Seattle (SEA) to Boston (BOS), Apr 20, 2027: round trips from $550, one way from $294

Seattle (SEA) to Boston (BOS), Apr 20, 2027: round trips from $550, one way from $294 on Axel, checked Nov 13, 2026. Lowest published fares: $550 round trip, Axel-exclusive, American Airlines / Alaska Airlines, 1 stop, Apr 20–21, 2027; $294 one way, Axel-exclusive, American Airlines, 1 stop, Apr 20, 2027; 1 adult, economy, checked Nov 13, 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, labelled with the check date 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 check dates 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 nightly rate and the stay's total, from the lowest saved total among the shortlisted hotels in that star tier for those dates.

• Hotels in Boston for these nights (Apr 20–21, 2027 · 1 night · 2 adults, 1 room): 3★ Fairfield Inn & Suites Boston Cambridge, $224 a night · 4★ Seaport Hotel® Boston, $218 a night · 5★ Omni Boston Hotel at the Seaport, $464 a night
• Hotels in Boston for these nights (Apr 20–22, 2027 · 2 nights · 2 adults, 1 room): 3★ Fairfield Inn & Suites Boston Cambridge, $224 a night, $447 for 2 nights · 4★ Seaport Hotel® Boston, $233 a night, $465 for 2 nights · 5★ InterContinental Boston by IHG, $515 a night, $1,029 for 2 nights
• Hotels in Boston for these nights (Apr 20–23, 2027 · 3 nights · 2 adults, 1 room): 3★ Fairfield Inn & Suites Boston Cambridge, $215 a night, $646 for 3 nights · 4★ Hyatt Regency Boston/Cambridge, $277 a night, $830 for 3 nights · 5★ InterContinental Boston by IHG, $513 a night, $1,539 for 3 nights
• Hotels in Boston for these nights (Apr 20–24, 2027 · 4 nights · 2 adults, 1 room): 3★ Fairfield Inn & Suites Boston Cambridge, $209 a night, $837 for 4 nights · 4★ Harborside Inn Of Boston, $305 a night, $1,221 for 4 nights · 5★ The Liberty, a Marriott Luxury Collection Hotel, Boston, $508 a night, $2,032 for 4 nights
• Hotels in Boston for these nights (Apr 20–25, 2027 · 5 nights · 2 adults, 1 room): 3★ Fairfield Inn & Suites Boston Cambridge, $206 a night, $1,029 for 5 nights · 4★ Harborside Inn Of Boston, $305 a night, $1,527 for 5 nights · 5★ The Liberty, a Marriott Luxury Collection Hotel, Boston, $514 a night, $2,570 for 5 nights
• Hotels in Boston for these nights (Apr 20–26, 2027 · 6 nights · 2 adults, 1 room): 3★ Fairfield Inn & Suites Boston Cambridge, $204 a night, $1,225 for 6 nights · 4★ Harborside Inn Of Boston, $306 a night, $1,836 for 6 nights · 5★ InterContinental Boston by IHG, $512 a night, $3,069 for 6 nights
• Hotels in Boston for these nights (Apr 20–27, 2027 · 7 nights · 2 adults, 1 room): 3★ Fairfield Inn & Suites Boston Cambridge, $207 a night, $1,448 for 7 nights · 4★ Harborside Inn Of Boston, $306 a night, $2,139 for 7 nights · 5★ XV Beacon, $541 a night, $3,786 for 7 nights
• Hotels in Boston for these nights (Apr 20–28, 2027 · 8 nights · 2 adults, 1 room): 3★ Fairfield Inn & Suites Boston Cambridge, $209 a night, $1,672 for 8 nights · 4★ Harborside Inn Of Boston, $305 a night, $2,441 for 8 nights · 5★ XV Beacon, $541 a night, $4,328 for 8 nights
• Hotels in Boston for these nights (Apr 20–29, 2027 · 9 nights · 2 adults, 1 room): 3★ Fairfield Inn & Suites Boston Cambridge, $210 a night, $1,887 for 9 nights · 4★ Harborside Inn Of Boston, $304 a night, $2,738 for 9 nights · 5★ XV Beacon, $541 a night, $4,870 for 9 nights
• Hotels in Boston for these nights (Apr 20–30, 2027 · 10 nights · 2 adults, 1 room): 3★ Fairfield Inn & Suites Boston Cambridge, $208 a night, $2,078 for 10 nights · 4★ Harborside Inn Of Boston, $304 a night, $3,041 for 10 nights · 5★ XV Beacon, $540 a night, $5,402 for 10 nights
• Hotels in Boston for these nights (Apr 20 – May 1, 2027 · 11 nights · 2 adults, 1 room): 3★ Fairfield Inn & Suites Boston Cambridge, $207 a night, $2,273 for 11 nights · 4★ Harborside Inn Of Boston, $304 a night, $3,344 for 11 nights · 5★ XV Beacon, $540 a night, $5,945 for 11 nights
• Hotels in Boston for these nights (Apr 20 – May 2, 2027 · 12 nights · 2 adults, 1 room): 3★ Fairfield Inn & Suites Boston Cambridge, $206 a night, $2,468 for 12 nights · 4★ Harborside Inn Of Boston, $320 a night, $3,840 for 12 nights · 5★ XV Beacon, $541 a night, $6,487 for 12 nights
• Hotels in Boston for these nights (Apr 20 – May 3, 2027 · 13 nights · 2 adults, 1 room): 3★ Fairfield Inn & Suites Boston Cambridge, $205 a night, $2,668 for 13 nights · 4★ Harborside Inn Of Boston, $333 a night, $4,329 for 13 nights · 5★ XV Beacon, $540 a night, $7,019 for 13 nights
• Hotels in Boston for these nights (Apr 20 – May 4, 2027 · 14 nights · 2 adults, 1 room): 3★ Fairfield Inn & Suites Boston Cambridge, $207 a night, $2,892 for 14 nights · 4★ Harborside Inn Of Boston, $344 a night, $4,810 for 14 nights · 5★ XV Beacon, $540 a night, $7,561 for 14 nights

