Cheap Flights from Seattle, WA to Boston, MA from $131
On Cheapflightsplus.com you will find 9 direct and 392 connecting flights from Seattle to Boston. You can compare airfare deals from 6 airlines and multiple travel sites from $131, book and save on cheap plane tickets and last minute offers. Also check out SEA-BOS flight schedule to find best flight time, convenient departure and arrival airports.
Find One-Way and Round-Trip Seattle to Boston Flight Deals
Best Flights from Seattle to Boston Today
Price | Departure | Arrival | Flight Duration | Airline | Flight |
---|---|---|---|---|---|
from $159 | 10:26 Seattle Seattle-Tacoma Intl | 18:59 Boston Logan | 5h 33m | Alaska Airlines | AS506 |
from $203 | 15:43 Seattle Seattle-Tacoma Intl | 23:59 Boston Logan | 5h 16m | Hawaiian Airlines | HA6627 |
from $208 | 23:40 Seattle Seattle-Tacoma Intl | 08:00+1 день Boston Logan | 5h 20m | Alaska Airlines | AS536 |
from $247 | 10:58 Seattle Seattle-Tacoma Intl | 19:19 Boston Logan | 5h 21m | Hawaiian Airlines | HA6629 |
from $252 | 10:58 Seattle Seattle-Tacoma Intl | 19:19 Boston Logan | 5h 21m | Alaska Airlines | AS818 |
from $302 | 08:21 Seattle Seattle-Tacoma Intl | 16:45 Boston Logan | 5h 24m | Hawaiian Airlines | HA6626 |
from $307 | 08:21 Seattle Seattle-Tacoma Intl | 16:45 Boston Logan | 5h 24m | Alaska Airlines | AS306 |
from $131 | 18:55 Seattle Seattle-Tacoma Intl | 07:30+1 день Boston Logan | 9h 35m layover 0h 58m - San Diego | Hawaiian Airlines | HA6880 HA6497 |
from $132 | 18:59 Seattle Seattle-Tacoma Intl | 07:40+1 день Boston Logan | 9h 41m layover 1h 0m - San Diego | Hawaiian Airlines | HA6608 HA6342 |
from $140 | 18:55 Seattle Seattle-Tacoma Intl | 07:30+1 день Boston Logan | 9h 35m layover 0h 58m - San Diego | Alaska Airlines | AS939 AS259 |
from $141 | 18:59 Seattle Seattle-Tacoma Intl | 07:40+1 день Boston Logan | 9h 41m layover 1h 0m - San Diego | Alaska Airlines | AS206 AS366 |
from $153 | 17:59 Seattle Seattle-Tacoma Intl | 07:40+1 день Boston Logan | 10h 41m layover 2h 0m - San Diego | Hawaiian Airlines | HA6882 HA6342 |
from $163 | 17:59 Seattle Seattle-Tacoma Intl | 07:40+1 день Boston Logan | 10h 41m layover 2h 0m - San Diego | Alaska Airlines | AS1098 AS366 |
from $168 | 15:58 Seattle Seattle-Tacoma Intl | 08:39+1 день Boston Logan | 13h 41m layover 4h 29m - Las Vegas 1h 15m - Detroit | Spirit Airlines | NK2328 NK2144 NK2149 |
from $168 | 06:00 Seattle Seattle-Tacoma Intl | 08:41+1 день Boston Logan | 23h 41m layover 13h 58m - Las Vegas 1h 22m - Detroit | Spirit Airlines | NK2626 NK2144 NK2149 |
from $184 | 12:30 Seattle Seattle-Tacoma Intl | 09:12+1 день Boston Logan | 17h 42m layover 2h 6m - Denver 7h 47m - Fletcher | Sun Country Airlines | SY1698 G4226 G4228 |
Flight Schedule Seattle (Washington) to Boston (Massachusetts)
Departure | Arrival | Flight Details | Flight Duration | Price |
---|---|---|---|---|
08:21 — 16:45
|
08:21 — 16:45
HA6626
Hawaiian Airlines
Seattle — Boston
|
5h 24m |
Find flight
from$302 |
|
08:21 — 16:45
|
08:21 — 16:45
AS306
