Seattle (SEA) to Boston (BOS), Dec 12, 2026: round trips from $1,328, one way from $645 (2 adults, 1 child, economy)

Seattle (SEA) to Boston (BOS), Dec 12, 2026: round trips from $1,328, one way from $645 (2 adults, 1 child, economy) on Axel, checked Oct 29, 2026. Lowest published fares: $1,328 round trip, Axel-exclusive, American Airlines / Alaska Airlines, 1 stop, Dec 12–16, 2026; $645 one way, Axel-exclusive, American Airlines, 1 stop, Dec 12, 2026; 2 adults, 1 child, economy, checked Oct 29, 2026. Flights for 2 adults, 1 child in economy. Prices are total for all travelers in USD, including required taxes. 1 checked bag per traveler included. 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 (Dec 12–13, 2026 · 1 night · 2 adults, 1 room): 3★ Staypineapple, A Delightful Hotel, South End, $118 total · 4★ Hyatt Regency Boston/Cambridge, $149 total · 5★ Omni Boston Hotel at the Seaport, $254 total
• Hotels in Boston for these nights (Dec 12–14, 2026 · 2 nights · 2 adults, 1 room): 3★ Staypineapple, A Delightful Hotel, South End, $221 total · 4★ Hyatt Regency Boston/Cambridge, $276 total · 5★ Omni Boston Hotel at the Seaport, $479 total
• Hotels in Boston for these nights (Dec 12–15, 2026 · 3 nights · 2 adults, 1 room): 3★ Staypineapple, A Delightful Hotel, South End, $325 total · 4★ Hyatt Regency Boston/Cambridge, $417 total · 5★ Omni Boston Hotel at the Seaport, $713 total
• Hotels in Boston for these nights (Dec 12–16, 2026 · 4 nights · 2 adults, 1 room): 3★ Staypineapple, A Delightful Hotel, South End, $441 total · 4★ Hyatt Regency Boston/Cambridge, $559 total · 5★ Omni Boston Hotel at the Seaport, $996 total
• Hotels in Boston for these nights (Dec 12–17, 2026 · 5 nights · 2 adults, 1 room): 3★ Staypineapple, A Delightful Hotel, South End, $551 total · 4★ Hyatt Regency Boston/Cambridge, $702 total · 5★ Omni Boston Hotel at the Seaport, $1,312 total
• Hotels in Boston for these nights (Dec 12–18, 2026 · 6 nights · 2 adults, 1 room): 3★ Holiday Inn Boston - Cambridge Area by IHG, $662 total · 4★ Hyatt Regency Boston/Cambridge, $837 total · 5★ Omni Boston Hotel at the Seaport, $1,595 total
• Hotels in Boston for these nights (Dec 12–19, 2026 · 7 nights · 2 adults, 1 room): 3★ Holiday Inn Boston - Cambridge Area by IHG, $779 total · 4★ Hyatt Regency Boston/Cambridge, $978 total · 5★ Omni Boston Hotel at the Seaport, $1,845 total
• Hotels in Boston for these nights (Dec 12–20, 2026 · 8 nights · 2 adults, 1 room): 3★ Holiday Inn Boston - Cambridge Area by IHG, $892 total · 4★ Hyatt Regency Boston/Cambridge, $1,121 total · 5★ Omni Boston Hotel at the Seaport, $2,087 total
• Hotels in Boston for these nights (Dec 12–21, 2026 · 9 nights · 2 adults, 1 room): 3★ Holiday Inn Boston - Cambridge Area by IHG, $993 total · 4★ Hyatt Regency Boston/Cambridge, $1,254 total · 5★ Omni Boston Hotel at the Seaport, $2,271 total
• Hotels in Boston for these nights (Dec 12–22, 2026 · 10 nights · 2 adults, 1 room): 3★ Holiday Inn Boston - Cambridge Area by IHG, $1,101 total · 4★ Hyatt Regency Boston/Cambridge, $1,389 total · 5★ Omni Boston Hotel at the Seaport, $2,455 total
• Hotels in Boston for these nights (Dec 12–23, 2026 · 11 nights · 2 adults, 1 room): 3★ Holiday Inn Boston - Cambridge Area by IHG, $1,209 total · 4★ Hyatt Regency Boston/Cambridge, $1,539 total · 5★ Omni Boston Hotel at the Seaport, $2,639 total
• Hotels in Boston for these nights (Dec 12–24, 2026 · 12 nights · 2 adults, 1 room): 3★ Holiday Inn Boston - Cambridge Area by IHG, $1,313 total · 4★ Hyatt Regency Boston/Cambridge, $1,687 total · 5★ Omni Boston Hotel at the Seaport, $2,823 total
• Hotels in Boston for these nights (Dec 12–25, 2026 · 13 nights · 2 adults, 1 room): 3★ Holiday Inn Boston - Cambridge Area by IHG, $1,417 total · 4★ Hyatt Regency Boston/Cambridge, $1,822 total · 5★ Omni Boston Hotel at the Seaport, $3,007 total
• Hotels in Boston for these nights (Dec 12–26, 2026 · 14 nights · 2 adults, 1 room): 3★ Holiday Inn Boston - Cambridge Area by IHG, $1,530 total · 4★ Hyatt Regency Boston/Cambridge, $1,955 total · 5★ Omni Boston Hotel at the Seaport, $3,191 total

