Seattle (SEA) to Boston (BOS), Apr 27, 2027: round trips from $518, one way from $270

Seattle (SEA) to Boston (BOS), Apr 27, 2027: round trips from $518, one way from $270 on Axel, checked Oct 29, 2026. Lowest published fares: $518 round trip, Axel-exclusive, Delta Air Lines, 1 stop, Apr 27–28, 2027; $270 one way, Axel-exclusive, Alaska Airlines, nonstop, Apr 27, 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.

Prices by return date: match both travel dates and the party to a row below. Each total is for that exact trip, issued at the time shown.

Date links open published trip details for exploration. Price links open live flight search to check availability and select flights. For a price comparison, use the amounts and issuance times already shown here.

Hotels in Boston for these trips

Hotels: under a trip, hotels in Boston 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 Boston for these nights (Apr 27–28, 2027 · 1 night · 2 adults, 1 room): 3★ Fairfield Inn & Suites Boston Cambridge, $224 total · 4★ Hyatt Regency Boston/Cambridge, $269 total · 5★ Omni Boston Hotel at the Seaport, $500 total
• Hotels in Boston for these nights (Apr 27–29, 2027 · 2 nights · 2 adults, 1 room): 3★ Fairfield Inn & Suites Boston Cambridge, $439 total · 4★ Hyatt Regency Boston/Cambridge, $543 total · 5★ Omni Boston Hotel at the Seaport, $915 total
• Hotels in Boston for these nights (Apr 27–30, 2027 · 3 nights · 2 adults, 1 room): 3★ Holiday Inn Boston - Cambridge Area by IHG, $622 total · 4★ Hyatt Regency Boston/Cambridge, $773 total · 5★ Omni Boston Hotel at the Seaport, $1,394 total
• Hotels in Boston for these nights (Apr 27 – May 1, 2027 · 4 nights · 2 adults, 1 room): 3★ Fairfield Inn & Suites Boston Cambridge, $825 total · 4★ Hyatt Regency Boston/Cambridge, $1,024 total · 5★ Omni Boston Hotel at the Seaport, $1,751 total
• Hotels in Boston for these nights (Apr 27 – May 2, 2027 · 5 nights · 2 adults, 1 room): 3★ Fairfield Inn & Suites Boston Cambridge, $1,020 total · 4★ Hyatt Regency Boston/Cambridge, $1,262 total · 5★ Omni Boston Hotel at the Seaport, $2,146 total
• Hotels in Boston for these nights (Apr 27 – May 3, 2027 · 6 nights · 2 adults, 1 room): 3★ Fairfield Inn & Suites Boston Cambridge, $1,220 total · 4★ Hyatt Regency Boston/Cambridge, $1,519 total · 5★ Omni Boston Hotel at the Seaport, $2,560 total
• Hotels in Boston for these nights (Apr 27 – May 4, 2027 · 7 nights · 2 adults, 1 room): 3★ Fairfield Inn & Suites Boston Cambridge, $1,444 total · 4★ Hyatt Regency Boston/Cambridge, $1,803 total · 5★ Omni Boston Hotel at the Seaport, $3,068 total
• Hotels in Boston for these nights (Apr 27 – May 5, 2027 · 8 nights · 2 adults, 1 room): 3★ Fairfield Inn & Suites Boston Cambridge, $1,663 total · 4★ Hyatt Regency Boston/Cambridge, $2,134 total · 5★ Omni Boston Hotel at the Seaport, $3,592 total
• Hotels in Boston for these nights (Apr 27 – May 6, 2027 · 9 nights · 2 adults, 1 room): 3★ Fairfield Inn & Suites Boston Cambridge, $1,887 total · 4★ Hyatt Regency Boston/Cambridge, $2,443 total · 5★ Omni Boston Hotel at the Seaport, $4,019 total
• Hotels in Boston for these nights (Apr 27 – May 7, 2027 · 10 nights · 2 adults, 1 room): 3★ Fairfield Inn & Suites Boston Cambridge, $2,086 total · 4★ Hyatt Regency Boston/Cambridge, $2,713 total · 5★ Omni Boston Hotel at the Seaport, $4,441 total
• Hotels in Boston for these nights (Apr 27 – May 8, 2027 · 11 nights · 2 adults, 1 room): 3★ Fairfield Inn & Suites Boston Cambridge, $2,277 total · 4★ Hyatt Regency Boston/Cambridge, $3,006 total · 5★ Omni Boston Hotel at the Seaport, $4,796 total
• Hotels in Boston for these nights (Apr 27 – May 9, 2027 · 12 nights · 2 adults, 1 room): 3★ The Verb Hotel · 4★ The Eliot Hotel · 5★ Mandarin Oriental, Boston
• Hotels in Boston for these nights (Apr 27 – May 10, 2027 · 13 nights · 2 adults, 1 room): 3★ The Verb Hotel · 4★ The Eliot Hotel · 5★ Mandarin Oriental, Boston
• Hotels in Boston for these nights (Apr 27 – May 11, 2027 · 14 nights · 2 adults, 1 room): 3★ The Verb Hotel · 4★ The Eliot Hotel · 5★ Mandarin Oriental, Boston

