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Seattle → Boston

Dec 13, 2026 · return Dec 18, 2026

SEA → BOS1 adulteconomyRound trip

10 flight options · 3 airlines

Nonstop flights

Sun, Dec 13 – Fri, Dec 18

Alaska Airlines
9:21 pmSEA
5h 19m
Nonstop
5:40 am+1BOS
Alaska Airlines
9:00 amBOS
6h 37m
Nonstop
12:37 pmSEA

Round-trip total · 1 adult · Taxes included

Sun, Dec 13 – Fri, Dec 18

Delta Air Lines
11:45 amSEA
5h 14m
Nonstop
7:59 pmBOS
Delta Air Lines
7:50 amBOS
6h 31m
Nonstop
11:21 amSEA

Round-trip total · 1 adult · Taxes included

Sun, Dec 13 – Fri, Dec 18

Alaska Airlines
3:40 pmSEA
5h 19m
Nonstop
11:59 pmBOS
Alaska Airlines
9:00 amBOS
6h 37m
Nonstop
12:37 pmSEA

Round-trip total · 1 adult · Taxes included

Sun, Dec 13 – Fri, Dec 18

Delta Air Lines
3:45 pmSEA
5h 17m
Nonstop
12:02 am+1BOS
Delta Air Lines
7:50 amBOS
6h 31m
Nonstop
11:21 amSEA

Round-trip total · 1 adult · Taxes included

One-stop flights

Sun, Dec 13 – Fri, Dec 18

American Airlines
12:34 pmSEA
7h 39m
PHL · 1h 15m
11:13 pmBOS
Delta Air Lines
7:50 amBOS
6h 31m
Nonstop
11:21 amSEA

Round-trip total · 1 adult · Taxes included

Sun, Dec 13 – Fri, Dec 18

Alaska Airlines
2:02 pmSEA
7h 19m
DCA · 1h
12:21 am+1BOS
Alaska Airlines
9:00 amBOS
6h 37m
Nonstop
12:37 pmSEA

Round-trip total · 1 adult · Taxes included

Sun, Dec 13 – Fri, Dec 18

Alaska Airlines
9:16 amSEA
7h 39m
STL · 1h 9m
7:55 pmBOS
Alaska Airlines
9:00 amBOS
6h 37m
Nonstop
12:37 pmSEA

Round-trip total · 1 adult · Taxes included

Sun, Dec 13 – Fri, Dec 18

Alaska Airlines
7:54 pmSEA
7h 26m
PDX · 1h 9m
6:20 am+1BOS
Alaska Airlines
9:00 amBOS
6h 37m
Nonstop
12:37 pmSEA

Round-trip total · 1 adult · Taxes included

Sun, Dec 13 – Fri, Dec 18

American Airlines
11:59 pmSEA
7h 33m
ORD · 1h 4m
10:32 am+1BOS
Delta Air Lines
7:50 amBOS
6h 31m
Nonstop
11:21 amSEA

Round-trip total · 1 adult · Taxes included

Sun, Dec 13 – Fri, Dec 18

Delta Air Lines
3:45 pmSEA
5h 9m
Nonstop
11:54 pmBOS
Delta Air Lines
5:30 amBOS
8h 39m
DTW · 1h 3m
11:09 amSEA

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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Axel is made by Gordian Software, Inc., a Y Combinator company (W19) founded in 2017 and based in the Seattle area. The company is led by CEO Stephen Grabowski, formerly of Skyscanner. How Axel works · About

More dates

All dates for this routeNov 24, 2026 → Nov 29, 2026Dec 22, 2026 → Dec 27, 2026Dec 30, 2026 → Jan 2, 2027Jan 15, 2027 → Jan 18, 2027Oct 30, 2026 → Nov 2, 2026Oct 31, 2026 → Nov 7, 2026Nov 27, 2026 → Nov 30, 2026Nov 28, 2026 → Dec 5, 2026Dec 25, 2026 → Dec 28, 2026Dec 26, 2026 → Jan 2, 2027Jan 22, 2027 → Jan 25, 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)
2026-12-13 → 2026-12-18Alaska AirlinesAS214 / AS215$395.002026-10-29T00:39:14Z
2026-12-13 → 2026-12-18Delta Air LinesDL438 / DL384$415.002026-10-29T00:39:14Z
2026-12-13 → 2026-12-18American Airlines / Delta Air LinesAA2203 + AA1874 / DL384$377.502026-10-29T00:39:14Z
2026-12-13 → 2026-12-18Alaska AirlinesAS460 / AS215$395.002026-10-29T00:39:14Z
2026-12-13 → 2026-12-18Delta Air LinesDL474 / DL384$415.002026-10-29T00:39:14Z
2026-12-13 → 2026-12-18Alaska AirlinesAS2 + AA1152 / AS215$377.502026-10-29T00:39:14Z
2026-12-13 → 2026-12-18Alaska AirlinesAS314 + AA4801 / AS215$377.502026-10-29T00:39:14Z
2026-12-13 → 2026-12-18Alaska AirlinesAS2239 + AS436 / AS215$377.502026-10-29T00:39:14Z
2026-12-13 → 2026-12-18American Airlines / Delta Air LinesAA2379 + AA2089 / DL384$377.502026-10-29T00:39:14Z
2026-12-13 → 2026-12-18Delta Air LinesDL474 / DL1019 + DL734$392.502026-10-29T00:39:14Z

2026-12-13 → 2026-12-18 · $395.00

  • Alaska Airlines AS214: SEA 2026-12-13 21:21:00 → BOS 2026-12-14 05:40:00; nonstop; 319 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.

