Seattle (SEA) to Boston (BOS), Jan 31, 2027: round trips from $359, one way from $166

Seattle (SEA) to Boston (BOS), Jan 31, 2027: round trips from $359, one way from $166 on Axel, checked Oct 29, 2026. Lowest published fares: $359 round trip, Axel-exclusive, American Airlines / Alaska Airlines, 1 stop, Jan 31, 2027 – Feb 1, 2027; $166 one way, Axel-exclusive, American Airlines, 1 stop, Jan 31, 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 (Jan 31 – Feb 1, 2027 · 1 night · 2 adults, 1 room): 3★ Holiday Inn Boston - Cambridge Area by IHG, $105 total · 4★ Hilton Boston Park Plaza Hotel, $139 total · 5★ InterContinental Boston by IHG, $262 total
• Hotels in Boston for these nights (Jan 31 – Feb 2, 2027 · 2 nights · 2 adults, 1 room): 3★ Holiday Inn Boston - Cambridge Area by IHG, $228 total · 4★ Hyatt Regency Boston/Cambridge, $295 total · 5★ InterContinental Boston by IHG, $576 total
• Hotels in Boston for these nights (Jan 31 – Feb 3, 2027 · 3 nights · 2 adults, 1 room): 3★ Holiday Inn Boston - Cambridge Area by IHG, $358 total · 4★ Hyatt Regency Boston/Cambridge, $432 total · 5★ Omni Boston Hotel at the Seaport, $904 total
• Hotels in Boston for these nights (Jan 31 – Feb 4, 2027 · 4 nights · 2 adults, 1 room): 3★ Holiday Inn Boston - Cambridge Area by IHG, $480 total · 4★ Hyatt Regency Boston/Cambridge, $566 total · 5★ Omni Boston Hotel at the Seaport, $1,271 total
• Hotels in Boston for these nights (Jan 31 – Feb 5, 2027 · 5 nights · 2 adults, 1 room): 3★ Holiday Inn Boston - Cambridge Area by IHG, $603 total · 4★ Hyatt Regency Boston/Cambridge, $719 total · 5★ Omni Boston Hotel at the Seaport, $1,623 total
• Hotels in Boston for these nights (Jan 31 – Feb 6, 2027 · 6 nights · 2 adults, 1 room): 3★ Holiday Inn Boston - Cambridge Area by IHG, $739 total · 4★ Hyatt Regency Boston/Cambridge, $878 total · 5★ Omni Boston Hotel at the Seaport, $1,969 total
• Hotels in Boston for these nights (Jan 31 – Feb 7, 2027 · 7 nights · 2 adults, 1 room): 3★ Wyndham Boston Beacon Hill, $861 total · 4★ Hyatt Regency Boston/Cambridge, $1,032 total · 5★ Omni Boston Hotel at the Seaport, $2,296 total
• Hotels in Boston for these nights (Jan 31 – Feb 8, 2027 · 8 nights · 2 adults, 1 room): 3★ Holiday Inn Boston - Cambridge Area by IHG, $979 total · 4★ Hyatt Regency Boston/Cambridge, $1,165 total · 5★ Omni Boston Hotel at the Seaport, $2,623 total
• Hotels in Boston for these nights (Jan 31 – Feb 9, 2027 · 9 nights · 2 adults, 1 room): 3★ Wyndham Boston Beacon Hill, $1,099 total · 4★ Hyatt Regency Boston/Cambridge, $1,334 total · 5★ Omni Boston Hotel at the Seaport, $2,965 total
• Hotels in Boston for these nights (Jan 31 – Feb 10, 2027 · 10 nights · 2 adults, 1 room): 3★ Wyndham Boston Beacon Hill, $1,221 total · 4★ Hyatt Regency Boston/Cambridge, $1,495 total · 5★ Omni Boston Hotel at the Seaport, $3,309 total
• Hotels in Boston for these nights (Jan 31 – Feb 11, 2027 · 11 nights · 2 adults, 1 room): 3★ Holiday Inn Boston - Cambridge Area by IHG, $1,355 total · 4★ Hyatt Regency Boston/Cambridge, $1,664 total · 5★ Omni Boston Hotel at the Seaport, $3,653 total
• Hotels in Boston for these nights (Jan 31 – Feb 12, 2027 · 12 nights · 2 adults, 1 room): 3★ Holiday Inn Boston - Cambridge Area by IHG, $1,481 total · 4★ Hyatt Regency Boston/Cambridge, $1,810 total · 5★ Omni Boston Hotel at the Seaport, $3,977 total
• Hotels in Boston for these nights (Jan 31 – Feb 13, 2027 · 13 nights · 2 adults, 1 room): 3★ Holiday Inn Boston - Cambridge Area by IHG, $1,642 total · 4★ Hilton Boston Park Plaza Hotel, $1,995 total · 5★ Omni Boston Hotel at the Seaport, $4,311 total
• Hotels in Boston for these nights (Jan 31 – Feb 14, 2027 · 14 nights · 2 adults, 1 room): 3★ Holiday Inn Boston - Cambridge Area by IHG, $1,814 total · 4★ Hilton Boston Park Plaza Hotel, $2,139 total · 5★ Omni Boston Hotel at the Seaport, $4,648 total

