| Outbound | Return | Airlines | Shop | Baggage | Price | ||
|---|---|---|---|---|---|---|---|
| Best option Boston Seattle-Tacoma | Outbound 09/19/25 direct AS0819 06h 13min | Return 09/29/25 direct AS0536 05h 26min |  Alaska Airlines |  | ? | $279 | |
| Boston Seattle-Tacoma | Outbound 08/19/25 2 Stopovers (DTW, LAS) NK2328, NK1726, NK0781 28h 58min | Return 09/02/25 2 Stopovers (LAS, ATL) NK0782, NK0331, NK1180 26h 14min |  Spirit Airlines |  | $323 | ||
| Boston Seattle-Tacoma | Outbound 09/19/25 direct AS0819 06h 13min | Return 09/29/25 direct AS0536 05h 26min | Alaska Airlines |  | ? | $289 | |
| Boston Seattle-Tacoma | Outbound 09/19/25 direct AS0819 06h 13min | Return 09/29/25 direct AS0536 05h 26min | Alaska Airlines |  | $293 | ||
| Boston Seattle-Tacoma | Outbound 09/19/25 direct AS0393 06h 18min | Return 09/29/25 direct AS0536 05h 26min | Alaska Airlines |  | ? | $294 | |
| Boston Seattle-Tacoma | Outbound 08/19/25 direct DL0324 06h 35min | Return 09/02/25 direct DL0473 05h 31min |  Delta Air Lines | | ? | $299 | |
| Boston Seattle-Tacoma | Outbound 09/19/25 1 Stopover (SAN) AS0260, AS1097 12h 05min | Return 09/29/25 direct AS0536 05h 26min | Alaska Airlines |  | ? | $301 | |
| Boston Seattle-Tacoma | Outbound 09/19/25 direct HA4792 06h 18min | Return 09/29/25 direct HA6628 05h 26min |  Hawaiian Airlines |  | $302 | ||
| Boston Seattle-Tacoma | Outbound 08/14/25 direct DL0332 06h 26min | Return 09/11/25 1 Stopover (SAN) AS1098, AS0259 09h 36min | Delta Air Lines | | ? | $306 | |
| Boston Seattle-Tacoma | Outbound 06/18/25 direct B60197 06h 30min | Return 07/15/25 1 Stopover (JFK) B60264, B60418 09h 26min |  JetBlue Airways |  | ? | $307 |
Tips and tricks to help you find cheap flights from Boston to Seattle Tacoma
Favorite airline: e.g. Alaska Airlines, Spirit Airlines
Flight tickets on the route Boston – Seattle-Tacoma are most frequently booked with Alaska Airlines.
Alaska Airlines
22 %
Spirit Airlines
22 %
Delta
19 %