Flights from Boston to Seattle Tacoma

Our cheapest offers for flights from Boston to Seattle Tacoma

Here you can compare cheap flights from Boston (BOS) to Seattle Tacoma (SEA) for one-way or return trips. The following offers were searched for and found on idealo during the last few days. Or start your own flight search to Seattle Tacoma. Prices and availability may change at any time.

Outbound Return Airlines Shop Baggage Price
Best option
Boston
Seattle-Tacoma
Outbound
03/02/25
direct
AS0459
06h 40min
Return
03/07/25
direct
AS0536
05h 14min
Alaska Airlines ?
$330
Boston
Seattle-Tacoma
Outbound
03/02/25
direct
DL0324
06h 40min
Return
03/07/25
direct
DL0473
05h 29min
Delta Air Lines ?
$331
Boston
Seattle-Tacoma
Outbound
03/02/25
direct
AS0459
06h 40min
Return
03/07/25
direct
AS0536
05h 14min
Alaska Airlines
$339
Boston
Seattle-Tacoma
Outbound
03/02/25
direct
AS0459
06h 40min
Return
03/07/25
direct
AS0536
05h 14min
Alaska Airlines ?
$340
Boston
Seattle-Tacoma
Outbound
03/02/25
direct
AS0459
06h 40min
Return
03/07/25
direct
AS0536
05h 14min
Alaska Airlines ?
$350
Boston
Seattle-Tacoma
Outbound
03/02/25
direct
AS0459
06h 40min
Return
03/07/25
direct
AS0460
05h 14min
Alaska Airlines
$384
Boston
Seattle-Tacoma
Outbound
03/02/25
1 Stopover (PHX)
AA1850, AA3388
10h 49min
Return
03/07/25
1 Stopover (PHL)
AA2760, AA1467
07h 01min
American Airlines ?
$485
Boston
Seattle-Tacoma
Outbound
03/02/25
1 Stopover (EWR)
UA1833, UA1330
08h 34min
Return
03/07/25
1 Stopover (DEN)
UA0757, UA2610
07h 19min
United Airlines ?
$499
Boston
Seattle-Tacoma
Outbound
03/02/25
2 Stopovers (BWI, LAX)
NK2072, NK1912, NK0804
20h 10min
Return
03/07/25
2 Stopovers (LAS, BWI)
NK0782, NK1932, NK0934
18h 32min
Spirit Airlines
$868
Boston
Seattle-Tacoma
Outbound
03/02/25
2 Stopovers (BWI, LAX)
NK2072, NK1912, NK0804
20h 10min
Return
03/07/25
2 Stopovers (LAS, BWI)
NK0782, NK1932, NK0934
18h 32min
Spirit Airlines
$879
Prices based on recent searches, subject to last-minute changes
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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 %
Stopover flights are the cheapest connection
Direct flights on this route are $164.00 more expensive on average than flights with a stopover.
non stop flight
1 stop
2 stops
06h 23min
17h 53min
24h 10min
$ 488
$ 352
$ 324
The favorite connection is non-stop
52 % of travelers decide to book a direct flight on this route.
Route
bookings
Direct flights
06h 23min, from $ 488
52 %
1 stopover Minneapolis - St. Paul International Airport, MN
14h 37min, from $ 517
19 %
2 stopovers Hartsfield-Jackson Atlanta International Airport, GA Las Vegas - McCarran International Airport, NV
24h 10min, from $ 324
14 %

Important flight information

Flight information: Boston - Seattle-Tacoma

Roundtrip from $ 329,98
Flight duration min. 06:33 / max. 10:40
Return flight duration min. 05:08/ max. 08:15
Distance 4010 km
Flights per week 57
Departure airport Airport Boston Logan International Airport, MA (BOS)
Arrival airport Airport Seattle-Tacoma International Airport, WA (SEA)
Destination country Flights to United States
Alternative routes to United States
Alternative flights to Seattle-Tacoma
Flight destinations with a similar price
Flight destinations with a similar price