All hotels in Boston

Route overview: Seattle to Boston (BOS) flight deals

2027-01-31 · one way · Axel-exclusive $166.25

• American Airlines AA2379 / AA2089: SEA 2027-01-31 23:59:00 → BOS 2027-02-01 10:32:00; 1 stop(s) via ORD; 453 minutes. Local airport times.
  • AA2379: SEA 2027-01-31 23:59:00 → ORD 2027-02-01 05:55:00; layover at ORD: 64 minutes.
  • AA2089: ORD 2027-02-01 06:59:00 → BOS 2027-02-01 10:32:00.

2027-01-31 · one way · Axel-exclusive $194.75

• Alaska Airlines AS460: SEA 2027-01-31 21:20:00 → BOS 2027-02-01 05:40:00; nonstop; 320 minutes. Local airport times.

2027-01-31 → 2027-02-01 · Axel-exclusive $359.00

• American Airlines AA2379 / AA2089: SEA 2027-01-31 23:59:00 → BOS 2027-02-01 10:32:00; 1 stop(s) via ORD; 453 minutes. Local airport times.
  • AA2379: SEA 2027-01-31 23:59:00 → ORD 2027-02-01 05:55:00; layover at ORD: 64 minutes.
  • AA2089: ORD 2027-02-01 06:59:00 → BOS 2027-02-01 10:32:00.
• Alaska Airlines AS257: BOS 2027-02-01 18:22:00 → SEA 2027-02-01 22:00:00; nonstop; 398 minutes. Local airport times.

2027-01-31 → 2027-02-01 · Axel-exclusive $385.13

• Alaska Airlines AS460: SEA 2027-01-31 21:20:00 → BOS 2027-02-01 05:40:00; nonstop; 320 minutes. Local airport times.
• Alaska Airlines AS215: BOS 2027-02-01 09:00:00 → SEA 2027-02-01 12:37:00; nonstop; 397 minutes. Local airport times.

2027-01-31 → 2027-02-02 · Axel-exclusive $369.00

• American Airlines AA2379 / AA2089: SEA 2027-01-31 23:59:00 → BOS 2027-02-01 10:32:00; 1 stop(s) via ORD; 453 minutes. Local airport times.
  • AA2379: SEA 2027-01-31 23:59:00 → ORD 2027-02-01 05:55:00; layover at ORD: 64 minutes.
  • AA2089: ORD 2027-02-01 06:59:00 → BOS 2027-02-01 10:32:00.
• Delta Air Lines DL332: BOS 2027-02-02 10:40:00 → SEA 2027-02-02 14:09:00; nonstop; 389 minutes. Local airport times.

