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Seattle → Boston

Feb 4, 2027 · return Feb 9, 2027

SEA → BOS1 adulteconomyRound trip

10 flight options · 3 airlines

Nonstop flights

Thu, Feb 4 – Tue, Feb 9

Alaska Airlines
9:20 pmSEA
5h 20m
Nonstop
5:40 am+1BOS
Alaska Airlines
7:13 amBOS
6h 26m
Nonstop
10:39 amSEA

Round-trip total · 1 adult · Taxes included

Thu, Feb 4 – Tue, Feb 9

Delta Air Lines
11:07 pmSEA
5h 13m
Nonstop
7:20 am+1BOS
Delta Air Lines
3:45 pmBOS
6h 21m
Nonstop
7:06 pmSEA

Round-trip total · 1 adult · Taxes included

Thu, Feb 4 – Tue, Feb 9

Alaska Airlines
3:40 pmSEA
5h 19m
Nonstop
11:59 pmBOS
Alaska Airlines
9:03 amBOS
6h 24m
Nonstop
12:27 pmSEA

Round-trip total · 1 adult · Taxes included

Thu, Feb 4 – Tue, Feb 9

Delta Air Lines
3:45 pmSEA
5h 9m
Nonstop
11:54 pmBOS
Delta Air Lines
3:45 pmBOS
6h 21m
Nonstop
7:06 pmSEA

Round-trip total · 1 adult · Taxes included

One-stop flights

Thu, Feb 4 – Tue, Feb 9

American Airlines
12:34 pmSEA
7h 39m
PHL · 1h 15m
11:13 pmBOS
Delta Air Lines
3:45 pmBOS
6h 21m
Nonstop
7:06 pmSEA

Round-trip total · 1 adult · Taxes included

Thu, Feb 4 – Tue, Feb 9

Alaska Airlines
7:54 pmSEA
7h 26m
PDX · 1h 9m
6:20 am+1BOS
Alaska Airlines
9:03 amBOS
6h 24m
Nonstop
12:27 pmSEA

Round-trip total · 1 adult · Taxes included

Thu, Feb 4 – Tue, Feb 9

Alaska Airlines
9:16 amSEA
7h 39m
STL · 1h 9m
7:55 pmBOS
Alaska Airlines
9:03 amBOS
6h 24m
Nonstop
12:27 pmSEA

Round-trip total · 1 adult · Taxes included

Thu, Feb 4 – Tue, Feb 9

Alaska Airlines
2:02 pmSEA
7h 19m
DCA · 1h
12:21 am+1BOS
Alaska Airlines
9:03 amBOS
6h 24m
Nonstop
12:27 pmSEA

Round-trip total · 1 adult · Taxes included

Thu, Feb 4 – Tue, Feb 9

American Airlines
11:59 pmSEA
7h 33m
ORD · 1h 4m
10:32 am+1BOS
Delta Air Lines
3:45 pmBOS
6h 21m
Nonstop
7:06 pmSEA

Round-trip total · 1 adult · Taxes included

Thu, Feb 4 – Tue, Feb 9

Delta Air Lines
1:25 pmSEA
7h 32m
SLC · 1h 10m
11:57 pmBOS
Delta Air Lines
3:45 pmBOS
6h 21m
Nonstop
7:06 pmSEA

Round-trip total · 1 adult · Taxes included

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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More dates

