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
Best option
Seattle-Tacoma
Boston
Outbound
09/04/25
direct
B60398
05h 27min
Return
09/28/25
direct
B60397
06h 19min
JetBlue Airways ?
$230
found 3 days ago
Seattle-Tacoma
Boston
Pay attention to transfer at connecting flight
Outbound
09/19/25
3 Stopovers (MSP, DTW, FLL)
SY0286, NK2383, NK3721, NK0616
27h 14min
Return
09/29/25
2 Stopovers (BNA, LAS)
NK3921, NK2333, NK0781
31h 19min
Sun Country Airlines, Spirit Airlines
$348
Seattle-Tacoma
Boston
Outbound
09/04/25
1 Stopover (SAN)
HA6882, HA4849
09h 40min
Return
09/28/25
direct
HA4823
06h 13min
Hawaiian Airlines ?
$246
found 3 days ago
Seattle-Tacoma
Boston
Outbound
09/04/25
1 Stopover (SAN)
AS1098, AS0259
09h 40min
Return
09/28/25
direct
AS0459
06h 13min
Alaska Airlines ?
$261
found 3 days ago
Seattle-Tacoma
Boston
Outbound
09/04/25
1 Stopover (SAN)
AS1098, AS0259
09h 40min
Return
09/28/25
direct
AS0459
06h 13min
Alaska Airlines
$263
found 3 days ago
Seattle-Tacoma
Boston
Outbound
09/19/25
direct
B60398
05h 27min
Return
09/29/25
direct
B60397
06h 19min
JetBlue Airways ?
$284
Seattle-Tacoma
Boston
Outbound
09/04/25
direct
HA6627
05h 24min
Return
09/28/25
direct
HA4823
06h 13min
Hawaiian Airlines
$288
found 3 days ago
Seattle-Tacoma
Boston
Outbound
09/04/25
1 Stopover (ORD)
UA0747, UA2169
09h 54min
Return
09/28/25
1 Stopover (SFO)
UA2441, UA0433
11h 19min
United Airlines ?
$324
found 3 days ago
Seattle-Tacoma
Boston
Outbound
07/25/25
direct
B60198
05h 22min
Return
08/17/25
direct
B60197
06h 30min
JetBlue Airways ?
$326
Seattle-Tacoma
Boston
Outbound
09/19/25
1 Stopover (ORD)
AA3029, AA1457
08h 41min
Return
09/29/25
direct
AS0393
06h 18min
American Airlines ?
$328
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 $229.10
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