2027-01-31 → 2027-02-02 · Axel-exclusive $385.13

• Alaska Airlines AS460: SEA 2027-01-31 21:20:00 → BOS 2027-02-01 05:40:00; nonstop; 320 minutes. Local airport times.
• Alaska Airlines AS215: BOS 2027-02-02 09:00:00 → SEA 2027-02-02 12:37:00; nonstop; 397 minutes. Local airport times.

2027-01-31 → 2027-02-03 · Axel-exclusive $359.00

• American Airlines AA2379 / AA2089: SEA 2027-01-31 23:59:00 → BOS 2027-02-01 10:32:00; 1 stop(s) via ORD; 453 minutes. Local airport times.
  • AA2379: SEA 2027-01-31 23:59:00 → ORD 2027-02-01 05:55:00; layover at ORD: 64 minutes.
  • AA2089: ORD 2027-02-01 06:59:00 → BOS 2027-02-01 10:32:00.
• Alaska Airlines AS459: BOS 2027-02-03 07:00:00 → SEA 2027-02-03 10:38:00; nonstop; 398 minutes. Local airport times.

2027-01-31 → 2027-02-03 · Axel-exclusive $385.13

• Alaska Airlines AS460: SEA 2027-01-31 21:20:00 → BOS 2027-02-01 05:40:00; nonstop; 320 minutes. Local airport times.
• Alaska Airlines AS459: BOS 2027-02-03 07:00:00 → SEA 2027-02-03 10:38:00; nonstop; 398 minutes. Local airport times.

2027-01-31 → 2027-02-04 · Axel-exclusive $359.00

• American Airlines AA2379 / AA2089: SEA 2027-01-31 23:59:00 → BOS 2027-02-01 10:32:00; 1 stop(s) via ORD; 453 minutes. Local airport times.
  • AA2379: SEA 2027-01-31 23:59:00 → ORD 2027-02-01 05:55:00; layover at ORD: 64 minutes.
  • AA2089: ORD 2027-02-01 06:59:00 → BOS 2027-02-01 10:32:00.
• Alaska Airlines AS215: BOS 2027-02-04 09:00:00 → SEA 2027-02-04 12:37:00; nonstop; 397 minutes. Local airport times.

2027-01-31 → 2027-02-04 · Axel-exclusive $385.13

• Alaska Airlines AS460: SEA 2027-01-31 21:20:00 → BOS 2027-02-01 05:40:00; nonstop; 320 minutes. Local airport times.
• Alaska Airlines AS215: BOS 2027-02-04 09:00:00 → SEA 2027-02-04 12:37:00; nonstop; 397 minutes. Local airport times.

2027-01-31 → 2027-02-06 · Axel-exclusive $369.00

• American Airlines AA2379 / AA2089: SEA 2027-01-31 23:59:00 → BOS 2027-02-01 10:32:00; 1 stop(s) via ORD; 453 minutes. Local airport times.
  • AA2379: SEA 2027-01-31 23:59:00 → ORD 2027-02-01 05:55:00; layover at ORD: 64 minutes.
  • AA2089: ORD 2027-02-01 06:59:00 → BOS 2027-02-01 10:32:00.
• Delta Air Lines DL384: BOS 2027-02-06 07:30:00 → SEA 2027-02-06 11:05:00; nonstop; 395 minutes. Local airport times.

2027-01-31 → 2027-02-06 · Axel-exclusive $385.13

• Alaska Airlines AS460: SEA 2027-01-31 21:20:00 → BOS 2027-02-01 05:40:00; nonstop; 320 minutes. Local airport times.
• Alaska Airlines AS459: BOS 2027-02-06 07:00:00 → SEA 2027-02-06 10:38:00; nonstop; 398 minutes. Local airport times.

2027-01-31 → 2027-02-07 · Axel-exclusive $369.00

• American Airlines AA2379 / AA2089: SEA 2027-01-31 23:59:00 → BOS 2027-02-01 10:32:00; 1 stop(s) via ORD; 453 minutes. Local airport times.
  • AA2379: SEA 2027-01-31 23:59:00 → ORD 2027-02-01 05:55:00; layover at ORD: 64 minutes.
  • AA2089: ORD 2027-02-01 06:59:00 → BOS 2027-02-01 10:32:00.
• Delta Air Lines DL384: BOS 2027-02-07 07:30:00 → SEA 2027-02-07 11:05:00; nonstop; 395 minutes. Local airport times.