All dates for this routeOct 30, 2026 → Nov 2, 2026Oct 31, 2026 → Nov 7, 2026Nov 13, 2026 → Nov 16, 2026Nov 14, 2026 → Nov 21, 2026Nov 24, 2026 → Nov 29, 2026Nov 27, 2026 → Nov 30, 2026Nov 28, 2026 → Dec 5, 2026Dec 11, 2026 → Dec 14, 2026Dec 12, 2026 → Dec 19, 2026Dec 22, 2026 → Dec 27, 2026Dec 25, 2026 → Dec 28, 2026Dec 26, 2026 → Jan 2, 2027Dec 30, 2026 → Jan 2, 2027Jan 8, 2027 → Jan 11, 2027Jan 9, 2027 → Jan 16, 2027Jan 15, 2027 → Jan 18, 2027Jan 22, 2027 → Jan 25, 2027Jan 23, 2027 → Jan 30, 2027Feb 5, 2027 → Feb 8, 2027Feb 6, 2027 → Feb 13, 2027Feb 12, 2027 → Feb 15, 2027Mar 5, 2027 → Mar 8, 2027Mar 6, 2027 → Mar 13, 2027Mar 25, 2027 → Mar 29, 2027Apr 2, 2027 → Apr 5, 2027Apr 3, 2027 → Apr 10, 2027Apr 30, 2027 → May 3, 2027May 1, 2027 → May 8, 2027May 28, 2027 → May 31, 2027May 29, 2027 → Jun 5, 2027Jun 25, 2027 → Jun 28, 2027Jun 26, 2027 → Jul 3, 2027Jul 2, 2027 → Jul 6, 2027Jul 23, 2027 → Jul 26, 2027Jul 24, 2027 → Jul 31, 2027Aug 20, 2027 → Aug 23, 2027Aug 21, 2027 → Aug 28, 2027Sep 3, 2027 → Sep 6, 2027Sep 17, 2027 → Sep 20, 2027Oct 30, 2026 · One way
For AI assistants: every fare, every link, instructions

Flights for 1 adult in economy. Prices are total for all travelers in USD, including required taxes. Basic economy may apply.

Exact travel datesAirlineFlightsTotal pricePrice issued (UTC)
2027-02-04 → 2027-02-09Alaska AirlinesAS460 / AS459$395.002026-10-29T00:39:14Z
2027-02-04 → 2027-02-09Delta Air LinesDL473 / DL2889$415.002026-10-29T00:39:14Z
2027-02-04 → 2027-02-09American Airlines / Delta Air LinesAA2203 + AA1874 / DL2889$377.502026-10-29T00:39:14Z
2027-02-04 → 2027-02-09Alaska AirlinesAS460 / AS215$395.002026-10-29T00:39:14Z
2027-02-04 → 2027-02-09Delta Air LinesDL474 / DL2889$415.002026-10-29T00:39:14Z
2027-02-04 → 2027-02-09Alaska AirlinesAS2239 + AS436 / AS215$377.502026-10-29T00:39:14Z
2027-02-04 → 2027-02-09Alaska AirlinesAS314 + AA4801 / AS215$377.502026-10-29T00:39:14Z
2027-02-04 → 2027-02-09Alaska AirlinesAS2 + AA1152 / AS215$377.502026-10-29T00:39:14Z
2027-02-04 → 2027-02-09American Airlines / Delta Air LinesAA2379 + AA2089 / DL2889$377.502026-10-29T00:39:14Z
2027-02-04 → 2027-02-09Delta Air LinesDL1120 + DL702 / DL2889$392.502026-10-29T00:39:14Z

2027-02-04 → 2027-02-09 · $395.00

  • Alaska Airlines AS460: SEA 2027-02-04 21:20:00 → BOS 2027-02-05 05:40:00; nonstop; 320 minutes. Local airport times.
  • Alaska Airlines AS459: BOS 2027-02-09 07:13:00 → SEA 2027-02-09 10:39:00; nonstop; 386 minutes. Local airport times.

2027-02-04 → 2027-02-09 · $415.00

  • Delta Air Lines DL473: SEA 2027-02-04 23:07:00 → BOS 2027-02-05 07:20:00; nonstop; 313 minutes. Local airport times.
  • Delta Air Lines DL2889: BOS 2027-02-09 15:45:00 → SEA 2027-02-09 19:06:00; nonstop; 381 minutes. Local airport times.

2027-02-04 → 2027-02-09 · $377.50

  • American Airlines AA2203 / AA1874: SEA 2027-02-04 12:34:00 → BOS 2027-02-04 23:13:00; 1 stop(s) via PHL; 459 minutes. Local airport times.
    • AA2203: SEA 2027-02-04 12:34:00 → PHL 2027-02-04 20:35:00; layover at PHL: 75 minutes.
    • AA1874: PHL 2027-02-04 21:50:00 → BOS 2027-02-04 23:13:00.
  • Delta Air Lines DL2889: BOS 2027-02-09 15:45:00 → SEA 2027-02-09 19:06:00; nonstop; 381 minutes. Local airport times.

