Alaska Airlines flights from Boston Logan (BOS) to Seattle-Tacoma (SEA).
| FLIGHT SCHEDULE |
|---|
| Direct Flights: |
| Daily
15:25
Boston Logan (BOS) B
18:45
Seattle-Tacoma (SEA) Alaska Airlines AS 105 Non-stop Boeing 737 (73J) 6:20 Effective 2026-06-10 through 2026-08-18 |
| Mon,Tue,Fri,Sat
09:08
Boston Logan (BOS) B
12:27
Seattle-Tacoma (SEA) Alaska Airlines AS 215 Non-stop Boeing 737-800 (73H) 6:19 Valid until 2026-01-03 |
| Thu,Sun
09:08
Boston Logan (BOS) B
12:27
Seattle-Tacoma (SEA) Alaska Airlines AS 215 Non-stop Boeing 737 MAX 9 (7M9) 6:19 Valid until 2026-01-04 |
| Mon
09:08
Boston Logan (BOS) B
12:27
Seattle-Tacoma (SEA) Alaska Airlines AS 215 Non-stop Boeing 737 MAX 8 (7M8) 6:19 Operates only on 2026-01-05 |
| Tue
09:08
Boston Logan (BOS) B
12:27
Seattle-Tacoma (SEA) Alaska Airlines AS 215 Non-stop Boeing 737-800 (73H) 6:19 Operates only on 2026-01-06 |
| Tue-Sun
18:24
Boston Logan (BOS) B
22:00
Seattle-Tacoma (SEA) Alaska Airlines AS 299 Non-stop Boeing 737 MAX 9 (7M9) 6:36 Effective 2026-02-12 through 2026-03-10 |
| Mon
18:24
Boston Logan (BOS) B
22:00
Seattle-Tacoma (SEA) Alaska Airlines AS 299 Non-stop Boeing 737 MAX 8 (7M8) 6:36 Effective 2026-02-16 through 2026-03-09 |
| Mon,Wed
18:24
Boston Logan (BOS) B
22:00
Seattle-Tacoma (SEA) Alaska Airlines AS 299 Non-stop Boeing 737 (73J) 6:36 Effective 2026-03-11 through 2026-03-16 |
| Tue,Thu-Sun
18:24
Boston Logan (BOS) B
22:00
Seattle-Tacoma (SEA) Alaska Airlines AS 299 Non-stop Boeing 737 MAX 9 (7M9) 6:36 Effective 2026-03-12 through 2026-03-17 |
| Daily
16:25
Boston Logan (BOS) B
19:51
Seattle-Tacoma (SEA) Alaska Airlines AS 304 Non-stop Boeing 737 (73J) 6:26 Effective from 2026-06-10 |
| Wed
17:55
Boston Logan (BOS) B
21:18
Seattle-Tacoma (SEA) Alaska Airlines AS 306 Non-stop Boeing 737 (73J) 6:23 Operates only on 2026-03-18 |
| Daily
17:55
Boston Logan (BOS) B
21:19
Seattle-Tacoma (SEA) Alaska Airlines AS 306 Non-stop Boeing 737 (73J) 6:24 Effective 2026-03-19 through 2026-05-12 |
| Daily
18:32
Boston Logan (BOS) B
21:58
Seattle-Tacoma (SEA) Alaska Airlines AS 306 Non-stop Boeing 737 (73J) 6:26 Effective from 2026-06-10 |
| Daily
18:52
Boston Logan (BOS) B
22:00
Seattle-Tacoma (SEA) Alaska Airlines AS 306 Non-stop Boeing 737 (73J) 6:08 Effective 2026-05-13 through 2026-06-09 |
| Mon,Sun
18:06
Boston Logan (BOS) B
21:30
Seattle-Tacoma (SEA) Alaska Airlines AS 307 Non-stop Boeing 737-800 (73H) 6:24 Valid until 2026-01-04 |
| Thu-Sat
18:06
Boston Logan (BOS) B
21:30
Seattle-Tacoma (SEA) Alaska Airlines AS 307 Non-stop Boeing 737 MAX 9 (7M9) 6:24 Valid until 2026-01-03 |
| Mon
18:06
Boston Logan (BOS) B
21:30
Seattle-Tacoma (SEA) Alaska Airlines AS 307 Non-stop Boeing 737 MAX 8 (7M8) 6:24 Operates only on 2026-01-05 |
| Tue
18:06
Boston Logan (BOS) B
21:30
Seattle-Tacoma (SEA) Alaska Airlines AS 307 Non-stop Boeing 737-800 (73H) 6:24 Operates only on 2026-01-06 |