All hotels in Boston

Route overview: Seattle to Boston (BOS) flight deals

2027-04-20 · one way · Axel-exclusive $294

• American Airlines AA2379 / AA2089: SEA 2027-04-20 23:59:00 → BOS 2027-04-21 10:32:00; 1 stop(s) via ORD; 453 minutes. Local airport times.
  • AA2379: SEA 2027-04-20 23:59:00 → ORD 2027-04-21 05:55:00; layover at ORD: 64 minutes.
  • AA2089: ORD 2027-04-21 06:59:00 → BOS 2027-04-21 10:32:00.

2027-04-20 · one way · Axel-exclusive $338

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

2027-04-20 → 2027-04-21 · Axel-exclusive $550

• American Airlines AA2379 / AA2089: SEA 2027-04-20 23:59:00 → BOS 2027-04-21 10:32:00; 1 stop(s) via ORD; 453 minutes. Local airport times.
  • AA2379: SEA 2027-04-20 23:59:00 → ORD 2027-04-21 05:55:00; layover at ORD: 64 minutes.
  • AA2089: ORD 2027-04-21 06:59:00 → BOS 2027-04-21 10:32:00.
• Alaska Airlines AS257: BOS 2027-04-21 17:44:00 → SEA 2027-04-21 21:08:00; nonstop; 384 minutes. Local airport times.

2027-04-20 → 2027-04-21 · Axel-exclusive $591

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

2027-04-20 → 2027-04-22 · Axel-exclusive $550

• American Airlines AA2379 / AA2089: SEA 2027-04-20 23:59:00 → BOS 2027-04-21 10:32:00; 1 stop(s) via ORD; 453 minutes. Local airport times.
  • AA2379: SEA 2027-04-20 23:59:00 → ORD 2027-04-21 05:55:00; layover at ORD: 64 minutes.
  • AA2089: ORD 2027-04-21 06:59:00 → BOS 2027-04-21 10:32:00.
• Alaska Airlines AS215: BOS 2027-04-22 09:00:00 → SEA 2027-04-22 12:37:00; nonstop; 397 minutes. Local airport times.

2027-04-20 → 2027-04-22 · Axel-exclusive $591

• Alaska Airlines AS460: SEA 2027-04-20 21:20:00 → BOS 2027-04-21 05:40:00; nonstop; 320 minutes. Local airport times.
• Alaska Airlines AS215: BOS 2027-04-22 09:00:00 → SEA 2027-04-22 12:37:00; nonstop; 397 minutes. Local airport times.