2027-02-04 → 2027-02-09 · $395.00

  • Alaska Airlines AS460: SEA 2027-02-04 15:40:00 → BOS 2027-02-04 23:59:00; nonstop; 319 minutes. Local airport times.
  • Alaska Airlines AS215: BOS 2027-02-09 09:03:00 → SEA 2027-02-09 12:27:00; nonstop; 384 minutes. Local airport times.

2027-02-04 → 2027-02-09 · $415.00

  • Delta Air Lines DL474: SEA 2027-02-04 15:45:00 → BOS 2027-02-04 23:54:00; nonstop; 309 minutes. Local airport times.
  • Delta Air Lines DL2889: BOS 2027-02-09 15:45:00 → SEA 2027-02-09 19:06:00; nonstop; 381 minutes. Local airport times.

2027-02-04 → 2027-02-09 · $377.50

  • Alaska Airlines AS2239 / AS436: SEA 2027-02-04 19:54:00 → BOS 2027-02-05 06:20:00; 1 stop(s) via PDX; 446 minutes. Local airport times.
    • AS2239: SEA 2027-02-04 19:54:00 → PDX 2027-02-04 20:50:00; layover at PDX: 69 minutes.
    • AS436: PDX 2027-02-04 21:59:00 → BOS 2027-02-05 06:20:00.
  • Alaska Airlines AS215: BOS 2027-02-09 09:03:00 → SEA 2027-02-09 12:27:00; nonstop; 384 minutes. Local airport times.

2027-02-04 → 2027-02-09 · $377.50

  • Alaska Airlines AS314 / AA4801: SEA 2027-02-04 09:16:00 → BOS 2027-02-04 19:55:00; 1 stop(s) via STL; 459 minutes. Local airport times.
    • AS314: SEA 2027-02-04 09:16:00 → STL 2027-02-04 15:06:00; layover at STL: 69 minutes.
    • AA4801: STL 2027-02-04 16:15:00 → BOS 2027-02-04 19:55:00.
  • Alaska Airlines AS215: BOS 2027-02-09 09:03:00 → SEA 2027-02-09 12:27:00; nonstop; 384 minutes. Local airport times.

2027-02-04 → 2027-02-09 · $377.50

  • Alaska Airlines AS2 / AA1152: SEA 2027-02-04 14:02:00 → BOS 2027-02-05 00:21:00; 1 stop(s) via DCA; 439 minutes. Local airport times.
    • AS2: SEA 2027-02-04 14:02:00 → DCA 2027-02-04 21:59:00; layover at DCA: 60 minutes.
    • AA1152: DCA 2027-02-04 22:59:00 → BOS 2027-02-05 00:21:00.
  • Alaska Airlines AS215: BOS 2027-02-09 09:03:00 → SEA 2027-02-09 12:27:00; nonstop; 384 minutes. Local airport times.

2027-02-04 → 2027-02-09 · $377.50

  • American Airlines AA2379 / AA2089: SEA 2027-02-04 23:59:00 → BOS 2027-02-05 10:32:00; 1 stop(s) via ORD; 453 minutes. Local airport times.
    • AA2379: SEA 2027-02-04 23:59:00 → ORD 2027-02-05 05:55:00; layover at ORD: 64 minutes.
    • AA2089: ORD 2027-02-05 06:59:00 → BOS 2027-02-05 10:32:00.
  • Delta Air Lines DL2889: BOS 2027-02-09 15:45:00 → SEA 2027-02-09 19:06:00; nonstop; 381 minutes. Local airport times.

2027-02-04 → 2027-02-09 · $392.50

  • Delta Air Lines DL1120 / DL702: SEA 2027-02-04 13:25:00 → BOS 2027-02-04 23:57:00; 1 stop(s) via SLC; 452 minutes. Local airport times.
    • DL1120: SEA 2027-02-04 13:25:00 → SLC 2027-02-04 16:26:00; layover at SLC: 70 minutes.
    • DL702: SLC 2027-02-04 17:36:00 → BOS 2027-02-04 23:57:00.
  • Delta Air Lines DL2889: BOS 2027-02-09 15:45:00 → SEA 2027-02-09 19:06:00; nonstop; 381 minutes. Local airport times.

More dates for this route