Alaska Airlines
Seattle — Boston
|
5h 24m |
Find flight
from$307 |
|
10:26 — 18:59
|
10:26 — 18:59
AS506
Alaska Airlines
Seattle — Boston
|
5h 33m |
Find flight
from$159 |
|
10:58 — 19:19
|
10:58 — 19:19
HA6629
Hawaiian Airlines
Seattle — Boston
|
5h 21m |
Find flight
from$247 |
|
10:58 — 19:19
|
10:58 — 19:19
AS818
Alaska Airlines
Seattle — Boston
|
5h 21m |
Find flight
from$252 |
|
15:43 — 23:59
|
15:43 — 23:59
HA6627
Hawaiian Airlines
Seattle — Boston
|
5h 16m |
Find flight
from$203 |
|
15:43 — 23:59
|
15:43 — 23:59
AS460
Alaska Airlines
Seattle — Boston
|
5h 16m |
Find flight
from$210 |
|
23:40 — 08:00
+1 day
|
23:40 — 08:00
HA6628
Hawaiian Airlines
Seattle — Boston
|
5h 20m |
Find flight
from$203 |
|
23:40 — 08:00
+1 day
|
23:40 — 08:00
AS536
Alaska Airlines
Seattle — Boston
|
5h 20m |
Find flight
from$208 |
|
00:20 — 12:50
|
00:20 — 06:28
UA1832
United Airlines
Seattle — Chicago
2h 47m stop
09:15 — 12:50
UA721
United Airlines
Chicago — Boston
|
9h 30m including layover |
Find flight
from$183 |
|
05:10 — 19:53
|
05:10 — 07:22
UA2166
United Airlines
Seattle — San Francisco
3h 40m stop
11:02 — 19:53
UA1116
United Airlines
San Francisco — Boston
|
11h 43m including layover |
Find flight
from$181 |
|
07:00 — 17:46
|
07:00 — 13:15
UA2618
United Airlines
Seattle — Chicago
1h stop
14:15 — 17:46
UA1693
United Airlines
Chicago — Boston
|
7h 46m including layover |
Find flight
from$181 |
|
07:00 — 18:03
|
07:00 — 13:14
UA1617
United Airlines
Seattle — Chicago
1h 11m stop
14:25 — 18:03
UA580
United Airlines
Chicago — Boston
|
8h 3m including layover |
Find flight
from$181 |
|
08:00 — 19:20
|
08:00 — 16:11
UA2398
United Airlines
Seattle — Washington D.C.
1h 22m stop
17:33 — 19:20
UA688
United Airlines
Washington D.C. — Boston
|
8h 20m including layover |
Find flight
from$181 |
|
08:57 — 19:53
|
08:57 — 12:43
UA1359
United Airlines
Seattle — Denver
1h 7m stop
13:50 — 19:53
UA1292
United Airlines
Denver — Boston
|
7h 56m including layover |
Find flight
from$181 |
|
09:45 — 21:44
|
09:45 — 12:01
UA1470
United Airlines
Seattle — San Francisco
59m stop
13:15 — 21:59
UA1372
United Airlines
San Francisco — Boston
|
8h 59m including layover |
Find flight
from$181 |
|
10:55 — 21:35
|
10:55 — 17:10
UA2671
United Airlines
Seattle — Chicago
54m stop
18:04 — 21:35
UA1989
United Airlines
Chicago — Boston
|
7h 40m including layover |
Find flight
from$181 |
|
11:13 — 22:00
|
11:13 — 14:59
UA1061
United Airlines
Seattle — Denver
1h 3m stop
16:02 — 22:00
UA1027
United Airlines
Denver — Boston
|
7h 47m including layover |
Find flight
from$181 |
|
11:13 — 23:53
|
11:13 — 14:59
UA1061
United Airlines
Seattle — Denver
2h 51m stop
17:50 — 23:53
UA1218
United Airlines
Denver — Boston
|
9h 40m including layover |
Find flight
from$181 |
|
12:43 — 23:46
|
12:43 — 16:30
UA1417
United Airlines
Seattle — Denver
1h 13m stop
17:43 — 23:46
UA1691
United Airlines
Denver — Boston
|
8h 3m including layover |
Find flight
from$183 |
|
13:00 — 23:59
|
12:47 — 20:45
UA2275
United Airlines
Seattle — Washington D.C.