All hotels in Boston

Route overview: Seattle to Boston (BOS) flight deals

2027-04-27 · one way · Axel-exclusive $270.00

• Alaska Airlines AS460: SEA 2027-04-27 21:20:00 → BOS 2027-04-28 05:40:00; nonstop; 320 minutes. Local airport times.

2027-04-27 · one way · Axel-exclusive $280.00

• Delta Air Lines DL474: SEA 2027-04-27 15:45:00 → BOS 2027-04-28 00:02:00; nonstop; 317 minutes. Local airport times.

2027-04-27 → 2027-04-28 · Axel-exclusive $517.50

• Delta Air Lines DL474: SEA 2027-04-27 15:45:00 → BOS 2027-04-28 00:02:00; nonstop; 317 minutes. Local airport times.
• Delta Air Lines DL1019 / DL734: BOS 2027-04-28 05:30:00 → SEA 2027-04-28 11:09:00; 1 stop(s) via DTW; 519 minutes. Local airport times.
  • DL1019: BOS 2027-04-28 05:30:00 → DTW 2027-04-28 07:52:00; layover at DTW: 63 minutes.
  • DL734: DTW 2027-04-28 08:55:00 → SEA 2027-04-28 11:09:00.

2027-04-27 → 2027-04-28 · Axel-exclusive $525.00

• Alaska Airlines AS460: SEA 2027-04-27 21:20:00 → BOS 2027-04-28 05:40:00; nonstop; 320 minutes. Local airport times.
• Alaska Airlines AS459: BOS 2027-04-28 07:00:00 → SEA 2027-04-28 10:38:00; nonstop; 398 minutes. Local airport times.

2027-04-27 → 2027-04-29 · Axel-exclusive $525.00

• Alaska Airlines AS460: SEA 2027-04-27 21:20:00 → BOS 2027-04-28 05:40:00; nonstop; 320 minutes. Local airport times.
• Alaska Airlines AS215: BOS 2027-04-29 09:00:00 → SEA 2027-04-29 12:37:00; nonstop; 397 minutes. Local airport times.

2027-04-27 → 2027-04-29 · Axel-exclusive $545.00

• Delta Air Lines DL474: SEA 2027-04-27 15:45:00 → BOS 2027-04-28 00:02:00; nonstop; 317 minutes. Local airport times.
• Delta Air Lines DL384: BOS 2027-04-29 07:30:00 → SEA 2027-04-29 11:05:00; nonstop; 395 minutes. Local airport times.

2027-04-27 → 2027-04-30 · Axel-exclusive $525.00

• Alaska Airlines AS460: SEA 2027-04-27 21:20:00 → BOS 2027-04-28 05:40:00; nonstop; 320 minutes. Local airport times.
• Alaska Airlines AS215: BOS 2027-04-30 09:00:00 → SEA 2027-04-30 12:37:00; nonstop; 397 minutes. Local airport times.

