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
Boston
Seattle-Tacoma
Outbound
04/12/25
1 Stopover (MSP)
SY0252, AS0387
24h 26min
Return
04/27/25
1 Stopover (ATL)
AS1480, F93512
22h 03min
Sun Country Airlines, Alaska Airlines ?
$353
found yesterday
Best option
Boston
Seattle-Tacoma
Outbound
04/21/25
direct
AS0459
06h 28min
Return
05/19/25
direct
AS0536
05h 23min
Alaska Airlines ?
$405
Boston
Seattle-Tacoma
Pay attention to transfer at connecting flight
Outbound
04/21/25
3 Stopovers (MCO, ATL, LAX)
NK1338, NK0457, NK0448, NK0630
25h 44min
Return
05/19/25
3 Stopovers (MSP, DTW, ATL)
SY0286, NK2383, NK1104, NK1180
24h 39min
Spirit Airlines
$402
Boston
Seattle-Tacoma
Outbound
06/10/25
direct
B60397
06h 18min
Return
06/29/25
1 Stopover (MSP)
SY0290, SY0251
07h 38min
JetBlue Airways ?
$365
Boston
Seattle-Tacoma
Outbound
06/20/25
1 Stopover (MSP)
SY0252, SY0289
14h 16min
Return
07/19/25
1 Stopover (MSP)
SY0290, SY0251
07h 38min
Sun Country Airlines
$384
Boston
Seattle-Tacoma
Outbound
06/20/25
1 Stopover (MSP)
SY0252, SY0289
14h 16min
Return
07/19/25
1 Stopover (MSP)
SY0290, SY0253
20h 44min
Sun Country Airlines ?
$389
Boston
Seattle-Tacoma
Outbound
04/21/25
1 Stopover (MSP)
SY0252, SY0285
08h 48min
Return
05/19/25
direct
AS0536
05h 23min
Sun Country Airlines
$402
Boston
Seattle-Tacoma
Outbound
04/21/25
2 Stopovers (ATL, LAX)
NK0217, NK0448, NK0630
24h 51min
Return
05/19/25
3 Stopovers (LAS, LAX, ATL)
NK0782, NK0465, NK3341, NK1180
26h 14min
Spirit Airlines ?
$404
Boston
Seattle-Tacoma
Outbound
04/12/25
2 Stopovers (ATL, LAX)
NK1259, NK0206, NK0630
31h 42min
Return
04/27/25
2 Stopovers (LAS, DTW)
NK0743, NK0817, NK0180
21h 17min
Spirit Airlines
$409
found yesterday
Boston
Seattle-Tacoma
Outbound
04/21/25
1 Stopover (MSP)
SY0252, SY0285
08h 48min
Return
05/19/25
direct
AS0536
05h 23min
Sun Country Airlines
$418
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 $ 352,64
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