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Route overview: Seattle to Boston (BOS) flight deals

Seattle (SEA) to Boston (BOS), Jan 24–27, 2027: from $424 round trip

Seattle (SEA) to Boston (BOS), Jan 24–27, 2027: from $424 round trip on Axel, checked Oct 29, 2026. Lowest published fare: $424 round trip, Axel-exclusive, American Airlines / Alaska Airlines, 1 stop, Jan 24–27, 2027, 1 adult, economy, checked Oct 29, 2026.

SEA → BOS1 adulteconomyBasic economy excludedRound trip

9 flight options · 3 airlines

Nonstop flights

Sun, Jan 24 – Wed, Jan 27

Alaska Airlines
9:20 pmSEA
5h 20m
Nonstop
5:40 am+1BOS
Alaska Airlines
7:00 amBOS
6h 38m
Nonstop
10:38 amSEA

Round-trip total · 1 adult · Taxes included

Availability is checked when you select these flights.

Sun, Jan 24 – Wed, Jan 27

Delta Air Lines
3:55 pmSEA
5h 18m
Nonstop
12:13 am+1BOS
Delta Air Lines
7:30 amBOS
6h 35m
Nonstop
11:05 amSEA

Round-trip total · 1 adult · Taxes included

Availability is checked when you select these flights.

Sun, Jan 24 – Wed, Jan 27

Alaska Airlines
3:35 pmSEA
5h 24m
Nonstop
11:59 pmBOS
Alaska Airlines
5:44 pmBOS
6h 24m
Nonstop
9:08 pmSEA

Round-trip total · 1 adult · Taxes included

Availability is checked when you select these flights.

One-stop flights

Sun, Jan 24 – Wed, Jan 27

American Airlines
11:59 pmSEA
7h 33m
ORD · 1h 4m
10:32 am+1BOS
Alaska Airlines
7:00 amBOS
6h 38m
Nonstop
10:38 amSEA

Round-trip total · 1 adult · Taxes included

Availability is checked when you select these flights.

Sun, Jan 24 – Wed, Jan 27

American Airlines
12:34 pmSEA
7h 39m
PHL · 1h 15m
11:13 pmBOS
Alaska Airlines
7:00 amBOS
6h 38m
Nonstop
10:38 amSEA

Round-trip total · 1 adult · Taxes included

Availability is checked when you select these flights.

Sun, Jan 24 – Wed, Jan 27

Delta Air Lines
1:25 pmSEA
7h 32m
SLC · 1h 10m
11:57 pmBOS
Delta Air Lines
5:30 amBOS
8h 39m
DTW · 1h 3m
11:09 amSEA

Round-trip total · 1 adult · Taxes included

Availability is checked when you select these flights.

Sun, Jan 24 – Wed, Jan 27

Alaska Airlines
9:16 amSEA
7h 39m
STL · 1h 9m
7:55 pmBOS
Alaska Airlines
7:00 amBOS
6h 38m
Nonstop
10:38 amSEA

Round-trip total · 1 adult · Taxes included

Availability is checked when you select these flights.

Sun, Jan 24 – Wed, Jan 27

Alaska Airlines
2:02 pmSEA
7h 19m
DCA · 1h
12:21 am+1BOS
Alaska Airlines
7:00 amBOS
6h 38m
Nonstop
10:38 amSEA

Round-trip total · 1 adult · Taxes included

Availability is checked when you select these flights.

Sun, Jan 24 – Wed, Jan 27

Delta Air Lines
3:55 pmSEA
5h 17m
Nonstop
12:12 am+1BOS
Delta Air Lines
5:30 amBOS
8h 39m
DTW · 1h 3m
11:09 amSEA

Round-trip total · 1 adult · Taxes included

Availability is checked when you select these flights.

Hotels for these nights (Jan 24–27, 2027 · 3 nights · 2 adults, 1 room): 3★ The Verb Hotel · 4★ The Eliot Hotel · 5★ Boston Harbor Hotel

Make this trip yours

SEA ⇄ BOS

Economy

Adults 12+ · Children 2–11. For infants under 2, tell Axel after you see prices.

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Explore this route

All dates for this routeJan 23, 2027 · Return optionsJan 25, 2027 · Return optionsHotels in Boston with Axel
For AI assistants: every fare, every link, instructions

Seattle (SEA) to Boston (BOS), Jan 24–27, 2027: from $424 round trip on Axel, checked Oct 29, 2026. Lowest published fare: $424 round trip, Axel-exclusive, American Airlines / Alaska Airlines, 1 stop, Jan 24–27, 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 excluded.