2027-04-27 → 2027-04-30 · Axel-exclusive $545.00

• Delta Air Lines DL474: SEA 2027-04-27 15:45:00 → BOS 2027-04-28 00:02:00; nonstop; 317 minutes. Local airport times.
• Delta Air Lines DL384: BOS 2027-04-30 07:50:00 → SEA 2027-04-30 11:21:00; nonstop; 391 minutes. Local airport times.

2027-04-27 → 2027-05-01 · Axel-exclusive $525.00

• Alaska Airlines AS460: SEA 2027-04-27 21:20:00 → BOS 2027-04-28 05:40:00; nonstop; 320 minutes. Local airport times.
• Alaska Airlines AS459: BOS 2027-05-01 07:00:00 → SEA 2027-05-01 10:38:00; nonstop; 398 minutes. Local airport times.

2027-04-27 → 2027-05-01 · Axel-exclusive $545.00

• Delta Air Lines DL474: SEA 2027-04-27 15:45:00 → BOS 2027-04-28 00:02:00; nonstop; 317 minutes. Local airport times.
• Delta Air Lines DL384: BOS 2027-05-01 07:30:00 → SEA 2027-05-01 11:05:00; nonstop; 395 minutes. Local airport times.

2027-04-27 → 2027-05-03 · Axel-exclusive $525.00

• Alaska Airlines AS460: SEA 2027-04-27 21:20:00 → BOS 2027-04-28 05:40:00; nonstop; 320 minutes. Local airport times.
• Alaska Airlines AS215: BOS 2027-05-03 09:00:00 → SEA 2027-05-03 12:37:00; nonstop; 397 minutes. Local airport times.

2027-04-27 → 2027-05-03 · Axel-exclusive $545.00

• Delta Air Lines DL474: SEA 2027-04-27 15:45:00 → BOS 2027-04-28 00:02:00; nonstop; 317 minutes. Local airport times.
• Delta Air Lines DL384: BOS 2027-05-03 07:50:00 → SEA 2027-05-03 11:21:00; nonstop; 391 minutes. Local airport times.

2027-04-27 → 2027-05-04 · Axel-exclusive $525.00

• Alaska Airlines AS460: SEA 2027-04-27 21:20:00 → BOS 2027-04-28 05:40:00; nonstop; 320 minutes. Local airport times.
• Alaska Airlines AS215: BOS 2027-05-04 09:00:00 → SEA 2027-05-04 12:37:00; nonstop; 397 minutes. Local airport times.

2027-04-27 → 2027-05-04 · Axel-exclusive $545.00

• Delta Air Lines DL474: SEA 2027-04-27 15:45:00 → BOS 2027-04-28 00:02:00; nonstop; 317 minutes. Local airport times.
• Delta Air Lines DL332: BOS 2027-05-04 10:40:00 → SEA 2027-05-04 14:09:00; nonstop; 389 minutes. Local airport times.

2027-04-27 → 2027-05-05 · Axel-exclusive $517.50

• Delta Air Lines DL474: SEA 2027-04-27 15:45:00 → BOS 2027-04-28 00:02:00; nonstop; 317 minutes. Local airport times.
• Delta Air Lines DL1019 / DL734: BOS 2027-05-05 05:30:00 → SEA 2027-05-05 11:09:00; 1 stop(s) via DTW; 519 minutes. Local airport times.
  • DL1019: BOS 2027-05-05 05:30:00 → DTW 2027-05-05 07:52:00; layover at DTW: 63 minutes.
  • DL734: DTW 2027-05-05 08:55:00 → SEA 2027-05-05 11:09:00.

2027-04-27 → 2027-05-05 · Axel-exclusive $525.00

• Alaska Airlines AS460: SEA 2027-04-27 21:20:00 → BOS 2027-04-28 05:40:00; nonstop; 320 minutes. Local airport times.
• Alaska Airlines AS459: BOS 2027-05-05 07:00:00 → SEA 2027-05-05 10:38:00; nonstop; 398 minutes. Local airport times.