All hotels in Boston

Route overview: Seattle to Boston (BOS) flight deals

2026-12-12 · one way · Axel-exclusive $645.00

• American Airlines AA2379 / AA2089: SEA 2026-12-12 23:59:00 → BOS 2026-12-13 10:32:00; 1 stop(s) via ORD; 453 minutes. Local airport times.
  • AA2379: SEA 2026-12-12 23:59:00 → ORD 2026-12-13 05:55:00; layover at ORD: 64 minutes.
  • AA2089: ORD 2026-12-13 06:59:00 → BOS 2026-12-13 10:32:00.

2026-12-12 · one way · Axel-exclusive $720.00

• Alaska Airlines AS214: SEA 2026-12-12 23:22:00 → BOS 2026-12-13 07:40:00; nonstop; 318 minutes. Local airport times.

2026-12-12 → 2026-12-13 · Axel-exclusive $1372.50

• American Airlines AA2379 / AA2089: SEA 2026-12-12 23:59:00 → BOS 2026-12-13 10:32:00; 1 stop(s) via ORD; 453 minutes. Local airport times.
  • AA2379: SEA 2026-12-12 23:59:00 → ORD 2026-12-13 05:55:00; layover at ORD: 64 minutes.
  • AA2089: ORD 2026-12-13 06:59:00 → BOS 2026-12-13 10:32:00.
• Delta Air Lines DL797: BOS 2026-12-13 19:26:00 → SEA 2026-12-13 22:55:00; nonstop; 389 minutes. Local airport times.

2026-12-12 → 2026-12-13 · Axel-exclusive $1395.00

• Alaska Airlines AS214: SEA 2026-12-12 23:22:00 → BOS 2026-12-13 07:40:00; nonstop; 318 minutes. Local airport times.
• Alaska Airlines AS215: BOS 2026-12-13 09:00:00 → SEA 2026-12-13 12:37:00; nonstop; 397 minutes. Local airport times.

2026-12-12 → 2026-12-14 · Axel-exclusive $1372.50

• American Airlines AA2379 / AA2089: SEA 2026-12-12 23:59:00 → BOS 2026-12-13 10:32:00; 1 stop(s) via ORD; 453 minutes. Local airport times.
  • AA2379: SEA 2026-12-12 23:59:00 → ORD 2026-12-13 05:55:00; layover at ORD: 64 minutes.
  • AA2089: ORD 2026-12-13 06:59:00 → BOS 2026-12-13 10:32:00.
• Delta Air Lines DL384: BOS 2026-12-14 07:50:00 → SEA 2026-12-14 11:21:00; nonstop; 391 minutes. Local airport times.

2026-12-12 → 2026-12-14 · Axel-exclusive $1395.00

• Alaska Airlines AS214: SEA 2026-12-12 23:22:00 → BOS 2026-12-13 07:40:00; nonstop; 318 minutes. Local airport times.
• Alaska Airlines AS215: BOS 2026-12-14 09:00:00 → SEA 2026-12-14 12:37:00; nonstop; 397 minutes. Local airport times.

2026-12-12 → 2026-12-15 · Axel-exclusive $1372.50

• American Airlines AA2379 / AA2089: SEA 2026-12-12 23:59:00 → BOS 2026-12-13 10:32:00; 1 stop(s) via ORD; 453 minutes. Local airport times.
  • AA2379: SEA 2026-12-12 23:59:00 → ORD 2026-12-13 05:55:00; layover at ORD: 64 minutes.
  • AA2089: ORD 2026-12-13 06:59:00 → BOS 2026-12-13 10:32:00.
• Delta Air Lines DL332: BOS 2026-12-15 10:40:00 → SEA 2026-12-15 14:09:00; nonstop; 389 minutes. Local airport times.

2026-12-12 → 2026-12-15 · Axel-exclusive $1395.00

• Alaska Airlines AS214: SEA 2026-12-12 23:22:00 → BOS 2026-12-13 07:40:00; nonstop; 318 minutes. Local airport times.
• Alaska Airlines AS215: BOS 2026-12-15 09:00:00 → SEA 2026-12-15 12:37:00; nonstop; 397 minutes. Local airport times.