| Daily
18:44
Boston Logan (BOS) B
22:17
Seattle-Tacoma (SEA) Alaska Airlines AS 309 Non-stop Boeing 737 MAX 9 (7M9) 6:33 Effective 2026-01-07 through 2026-01-23 |
| Sat
18:44
Boston Logan (BOS) B
22:17
Seattle-Tacoma (SEA) Alaska Airlines AS 309 Non-stop Boeing 737 (73J) 6:33 Operates only on 2026-01-24 |
| Daily
18:44
Boston Logan (BOS) B
22:17
Seattle-Tacoma (SEA) Alaska Airlines AS 309 Non-stop Boeing 737 MAX 9 (7M9) 6:33 Effective 2026-01-25 through 2026-02-10 |
| Wed
18:44
Boston Logan (BOS) B
22:17
Seattle-Tacoma (SEA) Alaska Airlines AS 309 Non-stop Boeing 737 MAX 8 (7M8) 6:33 Operates only on 2026-02-11 |
| Daily
16:30
Boston Logan (BOS) B
19:41
Seattle-Tacoma (SEA) Alaska Airlines AS 364 Non-stop Boeing 737 (73J) 6:11 Effective 2026-05-13 through 2026-06-09 |
| Mon-Fri,Sun
07:00
Boston Logan (BOS) B
10:34
Seattle-Tacoma (SEA) Alaska Airlines AS 459 Non-stop Boeing 737 MAX 9 (7M9) 6:34 Effective 2026-01-07 through 2026-01-14 |
| Thu-Sat
07:00
Boston Logan (BOS) B
10:34
Seattle-Tacoma (SEA) Alaska Airlines AS 459 Non-stop Boeing 737 (73J) 6:34 Effective 2026-01-10 through 2026-01-16 |
| Mon-Wed,Fri-Sun
07:00
Boston Logan (BOS) B
10:34
Seattle-Tacoma (SEA) Alaska Airlines AS 459 Non-stop Boeing 737 MAX 9 (7M9) 6:34 Effective 2026-01-17 through 2026-01-28 |
| Thu
07:00
Boston Logan (BOS) B
10:34
Seattle-Tacoma (SEA) Alaska Airlines AS 459 Non-stop Boeing 737 (73J) 6:34 Effective 2026-01-22 through 2026-02-05 |
| Fri
07:00
Boston Logan (BOS) B
10:34
Seattle-Tacoma (SEA) Alaska Airlines AS 459 Non-stop Boeing 737-800 (73H) 6:34 Operates only on 2026-01-30 |
| Mon-Wed,Sat,Sun
07:00
Boston Logan (BOS) B
10:34
Seattle-Tacoma (SEA) Alaska Airlines AS 459 Non-stop Boeing 737 MAX 9 (7M9) 6:34 Effective 2026-01-31 through 2026-02-11 |
| Fri
07:00
Boston Logan (BOS) B
10:34
Seattle-Tacoma (SEA) Alaska Airlines AS 459 Non-stop Boeing 737 (73J) 6:34 Operates only on 2026-02-06 |
| Tue-Sun
07:00
Boston Logan (BOS) B
10:33
Seattle-Tacoma (SEA) Alaska Airlines AS 459 Non-stop Boeing 737 MAX 9 (7M9) 6:33 Effective 2026-02-12 through 2026-02-19 |
| Mon
07:00
Boston Logan (BOS) B
10:33
Seattle-Tacoma (SEA) Alaska Airlines AS 459 Non-stop Boeing 737-800 (73H) 6:33 Effective 2026-02-16 through 2026-02-23 |
| Thu,Fri
07:00
Boston Logan (BOS) B
10:33
Seattle-Tacoma (SEA) Alaska Airlines AS 459 Non-stop Boeing 737 (73J) 6:33 Effective 2026-02-20 through 2026-02-27 |
| Tue,Wed,Sat,Sun
07:00
Boston Logan (BOS) B
10:33
Seattle-Tacoma (SEA) Alaska Airlines AS 459 Non-stop Boeing 737 MAX 9 (7M9) 6:33 Effective 2026-02-21 through 2026-03-04 |
| Mon,Thu-Sun
07:00
Boston Logan (BOS) B
10:33
Seattle-Tacoma (SEA) Alaska Airlines AS 459 Non-stop Boeing 737 (73J) 6:33 Effective 2026-03-02 through 2026-03-08 |
| Mon-Wed,Sat
07:00
Boston Logan (BOS) B
10:33