2027-04-20 → 2027-04-23 · Axel-exclusive $560

• American Airlines AA2379 / AA2089: SEA 2027-04-20 23:59:00 → BOS 2027-04-21 10:32:00; 1 stop(s) via ORD; 453 minutes. Local airport times.
  • AA2379: SEA 2027-04-20 23:59:00 → ORD 2027-04-21 05:55:00; layover at ORD: 64 minutes.
  • AA2089: ORD 2027-04-21 06:59:00 → BOS 2027-04-21 10:32:00.
• Delta Air Lines DL384: BOS 2027-04-23 07:50:00 → SEA 2027-04-23 11:21:00; nonstop; 391 minutes. Local airport times.

2027-04-20 → 2027-04-23 · Axel-exclusive $591

• Alaska Airlines AS460: SEA 2027-04-20 21:20:00 → BOS 2027-04-21 05:40:00; nonstop; 320 minutes. Local airport times.
• Alaska Airlines AS215: BOS 2027-04-23 09:00:00 → SEA 2027-04-23 12:37:00; nonstop; 397 minutes. Local airport times.

2027-04-20 → 2027-04-24 · Axel-exclusive $560

• American Airlines AA2379 / AA2089: SEA 2027-04-20 23:59:00 → BOS 2027-04-21 10:32:00; 1 stop(s) via ORD; 453 minutes. Local airport times.
  • AA2379: SEA 2027-04-20 23:59:00 → ORD 2027-04-21 05:55:00; layover at ORD: 64 minutes.
  • AA2089: ORD 2027-04-21 06:59:00 → BOS 2027-04-21 10:32:00.
• Delta Air Lines DL384: BOS 2027-04-24 07:30:00 → SEA 2027-04-24 11:05:00; nonstop; 395 minutes. Local airport times.

2027-04-20 → 2027-04-24 · Axel-exclusive $591

• Alaska Airlines AS460: SEA 2027-04-20 21:20:00 → BOS 2027-04-21 05:40:00; nonstop; 320 minutes. Local airport times.
• Alaska Airlines AS459: BOS 2027-04-24 07:00:00 → SEA 2027-04-24 10:38:00; nonstop; 398 minutes. Local airport times.

2027-04-20 → 2027-04-26 · Axel-exclusive $560

• American Airlines AA2379 / AA2089: SEA 2027-04-20 23:59:00 → BOS 2027-04-21 10:32:00; 1 stop(s) via ORD; 453 minutes. Local airport times.
  • AA2379: SEA 2027-04-20 23:59:00 → ORD 2027-04-21 05:55:00; layover at ORD: 64 minutes.
  • AA2089: ORD 2027-04-21 06:59:00 → BOS 2027-04-21 10:32:00.
• Delta Air Lines DL384: BOS 2027-04-26 07:50:00 → SEA 2027-04-26 11:21:00; nonstop; 391 minutes. Local airport times.

2027-04-20 → 2027-04-26 · Axel-exclusive $591

• Alaska Airlines AS460: SEA 2027-04-20 21:20:00 → BOS 2027-04-21 05:40:00; nonstop; 320 minutes. Local airport times.
• Alaska Airlines AS215: BOS 2027-04-26 09:00:00 → SEA 2027-04-26 12:37:00; nonstop; 397 minutes. Local airport times.

2027-04-20 → 2027-04-27 · Axel-exclusive $560

• American Airlines AA2379 / AA2089: SEA 2027-04-20 23:59:00 → BOS 2027-04-21 10:32:00; 1 stop(s) via ORD; 453 minutes. Local airport times.
  • AA2379: SEA 2027-04-20 23:59:00 → ORD 2027-04-21 05:55:00; layover at ORD: 64 minutes.
  • AA2089: ORD 2027-04-21 06:59:00 → BOS 2027-04-21 10:32:00.
• Delta Air Lines DL332: BOS 2027-04-27 10:40:00 → SEA 2027-04-27 14:09:00; nonstop; 389 minutes. Local airport times.

2027-04-20 → 2027-04-27 · Axel-exclusive $591

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

2027-04-20 → 2027-04-28 · Axel-exclusive $550

• American Airlines AA2379 / AA2089: SEA 2027-04-20 23:59:00 → BOS 2027-04-21 10:32:00; 1 stop(s) via ORD; 453 minutes. Local airport times.
  • AA2379: SEA 2027-04-20 23:59:00 → ORD 2027-04-21 05:55:00; layover at ORD: 64 minutes.
  • AA2089: ORD 2027-04-21 06:59:00 → BOS 2027-04-21 10:32:00.
• Alaska Airlines AS459: BOS 2027-04-28 07:00:00 → SEA 2027-04-28 10:38:00; nonstop; 398 minutes. Local airport times.