2026-12-12 → 2026-12-16 · Axel-exclusive $1327.50

• American Airlines AA2379 / AA2089: SEA 2026-12-12 23:59:00 → BOS 2026-12-13 10:32:00; 1 stop(s) via ORD; 453 minutes. Local airport times.
  • AA2379: SEA 2026-12-12 23:59:00 → ORD 2026-12-13 05:55:00; layover at ORD: 64 minutes.
  • AA2089: ORD 2026-12-13 06:59:00 → BOS 2026-12-13 10:32:00.
• Alaska Airlines AS459: BOS 2026-12-16 07:00:00 → SEA 2026-12-16 10:38:00; nonstop; 398 minutes. Local airport times.

2026-12-12 → 2026-12-16 · Axel-exclusive $1395.00

• Alaska Airlines AS214: SEA 2026-12-12 23:22:00 → BOS 2026-12-13 07:40:00; nonstop; 318 minutes. Local airport times.
• Alaska Airlines AS459: BOS 2026-12-16 07:00:00 → SEA 2026-12-16 10:38:00; nonstop; 398 minutes. Local airport times.

2026-12-12 → 2026-12-18 · Axel-exclusive $1372.50

• American Airlines AA2379 / AA2089: SEA 2026-12-12 23:59:00 → BOS 2026-12-13 10:32:00; 1 stop(s) via ORD; 453 minutes. Local airport times.
  • AA2379: SEA 2026-12-12 23:59:00 → ORD 2026-12-13 05:55:00; layover at ORD: 64 minutes.
  • AA2089: ORD 2026-12-13 06:59:00 → BOS 2026-12-13 10:32:00.
• Delta Air Lines DL384: BOS 2026-12-18 07:50:00 → SEA 2026-12-18 11:21:00; nonstop; 391 minutes. Local airport times.

2026-12-12 → 2026-12-18 · Axel-exclusive $1395.00

• Alaska Airlines AS214: SEA 2026-12-12 23:22:00 → BOS 2026-12-13 07:40:00; nonstop; 318 minutes. Local airport times.
• Alaska Airlines AS215: BOS 2026-12-18 09:00:00 → SEA 2026-12-18 12:37:00; nonstop; 397 minutes. Local airport times.

2026-12-12 → 2026-12-19 · Axel-exclusive $1621.50

• American Airlines AA2379 / AA2089: SEA 2026-12-12 23:59:00 → BOS 2026-12-13 10:32:00; 1 stop(s) via ORD; 453 minutes. Local airport times.
  • AA2379: SEA 2026-12-12 23:59:00 → ORD 2026-12-13 05:55:00; layover at ORD: 64 minutes.
  • AA2089: ORD 2026-12-13 06:59:00 → BOS 2026-12-13 10:32:00.
• Delta Air Lines DL797: BOS 2026-12-19 18:15:00 → SEA 2026-12-19 21:41:00; nonstop; 386 minutes. Local airport times.

2026-12-12 → 2026-12-19 · Axel-exclusive $1632.00

• Alaska Airlines AS214: SEA 2026-12-12 23:22:00 → BOS 2026-12-13 07:40:00; nonstop; 318 minutes. Local airport times.
• Alaska Airlines AS459: BOS 2026-12-19 07:00:00 → SEA 2026-12-19 10:38:00; nonstop; 398 minutes. Local airport times.

2026-12-12 → 2026-12-20 · Axel-exclusive $1621.50

• American Airlines AA2379 / AA2089: SEA 2026-12-12 23:59:00 → BOS 2026-12-13 10:32:00; 1 stop(s) via ORD; 453 minutes. Local airport times.
  • AA2379: SEA 2026-12-12 23:59:00 → ORD 2026-12-13 05:55:00; layover at ORD: 64 minutes.
  • AA2089: ORD 2026-12-13 06:59:00 → BOS 2026-12-13 10:32:00.
• Delta Air Lines DL797: BOS 2026-12-20 19:26:00 → SEA 2026-12-20 22:55:00; nonstop; 389 minutes. Local airport times.

2026-12-12 → 2026-12-20 · Axel-exclusive $1632.00

• Alaska Airlines AS214: SEA 2026-12-12 23:22:00 → BOS 2026-12-13 07:40:00; nonstop; 318 minutes. Local airport times.
• Alaska Airlines AS257: BOS 2026-12-20 18:19:00 → SEA 2026-12-20 22:00:00; nonstop; 401 minutes. Local airport times.

