Cheap Flights from Boston, MA to Seattle, WA from $149
On Cheapflightsplus.com you will find 9 direct and 632 connecting flights from Boston to Seattle. You can compare airfare deals from 13 airlines and multiple travel sites from $149, book and save on cheap plane tickets and last minute offers. Also check out BOS-SEA flight schedule to find best flight time, convenient departure and arrival airports.
Find One-Way and Round-Trip Boston to Seattle Flight Deals
Best Flights from Boston to Seattle Today
Price | Departure | Arrival | Flight Duration | Airline | Flight |
---|---|---|---|---|---|
from $149 | 07:00 Boston Logan | 10:30 Seattle Seattle-Tacoma Intl | 6h 30m | JetBlue | B6497 |
from $150 | 19:19 Boston Logan | 22:39 Seattle Seattle-Tacoma Intl | 6h 20m | Alaska Airlines | AS537 |
from $150 | 07:00 Boston Logan | 10:21 Seattle Seattle-Tacoma Intl | 6h 21m | Alaska Airlines | AS459 |
from $167 | 07:00 Boston Logan | 10:45 Seattle Seattle-Tacoma Intl | 6h 45m | Delta Air Lines Inc. | DL384 |
from $184 | 17:25 Boston Logan | 20:44 Seattle Seattle-Tacoma Intl | 6h 19m | Alaska Airlines | AS364 |
from $340 | 07:00 Boston Logan | 10:37 Seattle Seattle-Tacoma Intl | 6h 37m | Alaska Airlines | AS401 |
from $400 | 07:00 Boston Logan | 10:21 Seattle Seattle-Tacoma Intl | 6h 21m | American Airlines | AA9302 |
from $416 | 17:23 Boston Logan | 21:00 Seattle Seattle-Tacoma Intl | 6h 37m | Alaska Airlines | AS362 |
from $152 | 06:00 Boston Logan | 12:53 Seattle Seattle-Tacoma Intl | 9h 53m layover 0h 50m - San Francisco | United Airlines | UA2441 UA2315 |
from $152 | 08:00 Boston Logan | 15:18 Seattle Seattle-Tacoma Intl | 10h 18m layover 1h 10m - San Francisco | United Airlines | UA1008 UA2650 |
from $152 | 13:30 Boston Logan | 21:07 Seattle Seattle-Tacoma Intl | 10h 37m layover 1h 31m - San Francisco | United Airlines | UA1187 UA2019 |
from $160 | 19:30 Boston Logan | 07:15+1 день Seattle Seattle-Tacoma Intl | 14h 45m layover 6h 41m - Denver | JetBlue | B6393 F91175 |
from $163 | 11:37 Boston Logan | 17:08 Seattle Seattle-Tacoma Intl | 8h 31m layover 1h 23m - Minneapolis | Sun Country Airlines | SY252 SY285 |
from $162 | 08:10 Boston Logan | 20:30 Seattle Seattle-Tacoma Intl | 15h 20m layover 2h 36m - Chicago 2h 42m - Las Vegas | Spirit Airlines | NK174 NK188 NK413 |
from $162 | 17:59 Boston Logan | 07:15+1 день Seattle Seattle-Tacoma Intl | 16h 16m layover 1h 9m - Philadelphia 6h 2m - Denver | American Airlines | AA1408 AA3174 F91175 |
from $162 | 17:35 Boston Logan | 07:15+1 день Seattle Seattle-Tacoma Intl | 16h 40m layover 2h 0m - New York 5h 14m - Denver | JetBlue | B6517 B697 F91175 |
Flight Schedule Boston (Massachusetts) to Seattle (Washington)
Departure | Arrival | Flight Details | Flight Duration | Price |
---|---|---|---|---|
07:00 — 10:30
|
07:00 — 10:30
B6497
JetBlue
Boston — Seattle
|
6h 30m |
Find flight
from$149 |
|
07:00 — 10:21
|
07:00 — 10:21
AS459
Alaska Airlines
Boston — Seattle
|
6h 21m |
Find flight
from$150 |
|
07:00 — 10:45
|
07:00 — 10:45
DL384
Delta Air Lines Inc.