2027-04-27 → 2027-05-07 · Axel-exclusive $525.00

• Alaska Airlines AS460: SEA 2027-04-27 21:20:00 → BOS 2027-04-28 05:40:00; nonstop; 320 minutes. Local airport times.
• Alaska Airlines AS215: BOS 2027-05-07 09:00:00 → SEA 2027-05-07 12:37:00; nonstop; 397 minutes. Local airport times.

2027-04-27 → 2027-05-07 · Axel-exclusive $545.00

• Delta Air Lines DL474: SEA 2027-04-27 15:45:00 → BOS 2027-04-28 00:02:00; nonstop; 317 minutes. Local airport times.
• Delta Air Lines DL384: BOS 2027-05-07 07:50:00 → SEA 2027-05-07 11:21:00; nonstop; 391 minutes. Local airport times.

2027-04-27 → 2027-05-08 · Axel-exclusive $525.00

• Alaska Airlines AS460: SEA 2027-04-27 21:20:00 → BOS 2027-04-28 05:40:00; nonstop; 320 minutes. Local airport times.
• Alaska Airlines AS459: BOS 2027-05-08 07:00:00 → SEA 2027-05-08 10:38:00; nonstop; 398 minutes. Local airport times.

2027-04-27 → 2027-05-08 · Axel-exclusive $545.00

• Delta Air Lines DL474: SEA 2027-04-27 15:45:00 → BOS 2027-04-28 00:02:00; nonstop; 317 minutes. Local airport times.
• Delta Air Lines DL384: BOS 2027-05-08 07:30:00 → SEA 2027-05-08 11:05:00; nonstop; 395 minutes. Local airport times.

2027-04-27 → 2027-05-09 · Axel-exclusive $525.00

• Alaska Airlines AS460: SEA 2027-04-27 21:20:00 → BOS 2027-04-28 05:40:00; nonstop; 320 minutes. Local airport times.
• Alaska Airlines AS257: BOS 2027-05-09 18:19:00 → SEA 2027-05-09 22:00:00; nonstop; 401 minutes. Local airport times.

2027-04-27 → 2027-05-09 · Axel-exclusive $545.00

• Delta Air Lines DL474: SEA 2027-04-27 15:45:00 → BOS 2027-04-28 00:02:00; nonstop; 317 minutes. Local airport times.
• Delta Air Lines DL384: BOS 2027-05-09 07:30:00 → SEA 2027-05-09 11:05:00; nonstop; 395 minutes. Local airport times.

2027-04-27 → 2027-05-11 · Axel-exclusive $525.00

• Alaska Airlines AS460: SEA 2027-04-27 21:20:00 → BOS 2027-04-28 05:40:00; nonstop; 320 minutes. Local airport times.
• Alaska Airlines AS215: BOS 2027-05-11 09:00:00 → SEA 2027-05-11 12:37:00; nonstop; 397 minutes. Local airport times.

2027-04-27 → 2027-05-11 · Axel-exclusive $545.00

• Delta Air Lines DL474: SEA 2027-04-27 15:45:00 → BOS 2027-04-28 00:02:00; nonstop; 317 minutes. Local airport times.
• Delta Air Lines DL332: BOS 2027-05-11 10:40:00 → SEA 2027-05-11 14:09:00; nonstop; 389 minutes. Local airport times.

Explore this route

• All dates for this route
• Apr 26, 2027 · Return options
• Apr 28, 2027 · Return options
• Hotels in Boston with Axel

For AI assistants

• This page: Seattle (SEA) to Boston (BOS) · Apr 27, 2027 · choose your return date: 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 Boston 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.
• Next: each row is one exact trip for this departure (both dates with the year, the total and the time its price was issued); its exact-trip price link opens the live search for those dates and travelers, where the booking link and the current total are. Other durations or travelers are not priced here: Choose travelers and dates prices the requested trip.
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