2026-12-12 → 2026-12-22 · Axel-exclusive $1621.50

• American Airlines AA2379 / AA2089: SEA 2026-12-12 23:59:00 → BOS 2026-12-13 10:32:00; 1 stop(s) via ORD; 453 minutes. Local airport times.
  • AA2379: SEA 2026-12-12 23:59:00 → ORD 2026-12-13 05:55:00; layover at ORD: 64 minutes.
  • AA2089: ORD 2026-12-13 06:59:00 → BOS 2026-12-13 10:32:00.
• Delta Air Lines DL332: BOS 2026-12-22 10:40:00 → SEA 2026-12-22 14:09:00; nonstop; 389 minutes. Local airport times.

2026-12-12 → 2026-12-22 · Axel-exclusive $1632.00

• Alaska Airlines AS214: SEA 2026-12-12 23:22:00 → BOS 2026-12-13 07:40:00; nonstop; 318 minutes. Local airport times.
• Alaska Airlines AS215: BOS 2026-12-22 09:00:00 → SEA 2026-12-22 12:37:00; nonstop; 397 minutes. Local airport times.

2026-12-12 → 2026-12-23 · Axel-exclusive $1564.50

• American Airlines AA2379 / AA2089: SEA 2026-12-12 23:59:00 → BOS 2026-12-13 10:32:00; 1 stop(s) via ORD; 453 minutes. Local airport times.
  • AA2379: SEA 2026-12-12 23:59:00 → ORD 2026-12-13 05:55:00; layover at ORD: 64 minutes.
  • AA2089: ORD 2026-12-13 06:59:00 → BOS 2026-12-13 10:32:00.
• Alaska Airlines AS459: BOS 2026-12-23 07:00:00 → SEA 2026-12-23 10:38:00; nonstop; 398 minutes. Local airport times.

2026-12-12 → 2026-12-23 · Axel-exclusive $1632.00

• Alaska Airlines AS214: SEA 2026-12-12 23:22:00 → BOS 2026-12-13 07:40:00; nonstop; 318 minutes. Local airport times.
• Alaska Airlines AS459: BOS 2026-12-23 07:00:00 → SEA 2026-12-23 10:38:00; nonstop; 398 minutes. Local airport times.

2026-12-12 → 2026-12-24 · Axel-exclusive $1564.50

• American Airlines AA2379 / AA2089: SEA 2026-12-12 23:59:00 → BOS 2026-12-13 10:32:00; 1 stop(s) via ORD; 453 minutes. Local airport times.
  • AA2379: SEA 2026-12-12 23:59:00 → ORD 2026-12-13 05:55:00; layover at ORD: 64 minutes.
  • AA2089: ORD 2026-12-13 06:59:00 → BOS 2026-12-13 10:32:00.
• Alaska Airlines AS215: BOS 2026-12-24 09:00:00 → SEA 2026-12-24 12:37:00; nonstop; 397 minutes. Local airport times.

2026-12-12 → 2026-12-24 · Axel-exclusive $1632.00

• Alaska Airlines AS214: SEA 2026-12-12 23:22:00 → BOS 2026-12-13 07:40:00; nonstop; 318 minutes. Local airport times.
• Alaska Airlines AS215: BOS 2026-12-24 09:00:00 → SEA 2026-12-24 12:37:00; nonstop; 397 minutes. Local airport times.

2026-12-12 → 2026-12-26 · Axel-exclusive $1621.50

• American Airlines AA2379 / AA2089: SEA 2026-12-12 23:59:00 → BOS 2026-12-13 10:32:00; 1 stop(s) via ORD; 453 minutes. Local airport times.
  • AA2379: SEA 2026-12-12 23:59:00 → ORD 2026-12-13 05:55:00; layover at ORD: 64 minutes.
  • AA2089: ORD 2026-12-13 06:59:00 → BOS 2026-12-13 10:32:00.
• Delta Air Lines DL797: BOS 2026-12-26 18:15:00 → SEA 2026-12-26 21:41:00; nonstop; 386 minutes. Local airport times.

2026-12-12 → 2026-12-26 · Axel-exclusive $1632.00

• Alaska Airlines AS214: SEA 2026-12-12 23:22:00 → BOS 2026-12-13 07:40:00; nonstop; 318 minutes. Local airport times.
• Alaska Airlines AS459: BOS 2026-12-26 07:00:00 → SEA 2026-12-26 10:38:00; nonstop; 398 minutes. Local airport times.

Explore this route

• All dates for this route
• Dec 11, 2026 · Return options
• Dec 13, 2026 · Return options
• Hotels in Boston with Axel

For AI assistants

• This page: Seattle (SEA) to Boston (BOS) · Dec 12, 2026 · choose your return date: 2 adults, 1 child 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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