Boston — Seattle
|
6h 45m |
Find flight
from$167 |
|
07:00 — 10:37
|
07:00 — 10:37
AS401
Alaska Airlines
Boston — Seattle
|
6h 37m |
Find flight
from$340 |
|
07:00 — 10:21
|
07:00 — 10:21
AA9302
American Airlines
Boston — Seattle
|
6h 21m |
Find flight
from$400 |
|
17:23 — 21:00
|
17:23 — 21:00
AS362
Alaska Airlines
Boston — Seattle
|
6h 37m |
Find flight
from$416 |
|
17:25 — 20:44
|
17:25 — 20:44
AS364
Alaska Airlines
Boston — Seattle
|
6h 19m |
Find flight
from$184 |
|
18:40 — 22:25
|
18:40 — 22:25
DL324
Delta Air Lines Inc.
Boston — Seattle
|
6h 45m |
Find flight
from$167 |
|
19:19 — 22:39
|
19:19 — 22:39
AS537
Alaska Airlines
Boston — Seattle
|
6h 20m |
Find flight
from$150 |
|
05:55 — 15:21
|
05:55 — 09:40
UA2441
United Airlines
Boston — San Francisco
3h 23m stop
13:03 — 15:21
UA2391
United Airlines
San Francisco — Seattle
|
12h 26m including layover |
Find flight
from$192 |
|
06:00 — 12:53
|
06:00 — 09:45
UA2441
United Airlines
Boston — San Francisco
50m stop
10:35 — 12:53
UA2315
United Airlines
San Francisco — Seattle
|
9h 53m including layover |
Find flight
from$152 |
|
06:00 — 15:18
|
06:00 — 09:45
UA2441
United Airlines
Boston — San Francisco
3h 15m stop
13:00 — 15:18
UA2650
United Airlines
San Francisco — Seattle
|
12h 18m including layover |
Find flight
from$152 |
|
08:00 — 15:18
|
08:00 — 11:50
UA1008
United Airlines
Boston — San Francisco
1h 10m stop
13:00 — 15:18
UA2650
United Airlines
San Francisco — Seattle
|
10h 18m including layover |
Find flight
from$152 |
|
09:30 — 16:16
|
09:30 — 11:28
UA216
United Airlines
Boston — Chicago
2h 2m stop
13:30 — 16:16
UA1485
United Airlines
Chicago — Seattle
|
9h 46m including layover |
Find flight
from$212 |
|
11:37 — 17:08
|
11:30 — 13:44
SY252
Sun Country Airlines
Boston — Minneapolis
1h 23m stop
15:34 — 17:28
SY285
Sun Country Airlines
Minneapolis — Seattle
|
8h 31m including layover |
Find flight
from$163 |
|
12:00 — 17:51
|
08:45 — 10:50
AS6761
Alaska Airlines
Boston — Chicago
1h 1m stop
13:07 — 15:55
AS335
Alaska Airlines
Chicago — Seattle
|
8h 51m including layover |
Find flight
from$187 |
|
13:30 — 21:07
|
13:30 — 17:19
UA1187
United Airlines
Boston — San Francisco
1h 31m stop
18:50 — 21:07
UA2019
United Airlines
San Francisco — Seattle
|
10h 37m including layover |
Find flight
from$152 |
|
14:00 — 22:00
|
13:53 — 15:30
UA2454
United Airlines
Boston — Newark
3h 15m stop
19:10 — 22:37
UA2044
United Airlines
Newark — Seattle
|
11h including layover |
Find flight
from$212 |
|
14:52 — 21:46
|
14:26 — 16:28
AS6392
Alaska Airlines
Boston — Chicago
2h 3m stop
19:14 — 22:00
AS421
Alaska Airlines
Chicago — Seattle
|
9h 54m including layover |
Find flight
from$186 |
|
15:57 — 22:02
|
15:57 — 17:30
UA1977
United Airlines
Boston — Newark
1h 5m stop
