Flight Routes from Boston to Seattle Tacoma

Trip type

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
06/25/26
direct
B60397
06h 23min
Return
06/30/26
1 Stopover (DFW)
AA2429, AA1595
11h 27min
JetBlue Airways ?
$446
Best option
Boston
Seattle-Tacoma
Outbound
06/25/26
direct
B60397
06h 23min
Return
06/30/26
direct
B60398
05h 28min
JetBlue Airways
$593
Boston
Seattle-Tacoma
Outbound
06/25/26
1 Stopover (MSP)
SY0252, SY0289
14h 06min
Return
06/30/26
1 Stopover (MSP)
SY0286, SY0251
13h 17min
Sun Country Airlines
$550
Boston
Seattle-Tacoma
Outbound
06/25/26
1 Stopover (MSP)
SY0254, SY0289
15h 11min
Return
06/30/26
1 Stopover (MSP)
SY0286, SY0251
13h 17min
Sun Country Airlines
$555
Boston
Seattle-Tacoma
Outbound
06/25/26
1 Stopover (MSP)
SY0254, SY0289
15h 11min
Return
06/30/26
1 Stopover (MSP)
SY0286, SY0251
13h 17min
Sun Country Airlines
$570
Boston
Seattle-Tacoma
Outbound
06/25/26
1 Stopover (DEN)
UA2433, F94545
16h 31min
Return
06/30/26
1 Stopover (MSP)
SY0286, SY0249
25h 59min
United Airlines, Frontier Airlines ?
$590
Boston
Seattle-Tacoma
Outbound
06/25/26
1 Stopover (SAN)
AS0389, AS1362
10h 11min
Return
06/30/26
direct
AS0536
05h 25min
Alaska Airlines ?
$640
Boston
Seattle-Tacoma
Outbound
06/25/26
1 Stopover (PHL)
AA3309, AA3259
08h 54min
Return
06/30/26
1 Stopover (ORD)
AA2881, AA2968
07h 31min
American Airlines ?
$682
Boston
Seattle-Tacoma
Outbound
06/25/26
direct
AS0304
06h 33min
Return
06/30/26
direct
AS0460
05h 26min
Alaska Airlines
$750
Boston
Seattle-Tacoma
Outbound
06/25/26
1 Stopover (PHL)
AA1776, AA3259
10h 52min
Return
06/30/26
1 Stopover (CLT)
AA0854, AA2595
10h 50min
American Airlines ?
$3,017
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 $ 445,80
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