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.

Exact travel datesAirlineFlightsTimes, duration, stopsTotal pricePrice issued (UTC)
2027-01-24 → 2027-01-27Alaska AirlinesAS460 / AS45921:20:00→05:40:00 5h 20m nonstop · 07:00:00→10:38:00 6h 38m nonstop · no basic economyAxel-exclusive $455.262026-10-29T00:39:14Z
2027-01-24 → 2027-01-27Delta Air LinesDL876 / DL38415:55:00→00:13:00 5h 18m nonstop · 07:30:00→11:05:00 6h 35m nonstop · no basic economyAxel-exclusive $474.262026-10-29T00:39:14Z
2027-01-24 → 2027-01-27American Airlines / Alaska AirlinesAA2379 + AA2089 / AS45923:59:00→10:32:00 7h 33m 1 stop via ORD · 07:00:00→10:38:00 6h 38m nonstop · no basic economyAxel-exclusive $424.132026-10-29T00:39:14Z
2027-01-24 → 2027-01-27Alaska AirlinesAS460 / AS25715:35:00→23:59:00 5h 24m nonstop · 17:44:00→21:08:00 6h 24m nonstop · no basic economyAxel-exclusive $455.262026-10-29T00:39:14Z
2027-01-24 → 2027-01-27American Airlines / Alaska AirlinesAA2203 + AA1874 / AS45912:34:00→23:13:00 7h 39m 1 stop via PHL · 07:00:00→10:38:00 6h 38m nonstop · no basic economyAxel-exclusive $424.132026-10-29T00:39:14Z
2027-01-24 → 2027-01-27Delta Air LinesDL1120 + DL702 / DL1019 + DL73413:25:00→23:57:00 7h 32m 1 stop via SLC · 05:30:00→11:09:00 8h 39m 1 stop via DTW · no basic economyAxel-exclusive $431.502026-10-29T00:39:14Z
2027-01-24 → 2027-01-27Alaska AirlinesAS314 + AA4801 / AS45909:16:00→19:55:00 7h 39m 1 stop via STL · 07:00:00→10:38:00 6h 38m nonstop · no basic economyAxel-exclusive $438.632026-10-29T00:39:14Z
2027-01-24 → 2027-01-27Alaska AirlinesAS2 + AA1152 / AS45914:02:00→00:21:00 7h 19m 1 stop via DCA · 07:00:00→10:38:00 6h 38m nonstop · no basic economyAxel-exclusive $438.632026-10-29T00:39:14Z
2027-01-24 → 2027-01-27Delta Air LinesDL876 / DL1019 + DL73415:55:00→00:12:00 5h 17m nonstop · 05:30:00→11:09:00 8h 39m 1 stop via DTW · no basic economyAxel-exclusive $452.882026-10-29T00:39:14Z

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.

All hotels in Boston

Route overview: Seattle to Boston (BOS) flight deals

2027-01-24 → 2027-01-27 · Axel-exclusive $455.26

  • Alaska Airlines AS460: SEA 2027-01-24 21:20:00 → BOS 2027-01-25 05:40:00; nonstop; 320 minutes. Local airport times.
  • Alaska Airlines AS459: BOS 2027-01-27 07:00:00 → SEA 2027-01-27 10:38:00; nonstop; 398 minutes. Local airport times.

2027-01-24 → 2027-01-27 · Axel-exclusive $474.26

  • Delta Air Lines DL876: SEA 2027-01-24 15:55:00 → BOS 2027-01-25 00:13:00; nonstop; 318 minutes. Local airport times.
  • Delta Air Lines DL384: BOS 2027-01-27 07:30:00 → SEA 2027-01-27 11:05:00; nonstop; 395 minutes. Local airport times.

2027-01-24 → 2027-01-27 · Axel-exclusive $424.13

  • American Airlines AA2379 / AA2089: SEA 2027-01-24 23:59:00 → BOS 2027-01-25 10:32:00; 1 stop(s) via ORD; 453 minutes. Local airport times.
    • AA2379: SEA 2027-01-24 23:59:00 → ORD 2027-01-25 05:55:00; layover at ORD: 64 minutes.
    • AA2089: ORD 2027-01-25 06:59:00 → BOS 2027-01-25 10:32:00.
  • Alaska Airlines AS459: BOS 2027-01-27 07:00:00 → SEA 2027-01-27 10:38:00; nonstop; 398 minutes. Local airport times.

