEA 2027-01-12 17:17:00.
Alaska Airlines AS460: SEA 2027-01-26 21:20:00 → BOS 2027-01-27 05:40:00; nonstop; 320 minutes. Local airport times.

2027-01-12 → 2027-01-26 · Axel-exclusive $385.00

Southwest Airlines WN816 / WN3032: BOS 2027-01-12 17:55:00 → SEA 2027-01-12 23:35:00; 1 stop(s) via MDW; 520 minutes. Local airport times.
- WN816: BOS 2027-01-12 17:55:00 → MDW 2027-01-12 19:40:00; layover at MDW: 65 minutes.
- WN3032: MDW 2027-01-12 20:45:00 → SEA 2027-01-12 23:35:00.
Alaska Airlines AS460: SEA 2027-01-26 21:20:00 → BOS 2027-01-27 05:40:00; nonstop; 320 minutes. Local airport times.

2027-01-12 → 2027-01-26 · Axel-exclusive $400.00

United Airlines UA546 / UA2614: BOS 2027-01-12 15:42:00 → SEA 2027-01-12 21:49:00; 1 stop(s) via EWR; 547 minutes. Local airport times.
- UA546: BOS 2027-01-12 15:42:00 → EWR 2027-01-12 17:08:00; layover at EWR: 77 minutes.
- UA2614: EWR 2027-01-12 18:25:00 → SEA 2027-01-12 21:49:00.
Alaska Airlines AS460: SEA 2027-01-26 21:20:00 → BOS 2027-01-27 05:40:00; nonstop; 320 minutes. Local airport times.

2027-01-12 → 2027-01-26 · Axel-exclusive $410.00

Alaska Airlines AS215: BOS 2027-01-12 09:00:00 → SEA 2027-01-12 12:37:00; nonstop; 397 minutes. Local airport times.
Alaska Airlines AS460: SEA 2027-01-26 21:20:00 → BOS 2027-01-27 05:40:00; nonstop; 320 minutes. Local airport times.

2027-01-12 → 2027-01-26 · Axel-exclusive $425.00

Delta Air Lines DL332: BOS 2027-01-12 10:40:00 → SEA 2027-01-12 14:09:00; nonstop; 389 minutes. Local airport times.
Delta Air Lines DL474: SEA 2027-01-26 15:45:00 → BOS 2027-01-27 00:02:00; nonstop; 317 minutes. Local airport times.

2027-01-12 → 2027-01-26 · Axel-exclusive $385.00

Southwest Airlines WN1590 / WN3141: BOS 2027-01-12 16:40:00 → SEA 2027-01-12 22:50:00; 1 stop(s) via DEN; 550 minutes. Local airport times.
- WN1590: BOS 2027-01-12 16:40:00 → DEN 2027-01-12 19:20:00; layover at DEN: 80 minutes.
- WN3141: DEN 2027-01-12 20:40:00 → SEA 2027-01-12 22:50:00.
Alaska Airlines AS460: SEA 2027-01-26 21:20:00 → BOS 2027-01-27 05:40:00; nonstop; 320 minutes. Local airport times.

2027-01-12 → 2027-01-26 · Axel-exclusive $407.50

Delta Air Lines DL1019 / DL734: BOS 2027-01-12 05:30:00 → SEA 2027-01-12 11:09:00; 1 stop(s) via DTW; 519 minutes. Local airport times.
- DL1019: BOS 2027-01-12 05:30:00 → DTW 2027-01-12 07:52:00; layover at DTW: 63 minutes.
- DL734: DTW 2027-01-12 08:55:00 → SEA 2027-01-12 11:09:00.
Delta Air Lines DL474: SEA 2027-01-26 15:45:00 → BOS 2027-01-27 00:02:00; nonstop; 317 minutes. Local airport times.

2027-01-12 → 2027-01-26 · Axel-exclusive $407.50

Delta Air Lines DL1127 / DL881: BOS 2027-01-12 15:05:00 → SEA 2027-01-12 20:49:00; 1 stop(s) via MSP; 524 minutes. Local airport times.
- DL1127: BOS 2027-01-12 15:05:00 → MSP 2027-01-12 17:25:00; layover at MSP: 81 minutes.
- DL881: MSP 2027-01-12 18:46:00 → SEA 2027-01-12 20:49:00.
Delta Air Lines DL474: SEA 2027-01-26 15:45:00 → BOS 2027-01-27 00:02:00; nonstop; 317 minutes. Local airport times.

Travelers: prices on this page are totals for 1 adult. For a different party, open this trip for 2 adults · 3 adults · 4 adults · 2 adults + 1 child · 2 adults + 2 children; each link opens AI flight search for these dates and those travelers, and the customer link to share comes from those results.

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This page: Boston (BOS) to Seattle (SEA) · Jan 12, 2027 · return Jan 26, 2027: 1 adult in economy, every priced fare with its flights, times and total, each with the time its price was issued. Under a trip, hotels in Seattle 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.
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