Seattle-Tacoma (SEA) Alaska Airlines AS 459 Non-stop Boeing 737 MAX 9 (7M9) 6:33 Effective 2026-03-09 through 2026-03-14 |
| Mon,Thu,Fri,Sun
07:00
Boston Logan (BOS) B
10:33
Seattle-Tacoma (SEA) Alaska Airlines AS 459 Non-stop Boeing 737 (73J) 6:33 Effective 2026-03-12 through 2026-03-16 |
| Tue
07:00
Boston Logan (BOS) B
10:33
Seattle-Tacoma (SEA) Alaska Airlines AS 459 Non-stop Boeing 737 MAX 9 (7M9) 6:33 Operates only on 2026-03-17 |
| Wed
07:00
Boston Logan (BOS) B
10:23
Seattle-Tacoma (SEA) Alaska Airlines AS 459 Non-stop Boeing 737 (73J) 6:23 Operates only on 2026-03-18 |
| Daily
07:00
Boston Logan (BOS) B
10:28
Seattle-Tacoma (SEA) Alaska Airlines AS 459 Non-stop Boeing 737 (73J) 6:28 Effective 2026-03-19 through 2026-05-12 |
| Daily
07:20
Boston Logan (BOS) B
10:42
Seattle-Tacoma (SEA) Alaska Airlines AS 459 Non-stop Boeing 737 (73J) 6:22 Effective from 2026-06-10 |
| Mon-Sat
07:30
Boston Logan (BOS) B
10:52
Seattle-Tacoma (SEA) Alaska Airlines AS 459 Non-stop Boeing 737 MAX 9 (7M9) 6:22 Valid until 2026-01-05 |
| Sun
07:30
Boston Logan (BOS) B
10:52
Seattle-Tacoma (SEA) Alaska Airlines AS 459 Non-stop Boeing 737 (73J) 6:22 Operates only on 2026-01-04 |
| Tue
07:30
Boston Logan (BOS) B
10:52
Seattle-Tacoma (SEA) Alaska Airlines AS 459 Non-stop Boeing 737-800 (73H) 6:22 Operates only on 2026-01-06 |
| Daily
07:30
Boston Logan (BOS) B
10:40
Seattle-Tacoma (SEA) Alaska Airlines AS 459 Non-stop Boeing 737 (73J) 6:10 Effective 2026-05-13 through 2026-06-09 |
| Daily
09:00
Boston Logan (BOS) B
12:09
Seattle-Tacoma (SEA) Alaska Airlines AS 537 Non-stop Boeing 737 (73J) 6:09 Effective 2026-05-13 through 2026-06-09 |
| Daily
09:02
Boston Logan (BOS) B
12:35
Seattle-Tacoma (SEA) Alaska Airlines AS 537 Non-stop Boeing 737 MAX 9 (7M9) 6:33 Effective 2026-02-13 through 2026-02-26 |
| Fri
09:02
Boston Logan (BOS) B
12:35
Seattle-Tacoma (SEA) Alaska Airlines AS 537 Non-stop Boeing 737 (73J) 6:33 Operates only on 2026-02-27 |
| Daily
09:02
Boston Logan (BOS) B
12:35
Seattle-Tacoma (SEA) Alaska Airlines AS 537 Non-stop Boeing 737 MAX 9 (7M9) 6:33 Effective 2026-02-28 through 2026-03-12 |
| Mon,Fri,Sun
09:02
Boston Logan (BOS) B
12:35
Seattle-Tacoma (SEA) Alaska Airlines AS 537 Non-stop Boeing 737 (73J) 6:33 Effective 2026-03-13 through 2026-03-16 |
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- A domestic route departing from the Boston Logan airport (BOS) and arriving at Seattle-Tacoma airport (SEA).
- The flight distance is 2487 miles, or 4003 km.
- The timezone of the departure airport is UTC-5 , and the timezone of the arrival airport is UTC-8 . Current time at the point of departure is (loading...), and (loading...) at the point of arrival. There is a (loading...) hour time difference between the airports.
- For direct flights, the flight time varies between 6:08 and 6:36.