1h 21m stop
22:22 — 23:59
UA755
United Airlines
Washington D.C. — Boston
|
7h 59m including layover |
Find flight
from$183 |
|
13:55 — 00:52
+1 day
|
13:55 — 20:10
UA1298
United Airlines
Seattle — Chicago
1h 12m stop
21:22 — 00:52
UA1779
United Airlines
Chicago — Boston
|
7h 57m including layover |
Find flight
from$181 |
|
17:59 — 07:40
+1 day
|
17:59 — 20:45
HA6882
Hawaiian Airlines
Seattle — San Diego
2h stop
22:45 — 07:40
HA6342
Hawaiian Airlines
San Diego — Boston
|
10h 41m including layover |
Find flight
from$153 |
|
17:59 — 07:40
+1 day
|
17:59 — 20:45
AS1098
Alaska Airlines
Seattle — San Diego
2h stop
22:45 — 07:40
AS366
Alaska Airlines
San Diego — Boston
|
10h 41m including layover |
Find flight
from$163 |
|
18:55 — 07:30
+1 day
|
18:55 — 21:47
HA6880
Hawaiian Airlines
Seattle — San Diego
58m stop
22:45 — 07:30
HA6497
Hawaiian Airlines
San Diego — Boston
|
9h 35m including layover |
Find flight
from$131 |
|
18:59 — 07:40
+1 day
|
18:59 — 21:45
HA6608
Hawaiian Airlines
Seattle — San Diego
1h stop
22:45 — 07:40
HA6342
Hawaiian Airlines
San Diego — Boston
|
9h 41m including layover |
Find flight
from$132 |
|
19:02 — 06:01
+1 day
|
19:00 — 22:51
UA757
United Airlines
Seattle — Denver
1h 6m stop
23:59 — 06:01
UA297
United Airlines
Denver — Boston
|
7h 59m including layover |
Find flight
from$182 |
|
19:34 — 08:18
+1 day
|
19:34 — 21:50
UA737
United Airlines
Seattle — San Francisco
1h 40m stop
23:30 — 08:18
UA1665
United Airlines
San Francisco — Boston
|
9h 44m including layover |
Find flight
from$182 |
|
22:15 — 10:21
+1 day
|
22:15 — 06:12
UA2402
United Airlines
Seattle — Washington D.C.
2h 28m stop
08:40 — 10:21
UA641
United Airlines
Washington D.C. — Boston
|
9h 6m including layover |
Find flight
from$183 |
|
22:50 — 09:09
+1 day
|
22:50 — 07:06
UA341
United Airlines
Seattle — Newark
49m stop
07:55 — 09:09
UA1127
United Airlines
Newark — Boston
|
7h 19m including layover |
Find flight
from$181 |
|
23:37 — 10:23
+1 day
|
23:37 — 07:48
UA299
United Airlines
Seattle — Newark
1h 17m stop
09:05 — 10:23
UA375
United Airlines
Newark — Boston
|
7h 46m including layover |
Find flight
from$181 |
|
23:45 — 09:56
+1 day
|
23:45 — 05:48
UA299
United Airlines
Seattle — Chicago
42m stop
06:30 — 09:56
UA2104
United Airlines
Chicago — Boston
|
7h 11m including layover |
Find flight
from$182 |
|
06:00 — 08:41
+1 day
|
06:00 — 08:31
NK2626
Spirit Airlines
Seattle — Las Vegas
13h 58m stop
22:29 — 05:23
NK2144
Spirit Airlines
Las Vegas — Detroit
1h 22m stop
06:45 — 08:41
NK2149
Spirit Airlines
Detroit — Boston
|
23h 41m including layover |
Find flight
from$168 |
|
06:00 — 09:09
+1 day
|
06:00 — 08:31
NK2626
Spirit Airlines
Seattle — Las Vegas
13h 23m stop
21:54 — 05:25
NK2297
Spirit Airlines
Las Vegas — Orlando
42m stop
06:07 — 09:09
NK2090
Spirit Airlines
Orlando — Boston
|
24h 9m including layover |
Find flight
from$168 |
|
12:30 — 09:12
+1 day
|
12:30 — 16:15
SY1698
Sun Country Airlines
Seattle — Denver
2h 6m stop
18:21 — 23:13
G4226
Allegiant Air
Denver — Fletcher
7h 47m stop
07:00 — 09:12
G4228
Allegiant Air
Fletcher — Boston
|
17h 42m including layover |
Find flight
from$184 |
|
15:20 — 14:44
+1 day
|
15:20 — 17:51
NK2328
Spirit Airlines
Seattle — Las Vegas
3h 33m stop
21:24 — 05:14
NK954
Spirit Airlines
Las Vegas — Miami
6h 15m stop
11:29 — 14:44
NK2126
Spirit Airlines
Miami — Boston
|
20h 24m including layover |
Find flight
from$168 |
|
15:58 — 08:39
+1 day
|
15:20 — 17:51
NK2328
Spirit Airlines
Seattle — Las Vegas
4h 29m stop
22:29 — 05:23
NK2144
Spirit Airlines
Las Vegas — Detroit
1h 15m stop
06:45 — 08:41
NK2149
Spirit Airlines
Detroit — Boston
|
13h 41m including layover |
Find flight
from$168 |
Flight Information
Below we will explain in detail what the flights cost on the destination from Seattle to Boston depends on and how to choose the most interesting flight option for you.
