Seattle (SEA) to Boston (BOS) · Jan 31, 2027 · return Feb 5, 2027

Flights for 1 adult in economy. Prices are total for all travelers in USD, including required taxes. 1 checked bag per traveler included. 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.

Route overview: Seattle to Boston (BOS) flight deals

2027-01-31 → 2027-02-05 · Axel-exclusive $455.13

• Alaska Airlines AS460: SEA 2027-01-31 21:20:00 → BOS 2027-02-01 05:40:00; nonstop; 320 minutes. Local airport times.
• Alaska Airlines AS215: BOS 2027-02-05 09:00:00 → SEA 2027-02-05 12:37:00; nonstop; 397 minutes. Local airport times.

2027-01-31 → 2027-02-05 · Axel-exclusive $484.63

• Delta Air Lines DL876: SEA 2027-01-31 15:55:00 → BOS 2027-02-01 00:12:00; nonstop; 317 minutes. Local airport times.
• Delta Air Lines DL384: BOS 2027-02-05 07:50:00 → SEA 2027-02-05 11:21:00; nonstop; 391 minutes. Local airport times.

2027-01-31 → 2027-02-05 · Axel-exclusive $449.00

• American Airlines AA2203 / AA1874: SEA 2027-01-31 12:34:00 → BOS 2027-01-31 23:13:00; 1 stop(s) via PHL; 459 minutes. Local airport times.
  • AA2203: SEA 2027-01-31 12:34:00 → PHL 2027-01-31 20:35:00; layover at PHL: 75 minutes.
  • AA1874: PHL 2027-01-31 21:50:00 → BOS 2027-01-31 23:13:00.
• Delta Air Lines DL384: BOS 2027-02-05 07:50:00 → SEA 2027-02-05 11:21:00; nonstop; 391 minutes. Local airport times.

2027-01-31 → 2027-02-05 · Axel-exclusive $455.13

• Alaska Airlines AS460: SEA 2027-01-31 15:35:00 → BOS 2027-01-31 23:59:00; nonstop; 324 minutes. Local airport times.
• Alaska Airlines AS257: BOS 2027-02-05 18:22:00 → SEA 2027-02-05 22:00:00; nonstop; 398 minutes. Local airport times.

2027-01-31 → 2027-02-05 · Axel-exclusive $484.63

• Delta Air Lines DL459: SEA 2027-01-31 07:15:00 → BOS 2027-01-31 15:43:00; nonstop; 328 minutes. Local airport times.
• Delta Air Lines DL384: BOS 2027-02-05 07:50:00 → SEA 2027-02-05 11:21:00; nonstop; 391 minutes. Local airport times.

2027-01-31 → 2027-02-05 · Axel-exclusive $438.50

• Alaska Airlines AS2 / AA1152: SEA 2027-01-31 14:02:00 → BOS 2027-02-01 00:21:00; 1 stop(s) via DCA; 439 minutes. Local airport times.
  • AS2: SEA 2027-01-31 14:02:00 → DCA 2027-01-31 21:59:00; layover at DCA: 60 minutes.
  • AA1152: DCA 2027-01-31 22:59:00 → BOS 2027-02-01 00:21:00.
• Alaska Airlines AS215: BOS 2027-02-05 09:00:00 → SEA 2027-02-05 12:37:00; nonstop; 397 minutes. Local airport times.

2027-01-31 → 2027-02-05 · Axel-exclusive $438.50

• Alaska Airlines AS314 / AA4801: SEA 2027-01-31 09:16:00 → BOS 2027-01-31 19:55:00; 1 stop(s) via STL; 459 minutes. Local airport times.
  • AS314: SEA 2027-01-31 09:16:00 → STL 2027-01-31 15:06:00; layover at STL: 69 minutes.
  • AA4801: STL 2027-01-31 16:15:00 → BOS 2027-01-31 19:55:00.
• Alaska Airlines AS215: BOS 2027-02-05 09:00:00 → SEA 2027-02-05 12:37:00; nonstop; 397 minutes. Local airport times.

2027-01-31 → 2027-02-05 · Axel-exclusive $449.00

• American Airlines AA2379 / AA2089: SEA 2027-01-31 23:59:00 → BOS 2027-02-01 10:32:00; 1 stop(s) via ORD; 453 minutes. Local airport times.
  • AA2379: SEA 2027-01-31 23:59:00 → ORD 2027-02-01 05:55:00; layover at ORD: 64 minutes.
  • AA2089: ORD 2027-02-01 06:59:00 → BOS 2027-02-01 10:32:00.
• Delta Air Lines DL384: BOS 2027-02-05 07:50:00 → SEA 2027-02-05 11:21:00; nonstop; 391 minutes. Local airport times.

2027-01-31 → 2027-02-05 · Axel-exclusive $462.13

• Delta Air Lines DL876: SEA 2027-01-31 15:55:00 → BOS 2027-02-01 00:13:00; nonstop; 318 minutes. Local airport times.
• Delta Air Lines DL1019 / DL734: BOS 2027-02-05 05:30:00 → SEA 2027-02-05 11:09:00; 1 stop(s) via DTW; 519 minutes. Local airport times.
  • DL1019: BOS 2027-02-05 05:30:00 → DTW 2027-02-05 07:52:00; layover at DTW: 63 minutes.
  • DL734: DTW 2027-02-05 08:55:00 → SEA 2027-02-05 11:09:00.

2027-01-31 → 2027-02-05 · Axel-exclusive $463.25

• Delta Air Lines DL1120 / DL702: SEA 2027-01-31 13:25:00 → BOS 2027-01-31 23:57:00; 1 stop(s) via SLC; 452 minutes. Local airport times.
  • DL1120: SEA 2027-01-31 13:25:00 → SLC 2027-01-31 16:26:00; layover at SLC: 70 minutes.
  • DL702: SLC 2027-01-31 17:36:00 → BOS 2027-01-31 23:57:00.
• Delta Air Lines DL384: BOS 2027-02-05 07:50:00 → SEA 2027-02-05 11:21:00; nonstop; 391 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.

Explore this route

• All dates for this route
• Jan 30, 2027 · Return options
• Feb 1, 2027 · Return options
• Hotels in Boston with Axel

For AI assistants

• This page: Seattle (SEA) to Boston (BOS) · Jan 31, 2027 · return Feb 5, 2027: 1 adult in economy, every priced fare with its flights, times and total, each with the time its price was issued.
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