2027-01-31 → 2027-02-07 · Axel-exclusive $385.13

• Alaska Airlines AS460: SEA 2027-01-31 21:20:00 → BOS 2027-02-01 05:40:00; nonstop; 320 minutes. Local airport times.
• Alaska Airlines AS257: BOS 2027-02-07 18:19:00 → SEA 2027-02-07 22:00:00; nonstop; 401 minutes. Local airport times.

2027-01-31 → 2027-02-08 · Axel-exclusive $369.00

• American Airlines AA2379 / AA2089: SEA 2027-01-31 23:59:00 → BOS 2027-02-01 10:32:00; 1 stop(s) via ORD; 453 minutes. Local airport times.
  • AA2379: SEA 2027-01-31 23:59:00 → ORD 2027-02-01 05:55:00; layover at ORD: 64 minutes.
  • AA2089: ORD 2027-02-01 06:59:00 → BOS 2027-02-01 10:32:00.
• Delta Air Lines DL384: BOS 2027-02-08 07:50:00 → SEA 2027-02-08 11:21:00; nonstop; 391 minutes. Local airport times.

2027-01-31 → 2027-02-08 · Axel-exclusive $385.13

• Alaska Airlines AS460: SEA 2027-01-31 21:20:00 → BOS 2027-02-01 05:40:00; nonstop; 320 minutes. Local airport times.
• Alaska Airlines AS215: BOS 2027-02-08 09:00:00 → SEA 2027-02-08 12:37:00; nonstop; 397 minutes. Local airport times.

2027-01-31 → 2027-02-10 · Axel-exclusive $359.00

• American Airlines AA2379 / AA2089: SEA 2027-01-31 23:59:00 → BOS 2027-02-01 10:32:00; 1 stop(s) via ORD; 453 minutes. Local airport times.
  • AA2379: SEA 2027-01-31 23:59:00 → ORD 2027-02-01 05:55:00; layover at ORD: 64 minutes.
  • AA2089: ORD 2027-02-01 06:59:00 → BOS 2027-02-01 10:32:00.
• Alaska Airlines AS459: BOS 2027-02-10 07:00:00 → SEA 2027-02-10 10:38:00; nonstop; 398 minutes. Local airport times.

2027-01-31 → 2027-02-10 · Axel-exclusive $385.13

• Alaska Airlines AS460: SEA 2027-01-31 21:20:00 → BOS 2027-02-01 05:40:00; nonstop; 320 minutes. Local airport times.
• Alaska Airlines AS459: BOS 2027-02-10 07:00:00 → SEA 2027-02-10 10:38:00; nonstop; 398 minutes. Local airport times.

2027-01-31 → 2027-02-11 · Axel-exclusive $359.00

• American Airlines AA2379 / AA2089: SEA 2027-01-31 23:59:00 → BOS 2027-02-01 10:32:00; 1 stop(s) via ORD; 453 minutes. Local airport times.
  • AA2379: SEA 2027-01-31 23:59:00 → ORD 2027-02-01 05:55:00; layover at ORD: 64 minutes.
  • AA2089: ORD 2027-02-01 06:59:00 → BOS 2027-02-01 10:32:00.
• Alaska Airlines AS215: BOS 2027-02-11 09:00:00 → SEA 2027-02-11 12:37:00; nonstop; 397 minutes. Local airport times.

2027-01-31 → 2027-02-11 · Axel-exclusive $385.13

• Alaska Airlines AS460: SEA 2027-01-31 21:20:00 → BOS 2027-02-01 05:40:00; nonstop; 320 minutes. Local airport times.
• Alaska Airlines AS215: BOS 2027-02-11 09:00:00 → SEA 2027-02-11 12:37:00; nonstop; 397 minutes. Local airport times.