Distance between Seattle and Boston is 4005 miles. Time difference between the cities is 3h. Airplanes depart 00:17 to 23:59 from 3 Seattle airports and arrive 00:17 to 23:59 to 4 Boston airports. Average flight time is 5h 21m.
- The fastest flight 5h 16m
- Average flight time 5h 21m
- The earliest flight 00:17
- The latest flight 23:59
- Distance 2489 ml
The cheapest months to travel to Boston are may (from 125 $), july (from 125 $), june (from 126 $).
The most expensive months are december (from 309 $), september (from 181 $), october (from 181 $).
What is the lowest airfare Seattle to Boston?
The cheapest plane ticket found by our users is $131. This airfare is for economy class on one-way HA6880 flight by Hawaiian Airlines for August 15, 2025 which leaves Seattle-Tacoma Intl in Seattle at 18:55 am and arrives at Boston Logan at 07:30.
Popular Airlines on the Route
The flight Seattle — Boston is served by 6 regular airlines and 2 low-cost airlines. Most of the flights on this route are operated by Alaska Airlines - 61 departures per week at the price of from $ 140 . And the most expensive tickets are offered by Alaska Airlines airline - from $ 5586.
Direct flights
There are 9 nonstop flights on the route. The fastest direct flight is HA6627 by Hawaiian Airlines takes 5h 16m and the cheapest is HA6880 by Hawaiian Airlines for $159.
- AS - Alaska Airlinesfrom $159Find
- HA - Hawaiian Airlinesfrom $203Find
Connecting Flights
There are 392 flights with layovers on the route. The fastest connecting flight is HA6833 by Hawaiian Airlines takes 7h and the cheapest is HA6880 by Hawaiian Airlines for $131.
- AS - Alaska Airlinesfrom $140Find
- SY - Sun Country Airlinesfrom $184Find
- TK - Turkish Airlinesfrom $2801Find
- HA - Hawaiian Airlinesfrom $131Find
- UA - United Airlinesfrom $181Find
- NK - Spirit Airlinesfrom $168Find
Airports
You can fly from Seattle to Boston from 3 airports (Boeing Field International Airport, Seattle-Tacoma Intl, Kenmore Air Harbor SPB).
Seattle airports
- Boeing Field International Airport-BFIFind
- Seattle-Tacoma Intl-SEAfrom $131Find
- Kenmore Air Harbor SPB-LKEFind
Boston airports
- Boston City Heliport-JBCFind
- Boston RT128 Rail-ZRUFind
- Boston South Rail-ZTOFind
- Logan-BOSFind
Airplanes
There are flights to Boston from Seattle by 6 airlines that use 0 aircraft brands. They range from huge modern airplanes to small-sized.
Top Domestic Destinations from Seattle
You may also consider searching for discounted plane tickets to some other popular places from Seattle within United States.
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Top International Destinations from Seattle
Our state-of-the art metasearch will definitely provide you with the best airfare on international flights. We’re proud to partner with many reliable travel suppliers located outside the US what gives us an opportunity to offer the most competitive prices on far destinations.
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How to book a plane ticket yourself?

- Fill in the search parameters — cities of departure and destination, departure and return dates and click «Find flights»
- Select the best flight that you like. Please, check the airports of departure and arrival. Select the best fare, but pay attention to the following flight details - airports of departure and arrival, flight duration and layovers. Please use filters and sort to find the best flight.
- Click «Buy» when you are ready — our system will redirect you to the site that sells the selected flight ticket.
- Fill in all passenger and payment information — passport and contact information, please double check all passengers’ names and make a payment for your itinerary.
- That's it — you will receive an email with your e-ticket usually within 10 minutes after your flight is confirmed. Please, print the e-ticket and have it with you at the airport. You would need to have only a passport and/or a required form of ID to travel. Please, check your Visa requirements if you travel outside of the United States or Canada.
To find a plane ticket, please select dates.