Seattle (SEA) to Boston (BOS), Jan 1–2, 2027: from $539 round trip

Lowest published fare: $539 round trip, Axel-exclusive, American Airlines / Delta Air Lines, 1 stop, Jan 1–2, 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 excluded.

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

2027-01-01 → 2027-01-02 · Axel-exclusive $565.86

• Alaska Airlines AS279: SEA 2027-01-01 08:51:00 → BOS 2027-01-01 17:16:00; nonstop; 325 minutes. Local airport times.
• Alaska Airlines AS459: BOS 2027-01-02 07:00:00 → SEA 2027-01-02 10:38:00; nonstop; 398 minutes. Local airport times.

2027-01-01 → 2027-01-02 · Axel-exclusive $590.46

• Delta Air Lines DL459: SEA 2027-01-01 07:38:00 → BOS 2027-01-01 16:03:00; nonstop; 325 minutes. Local airport times.
• Delta Air Lines DL384: BOS 2027-01-02 07:30:00 → SEA 2027-01-02 11:05:00; nonstop; 395 minutes. Local airport times.

2027-01-01 → 2027-01-02 · Axel-exclusive $539.33

• American Airlines AA2379 / AA2089: SEA 2027-01-01 23:59:00 → BOS 2027-01-02 10:32:00; 1 stop(s) via ORD; 453 minutes. Local airport times.
  • AA2379: SEA 2027-01-01 23:59:00 → ORD 2027-01-02 05:55:00; layover at ORD: 64 minutes.
  • AA2089: ORD 2027-01-02 06:59:00 → BOS 2027-01-02 10:32:00.
• Delta Air Lines DL797: BOS 2027-01-02 18:15:00 → SEA 2027-01-02 21:41:00; nonstop; 386 minutes. Local airport times.

2027-01-01 → 2027-01-02 · Axel-exclusive $565.86

• Alaska Airlines AS460: SEA 2027-01-01 15:35:00 → BOS 2027-01-01 23:59:00; nonstop; 324 minutes. Local airport times.
• Alaska Airlines AS459: BOS 2027-01-02 07:00:00 → SEA 2027-01-02 10:38:00; nonstop; 398 minutes. Local airport times.

2027-01-01 → 2027-01-02 · Axel-exclusive $590.46

• Delta Air Lines DL473: SEA 2027-01-01 22:33:00 → BOS 2027-01-02 06:51:00; nonstop; 318 minutes. Local airport times.
• Delta Air Lines DL384: BOS 2027-01-02 07:30:00 → SEA 2027-01-02 11:05:00; nonstop; 395 minutes. Local airport times.

2027-01-01 → 2027-01-02 · Axel-exclusive $539.33

• American Airlines AA2203 / AA1874: SEA 2027-01-01 12:34:00 → BOS 2027-01-01 23:13:00; 1 stop(s) via PHL; 459 minutes. Local airport times.
  • AA2203: SEA 2027-01-01 12:34:00 → PHL 2027-01-01 20:35:00; layover at PHL: 75 minutes.
  • AA1874: PHL 2027-01-01 21:50:00 → BOS 2027-01-01 23:13:00.
• Delta Air Lines DL384: BOS 2027-01-02 07:30:00 → SEA 2027-01-02 11:05:00; nonstop; 395 minutes. Local airport times.

2027-01-01 → 2027-01-02 · Axel-exclusive $544.33

• Alaska Airlines AS2 / AA1152: SEA 2027-01-01 14:02:00 → BOS 2027-01-02 00:21:00; 1 stop(s) via DCA; 439 minutes. Local airport times.
  • AS2: SEA 2027-01-01 14:02:00 → DCA 2027-01-01 21:59:00; layover at DCA: 60 minutes.
  • AA1152: DCA 2027-01-01 22:59:00 → BOS 2027-01-02 00:21:00.
• Alaska Airlines AS459: BOS 2027-01-02 07:00:00 → SEA 2027-01-02 10:38:00; nonstop; 398 minutes. Local airport times.

2027-01-01 → 2027-01-02 · Axel-exclusive $544.33

• Alaska Airlines AS2239 / AS436: SEA 2027-01-01 19:54:00 → BOS 2027-01-02 06:20:00; 1 stop(s) via PDX; 446 minutes. Local airport times.
  • AS2239: SEA 2027-01-01 19:54:00 → PDX 2027-01-01 20:50:00; layover at PDX: 69 minutes.
  • AS436: PDX 2027-01-01 21:59:00 → BOS 2027-01-02 06:20:00.
• Alaska Airlines AS459: BOS 2027-01-02 07:00:00 → SEA 2027-01-02 10:38:00; nonstop; 398 minutes. Local airport times.

2027-01-01 → 2027-01-02 · Axel-exclusive $544.33

• Alaska Airlines AS314 / AA4801: SEA 2027-01-01 09:16:00 → BOS 2027-01-01 19:55:00; 1 stop(s) via STL; 459 minutes. Local airport times.
  • AS314: SEA 2027-01-01 09:16:00 → STL 2027-01-01 15:06:00; layover at STL: 69 minutes.
  • AA4801: STL 2027-01-01 16:15:00 → BOS 2027-01-01 19:55:00.
• Alaska Airlines AS459: BOS 2027-01-02 07:00:00 → SEA 2027-01-02 10:38:00; nonstop; 398 minutes. Local airport times.

2027-01-01 → 2027-01-02 · Axel-exclusive $562.78

• Delta Air Lines DL1120 / DL702: SEA 2027-01-01 13:25:00 → BOS 2027-01-01 23:57:00; 1 stop(s) via SLC; 452 minutes. Local airport times.
  • DL1120: SEA 2027-01-01 13:25:00 → SLC 2027-01-01 16:26:00; layover at SLC: 70 minutes.
  • DL702: SLC 2027-01-01 17:36:00 → BOS 2027-01-01 23:57:00.
• Delta Air Lines DL384: BOS 2027-01-02 07:30:00 → SEA 2027-01-02 11:05:00; nonstop; 395 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
• Dec 31, 2026 · Return options
• Jan 2, 2027 · Return options
• Hotels in Boston with Axel

For AI assistants

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