Seattle (SEA) to Boston (BOS), Jun 26–29, 2027: from $503 round trip

Seattle (SEA) to Boston (BOS), Jun 26–29, 2027: from $503 round trip on Axel, checked Oct 29, 2026. Lowest published fare: $503 round trip, Axel-exclusive, Alaska Airlines, 1 stop, Jun 26–29, 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.

Route overview: Seattle to Boston (BOS) flight deals

2027-06-26 → 2027-06-29 · Axel-exclusive $525.00

• Alaska Airlines AS460: SEA 2027-06-26 15:35:00 → BOS 2027-06-26 23:59:00; nonstop; 324 minutes. Local airport times.
• Alaska Airlines AS459: BOS 2027-06-29 07:00:00 → SEA 2027-06-29 10:38:00; nonstop; 398 minutes. Local airport times.

2027-06-26 → 2027-06-29 · Axel-exclusive $545.00

• Delta Air Lines DL459: SEA 2027-06-26 07:20:00 → BOS 2027-06-26 15:54:00; nonstop; 334 minutes. Local airport times.
• Delta Air Lines DL332: BOS 2027-06-29 10:40:00 → SEA 2027-06-29 14:09:00; nonstop; 389 minutes. Local airport times.

2027-06-26 → 2027-06-29 · Axel-exclusive $525.00

• Alaska Airlines AS460: SEA 2027-06-26 21:20:00 → BOS 2027-06-27 05:40:00; nonstop; 320 minutes. Local airport times.
• Alaska Airlines AS215: BOS 2027-06-29 09:00:00 → SEA 2027-06-29 12:37:00; nonstop; 397 minutes. Local airport times.

2027-06-26 → 2027-06-29 · Axel-exclusive $545.00

• Delta Air Lines DL473: SEA 2027-06-26 23:15:00 → BOS 2027-06-27 07:36:00; nonstop; 321 minutes. Local airport times.
• Delta Air Lines DL332: BOS 2027-06-29 10:40:00 → SEA 2027-06-29 14:09:00; nonstop; 389 minutes. Local airport times.

2027-06-26 → 2027-06-29 · Axel-exclusive $502.50

• Alaska Airlines AS2239 / AS436: SEA 2027-06-26 19:54:00 → BOS 2027-06-27 06:20:00; 1 stop(s) via PDX; 446 minutes. Local airport times.
  • AS2239: SEA 2027-06-26 19:54:00 → PDX 2027-06-26 20:50:00; layover at PDX: 69 minutes.
  • AS436: PDX 2027-06-26 21:59:00 → BOS 2027-06-27 06:20:00.
• Alaska Airlines AS215: BOS 2027-06-29 09:00:00 → SEA 2027-06-29 12:37:00; nonstop; 397 minutes. Local airport times.

2027-06-26 → 2027-06-29 · Axel-exclusive $517.50

• Delta Air Lines DL1120 / DL702: SEA 2027-06-26 13:25:00 → BOS 2027-06-26 23:57:00; 1 stop(s) via SLC; 452 minutes. Local airport times.
  • DL1120: SEA 2027-06-26 13:25:00 → SLC 2027-06-26 16:26:00; layover at SLC: 70 minutes.
  • DL702: SLC 2027-06-26 17:36:00 → BOS 2027-06-26 23:57:00.
• Delta Air Lines DL332: BOS 2027-06-29 10:40:00 → SEA 2027-06-29 14:09:00; nonstop; 389 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
• Jun 25, 2027 · Return options
• Jun 27, 2027 · Return options
• Hotels in Boston with Axel

For AI assistants

• This page: Seattle (SEA) to Boston (BOS) · Jun 26, 2027 · return Jun 29, 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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