Flights from Seattle Tacoma to Boston

Our cheapest offers for flights from Seattle Tacoma to Boston

Here you can compare cheap flights from Seattle Tacoma (SEA) to Boston (BOS) 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 Boston. Prices and availability may change at any time.

Outbound Return Airlines Shop Baggage Price
Seattle-Tacoma
Boston
Outbound
04/12/25
2 Stopovers (DEN, MIA)
F93406, F91280, F91436
14h 20min
Return
04/27/25
1 Stopover (DEN)
UA2630, F93405
30h 32min
Frontier Airlines ?
$282
Best option
Seattle-Tacoma
Boston
Outbound
04/12/25
direct
AS0536
05h 22min
Return
04/27/25
direct
AS0459
06h 13min
Alaska Airlines ?
$288
Seattle-Tacoma
Boston
Pay attention to transfer at connecting flight
Outbound
04/12/25
2 Stopovers (LAS, BWI)
NK0743, NK0911, NK0614
27h 26min
Return
04/27/25
3 Stopovers (ATL, IAH, LAS)
NK0217, NK0691, NK0987, NK0250
41h 30min
Spirit Airlines
$308
Seattle-Tacoma
Boston
Outbound
04/12/25
direct
B60498
05h 25min
Return
04/27/25
direct
DL0384
06h 20min
JetBlue Airways ?
$298
Seattle-Tacoma
Boston
Outbound
04/12/25
direct
B60498
05h 25min
Return
04/27/25
direct
HA4823
06h 13min
JetBlue Airways ?
$302
Seattle-Tacoma
Boston
Outbound
04/12/25
direct
HA6628
05h 22min
Return
04/27/25
direct
HA4823
06h 13min
Hawaiian Airlines
$311
Seattle-Tacoma
Boston
Outbound
04/12/25
direct
AS0536
05h 22min
Return
04/27/25
1 Stopover (MSP)
SY1606, SY0285
11h 27min
Alaska Airlines
$344
Seattle-Tacoma
Boston
Outbound
04/12/25
1 Stopover (SFO)
UA0608, UA2697
11h 51min
Return
04/27/25
1 Stopover (SFO)
UA2441, UA1777
12h 58min
United Airlines ?
$356
Seattle-Tacoma
Boston
Outbound
04/26/25
direct
B60498
05h 28min
Return
05/23/25
1 Stopover (JFK)
B60217, B60263
08h 59min
JetBlue Airways ?
$389
Seattle-Tacoma
Boston
Outbound
04/26/25
direct
B60498
05h 28min
Return
05/23/25
1 Stopover (JFK)
B60217, B60263
08h 59min
JetBlue Airways ?
$415
Prices based on recent searches, subject to last-minute changes
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Tips and tricks to help you find cheap flights from Seattle Tacoma to Boston

Favorite airline: e.g. Spirit Airlines, Sun Country Airlines
75 % of flights booked on the route from Seattle-Tacoma to Boston are booked with Spirit Airlines, Sun Country Airlines and Delta.
Spirit Airlines
28 %
Sun Country Airlines
28 %
Delta
19 %
Stopover flights are the cheapest connection
Direct flights on this route are $25.00 more expensive on average than flights with a stopover.
non stop flight
1 stop
2 stops
05h 20min
08h 11min
21h 34min
$266
$331
$241
Favourite connection: via Minneapolis
On this route, flights with a stopover in Minneapolis are the most popular.
Route
bookings
1 stopover Minneapolis - St. Paul International Airport, MN
13h 48min, from $335
41 %
1 stopover Las Vegas - McCarran International Airport, NV
11h 28min, from $364
26 %
Direct flights
05h 20min, from $266
22 %

Important flight information

Flight information: Seattle-Tacoma - Boston

Roundtrip from $281.26
Flight duration min. 05:08 / max. 08:15
Return flight duration min. 06:33/ max. 10:40
Distance 4010 km
Flights per week 47
Departure airport Airport Seattle-Tacoma International Airport, WA (SEA)
Arrival airport Airport Boston Logan International Airport, MA (BOS)
Destination country Flights to United States
Alternative routes to United States
Alternative flights to Boston
Flight destinations with a similar price
Flight destinations with a similar price