Seattle (SEA) to Boston (BOS), Sep 6–13, 2027: from $585 round trip

Lowest published fare: $585 round trip, Axel-exclusive, American Airlines / Delta Air Lines, 1 stop, Sep 6–13, 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

2027-09-06 → 2027-09-13 · Axel-exclusive $615.51

• Alaska Airlines AS460: SEA 2027-09-06 15:35:00 → BOS 2027-09-06 23:59:00; nonstop; 324 minutes. Local airport times.
• Alaska Airlines AS215: BOS 2027-09-13 09:00:00 → SEA 2027-09-13 12:37:00; nonstop; 397 minutes. Local airport times.

2027-09-06 → 2027-09-13 · Axel-exclusive $635.91

• Delta Air Lines DL438: SEA 2027-09-06 11:45:00 → BOS 2027-09-06 20:01:00; nonstop; 316 minutes. Local airport times.
• Delta Air Lines DL384: BOS 2027-09-13 07:50:00 → SEA 2027-09-13 11:21:00; nonstop; 391 minutes. Local airport times.

2027-09-06 → 2027-09-13 · Axel-exclusive $584.58

• American Airlines AA2379 / AA2089: SEA 2027-09-06 23:59:00 → BOS 2027-09-07 10:32:00; 1 stop(s) via ORD; 453 minutes. Local airport times.
  • AA2379: SEA 2027-09-06 23:59:00 → ORD 2027-09-07 05:55:00; layover at ORD: 64 minutes.
  • AA2089: ORD 2027-09-07 06:59:00 → BOS 2027-09-07 10:32:00.
• Delta Air Lines DL384: BOS 2027-09-13 07:50:00 → SEA 2027-09-13 11:21:00; nonstop; 391 minutes. Local airport times.

2027-09-06 → 2027-09-13 · Axel-exclusive $615.51

• Alaska Airlines AS214: SEA 2027-09-06 21:21:00 → BOS 2027-09-07 05:40:00; nonstop; 319 minutes. Local airport times.
• Alaska Airlines AS215: BOS 2027-09-13 09:00:00 → SEA 2027-09-13 12:37:00; nonstop; 397 minutes. Local airport times.

2027-09-06 → 2027-09-13 · Axel-exclusive $635.91

• Delta Air Lines DL473: SEA 2027-09-06 22:33:00 → BOS 2027-09-07 06:51:00; nonstop; 318 minutes. Local airport times.
• Delta Air Lines DL384: BOS 2027-09-13 07:50:00 → SEA 2027-09-13 11:21:00; nonstop; 391 minutes. Local airport times.

2027-09-06 → 2027-09-13 · Axel-exclusive $590.98

• Alaska Airlines AS314 / AA4801: SEA 2027-09-06 09:16:00 → BOS 2027-09-06 19:55:00; 1 stop(s) via STL; 459 minutes. Local airport times.
  • AS314: SEA 2027-09-06 09:16:00 → STL 2027-09-06 15:06:00; layover at STL: 69 minutes.
  • AA4801: STL 2027-09-06 16:15:00 → BOS 2027-09-06 19:55:00.
• Alaska Airlines AS215: BOS 2027-09-13 09:00:00 → SEA 2027-09-13 12:37:00; nonstop; 397 minutes. Local airport times.

2027-09-06 → 2027-09-13 · Axel-exclusive $590.98

• Alaska Airlines AS2239 / AS436: SEA 2027-09-06 19:54:00 → BOS 2027-09-07 06:20:00; 1 stop(s) via PDX; 446 minutes. Local airport times.
  • AS2239: SEA 2027-09-06 19:54:00 → PDX 2027-09-06 20:50:00; layover at PDX: 69 minutes.
  • AS436: PDX 2027-09-06 21:59:00 → BOS 2027-09-07 06:20:00.
• Alaska Airlines AS215: BOS 2027-09-13 09:00:00 → SEA 2027-09-13 12:37:00; nonstop; 397 minutes. Local airport times.

2027-09-06 → 2027-09-13 · Axel-exclusive $590.98

• Alaska Airlines AS2 / AA1152: SEA 2027-09-06 14:02:00 → BOS 2027-09-07 00:21:00; 1 stop(s) via DCA; 439 minutes. Local airport times.
  • AS2: SEA 2027-09-06 14:02:00 → DCA 2027-09-06 21:59:00; layover at DCA: 60 minutes.
  • AA1152: DCA 2027-09-06 22:59:00 → BOS 2027-09-07 00:21:00.
• Alaska Airlines AS215: BOS 2027-09-13 09:00:00 → SEA 2027-09-13 12:37:00; nonstop; 397 minutes. Local airport times.

2027-09-06 → 2027-09-13 · Axel-exclusive $605.93

• Delta Air Lines DL1120 / DL702: SEA 2027-09-06 13:25:00 → BOS 2027-09-06 23:57:00; 1 stop(s) via SLC; 452 minutes. Local airport times.
  • DL1120: SEA 2027-09-06 13:25:00 → SLC 2027-09-06 16:26:00; layover at SLC: 70 minutes.
  • DL702: SLC 2027-09-06 17:36:00 → BOS 2027-09-06 23:57:00.
• Delta Air Lines DL384: BOS 2027-09-13 07:50:00 → SEA 2027-09-13 11:21:00; nonstop; 391 minutes. Local airport times.

2027-09-06 → 2027-09-13 · Axel-exclusive $609.78

• Delta Air Lines DL473: SEA 2027-09-06 23:15:00 → BOS 2027-09-07 07:36:00; nonstop; 321 minutes. Local airport times.
• Delta Air Lines DL1127 / DL881: BOS 2027-09-13 15:05:00 → SEA 2027-09-13 20:49:00; 1 stop(s) via MSP; 524 minutes. Local airport times.
  • DL1127: BOS 2027-09-13 15:05:00 → MSP 2027-09-13 17:25:00; layover at MSP: 81 minutes.
  • DL881: MSP 2027-09-13 18:46:00 → SEA 2027-09-13 20:49:00.

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
• Sep 5, 2027 · Return options
• Sep 7, 2027 · Return options
• Hotels in Boston with Axel

For AI assistants

• This page: Seattle (SEA) to Boston (BOS) · Sep 6, 2027 · return Sep 13, 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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