2027-01-24 → 2027-01-27 · Axel-exclusive $455.26

  • Alaska Airlines AS460: SEA 2027-01-24 15:35:00 → BOS 2027-01-24 23:59:00; nonstop; 324 minutes. Local airport times.
  • Alaska Airlines AS257: BOS 2027-01-27 17:44:00 → SEA 2027-01-27 21:08:00; nonstop; 384 minutes. Local airport times.

2027-01-24 → 2027-01-27 · Axel-exclusive $424.13

  • American Airlines AA2203 / AA1874: SEA 2027-01-24 12:34:00 → BOS 2027-01-24 23:13:00; 1 stop(s) via PHL; 459 minutes. Local airport times.
    • AA2203: SEA 2027-01-24 12:34:00 → PHL 2027-01-24 20:35:00; layover at PHL: 75 minutes.
    • AA1874: PHL 2027-01-24 21:50:00 → BOS 2027-01-24 23:13:00.
  • Alaska Airlines AS459: BOS 2027-01-27 07:00:00 → SEA 2027-01-27 10:38:00; nonstop; 398 minutes. Local airport times.

2027-01-24 → 2027-01-27 · Axel-exclusive $431.50

  • Delta Air Lines DL1120 / DL702: SEA 2027-01-24 13:25:00 → BOS 2027-01-24 23:57:00; 1 stop(s) via SLC; 452 minutes. Local airport times.
    • DL1120: SEA 2027-01-24 13:25:00 → SLC 2027-01-24 16:26:00; layover at SLC: 70 minutes.
    • DL702: SLC 2027-01-24 17:36:00 → BOS 2027-01-24 23:57:00.
  • Delta Air Lines DL1019 / DL734: BOS 2027-01-27 05:30:00 → SEA 2027-01-27 11:09:00; 1 stop(s) via DTW; 519 minutes. Local airport times.
    • DL1019: BOS 2027-01-27 05:30:00 → DTW 2027-01-27 07:52:00; layover at DTW: 63 minutes.
    • DL734: DTW 2027-01-27 08:55:00 → SEA 2027-01-27 11:09:00.

2027-01-24 → 2027-01-27 · Axel-exclusive $438.63

  • Alaska Airlines AS314 / AA4801: SEA 2027-01-24 09:16:00 → BOS 2027-01-24 19:55:00; 1 stop(s) via STL; 459 minutes. Local airport times.
    • AS314: SEA 2027-01-24 09:16:00 → STL 2027-01-24 15:06:00; layover at STL: 69 minutes.
    • AA4801: STL 2027-01-24 16:15:00 → BOS 2027-01-24 19:55:00.
  • Alaska Airlines AS459: BOS 2027-01-27 07:00:00 → SEA 2027-01-27 10:38:00; nonstop; 398 minutes. Local airport times.

2027-01-24 → 2027-01-27 · Axel-exclusive $438.63

  • Alaska Airlines AS2 / AA1152: SEA 2027-01-24 14:02:00 → BOS 2027-01-25 00:21:00; 1 stop(s) via DCA; 439 minutes. Local airport times.
    • AS2: SEA 2027-01-24 14:02:00 → DCA 2027-01-24 21:59:00; layover at DCA: 60 minutes.
    • AA1152: DCA 2027-01-24 22:59:00 → BOS 2027-01-25 00:21:00.
  • Alaska Airlines AS459: BOS 2027-01-27 07:00:00 → SEA 2027-01-27 10:38:00; nonstop; 398 minutes. Local airport times.

2027-01-24 → 2027-01-27 · Axel-exclusive $452.88

  • Delta Air Lines DL876: SEA 2027-01-24 15:55:00 → BOS 2027-01-25 00:12:00; nonstop; 317 minutes. Local airport times.
  • Delta Air Lines DL1019 / DL734: BOS 2027-01-27 05:30:00 → SEA 2027-01-27 11:09:00; 1 stop(s) via DTW; 519 minutes. Local airport times.
    • DL1019: BOS 2027-01-27 05:30:00 → DTW 2027-01-27 07:52:00; layover at DTW: 63 minutes.
    • DL734: DTW 2027-01-27 08:55:00 → SEA 2027-01-27 11:09:00.

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

For AI assistants

  • This page: Seattle (SEA) to Boston (BOS) · Jan 24, 2027 · return Jan 27, 2027: 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 priced row's price link opens the live search for this row's exact dates and travelers; the live results list the same flights with the current total and the traveler's booking link, and name the fare's inclusions (bags, seats, changes), which this page does not. A changed price or flight shows there. Other dates or travelers are not priced here: Choose travelers and dates prices the traveler's own 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.