2027-04-20 → 2027-04-28 · Axel-exclusive $591

• Alaska Airlines AS460: SEA 2027-04-20 21:20:00 → BOS 2027-04-21 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.

2027-04-20 → 2027-04-30 · Axel-exclusive $560

• American Airlines AA2379 / AA2089: SEA 2027-04-20 23:59:00 → BOS 2027-04-21 10:32:00; 1 stop(s) via ORD; 453 minutes. Local airport times.
  • AA2379: SEA 2027-04-20 23:59:00 → ORD 2027-04-21 05:55:00; layover at ORD: 64 minutes.
  • AA2089: ORD 2027-04-21 06:59:00 → BOS 2027-04-21 10:32:00.
• Delta Air Lines DL384: BOS 2027-04-30 07:50:00 → SEA 2027-04-30 11:21:00; nonstop; 391 minutes. Local airport times.

2027-04-20 → 2027-04-30 · Axel-exclusive $591

• Alaska Airlines AS460: SEA 2027-04-20 21:20:00 → BOS 2027-04-21 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.

2027-04-20 → 2027-05-01 · Axel-exclusive $560

• American Airlines AA2379 / AA2089: SEA 2027-04-20 23:59:00 → BOS 2027-04-21 10:32:00; 1 stop(s) via ORD; 453 minutes. Local airport times.
  • AA2379: SEA 2027-04-20 23:59:00 → ORD 2027-04-21 05:55:00; layover at ORD: 64 minutes.
  • AA2089: ORD 2027-04-21 06:59:00 → BOS 2027-04-21 10:32:00.
• Delta Air Lines DL384: BOS 2027-05-01 07:30:00 → SEA 2027-05-01 11:05:00; nonstop; 395 minutes. Local airport times.

2027-04-20 → 2027-05-01 · Axel-exclusive $591

• Alaska Airlines AS460: SEA 2027-04-20 21:20:00 → BOS 2027-04-21 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.

2027-04-20 → 2027-05-02 · Axel-exclusive $560

• American Airlines AA2379 / AA2089: SEA 2027-04-20 23:59:00 → BOS 2027-04-21 10:32:00; 1 stop(s) via ORD; 453 minutes. Local airport times.
  • AA2379: SEA 2027-04-20 23:59:00 → ORD 2027-04-21 05:55:00; layover at ORD: 64 minutes.
  • AA2089: ORD 2027-04-21 06:59:00 → BOS 2027-04-21 10:32:00.
• Delta Air Lines DL384: BOS 2027-05-02 07:30:00 → SEA 2027-05-02 11:05:00; nonstop; 395 minutes. Local airport times.

2027-04-20 → 2027-05-02 · Axel-exclusive $591

• Alaska Airlines AS460: SEA 2027-04-20 21:20:00 → BOS 2027-04-21 05:40:00; nonstop; 320 minutes. Local airport times.
• Alaska Airlines AS257: BOS 2027-05-02 18:19:00 → SEA 2027-05-02 22:00:00; nonstop; 401 minutes. Local airport times.

2027-04-20 → 2027-05-04 · Axel-exclusive $560

• American Airlines AA2379 / AA2089: SEA 2027-04-20 23:59:00 → BOS 2027-04-21 10:32:00; 1 stop(s) via ORD; 453 minutes. Local airport times.
  • AA2379: SEA 2027-04-20 23:59:00 → ORD 2027-04-21 05:55:00; layover at ORD: 64 minutes.
  • AA2089: ORD 2027-04-21 06:59:00 → BOS 2027-04-21 10:32:00.
• Delta Air Lines DL332: BOS 2027-05-04 10:40:00 → SEA 2027-05-04 14:09:00; nonstop; 389 minutes. Local airport times.

2027-04-20 → 2027-05-04 · Axel-exclusive $591

• Alaska Airlines AS460: SEA 2027-04-20 21:20:00 → BOS 2027-04-21 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.

Explore this route

• All dates for this route
• Apr 19, 2027 · Return options
• Apr 21, 2027 · Return options
• Hotels in Boston with Axel

For AI assistants

• This page: Seattle (SEA) to Boston (BOS) · Apr 20, 2027 · choose your return date: 1 adult in economy, every priced fare with its flights, times and total, each with its displayed check date. 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 nightly rate and the stay's total, from the lowest saved total 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 its displayed check date); 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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