2027-01-31 → 2027-02-12 · Axel-exclusive $400.13

• American Airlines AA2379 / AA2089: SEA 2027-01-31 23:59:00 → BOS 2027-02-01 10:32:00; 1 stop(s) via ORD; 453 minutes. Local airport times.
  • AA2379: SEA 2027-01-31 23:59:00 → ORD 2027-02-01 05:55:00; layover at ORD: 64 minutes.
  • AA2089: ORD 2027-02-01 06:59:00 → BOS 2027-02-01 10:32:00.
• Delta Air Lines DL384: BOS 2027-02-12 07:50:00 → SEA 2027-02-12 11:21:00; nonstop; 391 minutes. Local airport times.

2027-01-31 → 2027-02-12 · Axel-exclusive $414.76

• Alaska Airlines AS460: SEA 2027-01-31 21:20:00 → BOS 2027-02-01 05:40:00; nonstop; 320 minutes. Local airport times.
• Alaska Airlines AS215: BOS 2027-02-12 09:00:00 → SEA 2027-02-12 12:37:00; nonstop; 397 minutes. Local airport times.

2027-01-31 → 2027-02-14 · Axel-exclusive $400.13

• American Airlines AA2379 / AA2089: SEA 2027-01-31 23:59:00 → BOS 2027-02-01 10:32:00; 1 stop(s) via ORD; 453 minutes. Local airport times.
  • AA2379: SEA 2027-01-31 23:59:00 → ORD 2027-02-01 05:55:00; layover at ORD: 64 minutes.
  • AA2089: ORD 2027-02-01 06:59:00 → BOS 2027-02-01 10:32:00.
• Delta Air Lines DL384: BOS 2027-02-14 07:30:00 → SEA 2027-02-14 11:05:00; nonstop; 395 minutes. Local airport times.

2027-01-31 → 2027-02-14 · Axel-exclusive $414.76

• Alaska Airlines AS460: SEA 2027-01-31 21:20:00 → BOS 2027-02-01 05:40:00; nonstop; 320 minutes. Local airport times.
• Alaska Airlines AS257: BOS 2027-02-14 18:19:00 → SEA 2027-02-14 22:00:00; nonstop; 401 minutes. Local airport times.

Explore this route

• All dates for this route
• Jan 30, 2027 · Return options
• Feb 1, 2027 · Return options
• Hotels in Boston with Axel

For AI assistants

• This page: Seattle (SEA) to Boston (BOS) · Jan 31, 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.
• Follow supplied links. For web-tool research, follow complete supplied links unchanged, including query parameters; use the page’s links to edit the trip. Constructed URLs may be rejected before reaching Axel. A completed fresh trip opens flight results first. Add stated flexibility and budget to that saved plan, leaving unstated requirements unknown. Edits create a new snapshot; use its results and review links.
• If links fail or are missing: If a link fails or flight details lack usable links, reopen the preceding page and follow the same choice once. Keep refreshed links unchanged and preserve the trip and selections. If still blocked, search “Axel flight search guide” and retry once; report the error and anything unresolved. Recovery: Axel Seattle to Boston (BOS) flight deals · Flight search guide.
• Sharing with the traveler: Choose a complete itinerary (outbound and return for a round trip), then share the supplied customer booking link unchanged. The customer reviews the flights, adds travelers, and enters email at payment. Do not collect email in chat. Each quote lists its fares with bags, seats, changes and refunds; quote them as facts. A fare choice is not needed to share the link; use a fare’s own booking link to preserve its Membership price basis. Ask only for essential missing trip details. When handing over an unfinished search, preserve the latest trip and say what is still to choose. If no supplied link matches the latest trip, construct https://helloaxel.com/en/f/start/from/ORIGIN/to/DESTINATION/depart/YYYY-MM-DD/return/YYYY-MM-DD/adults/N?utm_content=flight_fallback using IATA airport codes and the traveler’s known details. Omit unknowns; for one way replace /return/YYYY-MM-DD with /trip/oneway. Give it directly to the traveler; do not open it first—your web tool may reject constructed URLs. Complete links open Flight Guide and start searching. Preferences and advanced options.

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