2026-12-13 → 2026-12-18 · $415.00

  • Delta Air Lines DL438: SEA 2026-12-13 11:45:00 → BOS 2026-12-13 19:59:00; nonstop; 314 minutes. Local airport times.
  • Delta Air Lines DL384: BOS 2026-12-18 07:50:00 → SEA 2026-12-18 11:21:00; nonstop; 391 minutes. Local airport times.

2026-12-13 → 2026-12-18 · $377.50

  • American Airlines AA2203 / AA1874: SEA 2026-12-13 12:34:00 → BOS 2026-12-13 23:13:00; 1 stop(s) via PHL; 459 minutes. Local airport times.
    • AA2203: SEA 2026-12-13 12:34:00 → PHL 2026-12-13 20:35:00; layover at PHL: 75 minutes.
    • AA1874: PHL 2026-12-13 21:50:00 → BOS 2026-12-13 23:13:00.
  • Delta Air Lines DL384: BOS 2026-12-18 07:50:00 → SEA 2026-12-18 11:21:00; nonstop; 391 minutes. Local airport times.

2026-12-13 → 2026-12-18 · $395.00

  • Alaska Airlines AS460: SEA 2026-12-13 15:40:00 → BOS 2026-12-13 23:59:00; nonstop; 319 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.

2026-12-13 → 2026-12-18 · $415.00

  • Delta Air Lines DL474: SEA 2026-12-13 15:45:00 → BOS 2026-12-14 00:02:00; nonstop; 317 minutes. Local airport times.
  • Delta Air Lines DL384: BOS 2026-12-18 07:50:00 → SEA 2026-12-18 11:21:00; nonstop; 391 minutes. Local airport times.

2026-12-13 → 2026-12-18 · $377.50

  • Alaska Airlines AS2 / AA1152: SEA 2026-12-13 14:02:00 → BOS 2026-12-14 00:21:00; 1 stop(s) via DCA; 439 minutes. Local airport times.
    • AS2: SEA 2026-12-13 14:02:00 → DCA 2026-12-13 21:59:00; layover at DCA: 60 minutes.
    • AA1152: DCA 2026-12-13 22:59:00 → BOS 2026-12-14 00:21:00.
  • Alaska Airlines AS215: BOS 2026-12-18 09:00:00 → SEA 2026-12-18 12:37:00; nonstop; 397 minutes. Local airport times.

2026-12-13 → 2026-12-18 · $377.50

  • Alaska Airlines AS314 / AA4801: SEA 2026-12-13 09:16:00 → BOS 2026-12-13 19:55:00; 1 stop(s) via STL; 459 minutes. Local airport times.
    • AS314: SEA 2026-12-13 09:16:00 → STL 2026-12-13 15:06:00; layover at STL: 69 minutes.
    • AA4801: STL 2026-12-13 16:15:00 → BOS 2026-12-13 19:55:00.
  • Alaska Airlines AS215: BOS 2026-12-18 09:00:00 → SEA 2026-12-18 12:37:00; nonstop; 397 minutes. Local airport times.

2026-12-13 → 2026-12-18 · $377.50

  • Alaska Airlines AS2239 / AS436: SEA 2026-12-13 19:54:00 → BOS 2026-12-14 06:20:00; 1 stop(s) via PDX; 446 minutes. Local airport times.
    • AS2239: SEA 2026-12-13 19:54:00 → PDX 2026-12-13 20:50:00; layover at PDX: 69 minutes.
    • AS436: PDX 2026-12-13 21:59:00 → BOS 2026-12-14 06:20:00.
  • Alaska Airlines AS215: BOS 2026-12-18 09:00:00 → SEA 2026-12-18 12:37:00; nonstop; 397 minutes. Local airport times.

2026-12-13 → 2026-12-18 · $377.50

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

2026-12-13 → 2026-12-18 · $392.50

  • Delta Air Lines DL474: SEA 2026-12-13 15:45:00 → BOS 2026-12-13 23:54:00; nonstop; 309 minutes. Local airport times.
  • Delta Air Lines DL1019 / DL734: BOS 2026-12-18 05:30:00 → SEA 2026-12-18 11:09:00; 1 stop(s) via DTW; 519 minutes. Local airport times.
    • DL1019: BOS 2026-12-18 05:30:00 → DTW 2026-12-18 07:52:00; layover at DTW: 63 minutes.
    • DL734: DTW 2026-12-18 08:55:00 → SEA 2026-12-18 11:09:00.

More dates for this route