18:35 — 22:02
UA330
United Airlines
Newark — Seattle
|
9h 5m including layover |
Find flight
from$193 |
|
16:13 — 23:44
|
16:13 — 19:55
AS389
Alaska Airlines
Boston — San Diego
41m stop
20:36 — 23:44
AS1199
Alaska Airlines
San Diego — Seattle
|
10h 31m including layover |
Find flight
from$164 |
|
16:55 — 23:09
|
16:48 — 19:37
UA800
United Airlines
Boston — Denver
1h 24m stop
21:05 — 23:11
UA2651
United Airlines
Denver — Seattle
|
9h 14m including layover |
Find flight
from$211 |
|
18:30 — 08:20
+1 day
|
18:30 — 22:08
AS357
Alaska Airlines
Boston — San Francisco
7h 52m stop
06:00 — 08:20
AS1043
Alaska Airlines
San Francisco — Seattle
|
16h 50m including layover |
Find flight
from$172 |
|
19:30 — 07:15
+1 day
|
19:30 — 22:23
B6393
JetBlue
Boston — Denver
6h 41m stop
05:04 — 07:15
F91175
Frontier Airlines
Denver — Seattle
|
14h 45m including layover |
Find flight
from$160 |
|
05:45 — 15:21
|
05:45 — 07:29
UA1734
United Airlines
Boston — Washington D.C.
56m stop
08:25 — 11:16
UA1116
United Airlines
Washington D.C. — San Francisco
1h 47m stop
13:03 — 15:21
UA2391
United Airlines
San Francisco — Seattle
|
12h 36m including layover |
Find flight
from$198 |
|
08:10 — 20:30
|
08:10 — 10:21
NK174
Spirit Airlines
Boston — Chicago
2h 36m stop
12:57 — 15:02
NK188
Spirit Airlines
Chicago — Las Vegas
2h 42m stop
17:44 — 20:30
NK413
Spirit Airlines
Las Vegas — Seattle
|
15h 20m including layover |
Find flight
from$162 |
|
09:25 — 00:15
+1 day
|
09:25 — 13:03
NK1370
Spirit Airlines
Boston — Tampa
3h 44m stop
16:47 — 19:01
NK184
Spirit Airlines
Tampa — Las Vegas
2h 27m stop
21:28 — 00:15
NK181
Spirit Airlines
Las Vegas — Seattle
|
17h 50m including layover |
Find flight
from$206 |
|
10:05 — 00:11
+1 day
|
10:05 — 13:14
NK2062
Spirit Airlines
Boston — New Orleans
4h 30m stop
17:44 — 20:03
NK388
Spirit Airlines
New Orleans — Los Angeles
1h 10m stop
21:13 — 00:11
NK1490
Spirit Airlines
Los Angeles — Seattle
|
17h 6m including layover |
Find flight
from$190 |
|
10:45 — 00:50
+1 day
|
10:45 — 12:41
UA1631
United Airlines
Boston — Chicago
3h 29m stop
16:10 — 18:50
UA2409
United Airlines
Chicago — San Francisco
3h 45m stop
22:35 — 00:50
UA1971
United Airlines
San Francisco — Seattle
|
17h 5m including layover |
Find flight
from$198 |
|
11:26 — 00:15
+1 day
|
11:26 — 15:03
NK2975
Spirit Airlines
Boston — Miami
53m stop
15:56 — 18:32
NK201
Spirit Airlines
Miami — Las Vegas
2h 56m stop
21:28 — 00:15
NK181
Spirit Airlines
Las Vegas — Seattle
|
15h 49m including layover |
Find flight
from$206 |
|
12:17 — 07:15
+1 day
|
12:17 — 13:53
F93011
Frontier Airlines
Boston — Philadelphia
5h 46m stop
19:39 — 22:02
F93339
Frontier Airlines
Philadelphia — Denver
7h 2m stop
05:04 — 07:15
F91175
Frontier Airlines
Denver — Seattle
|
21h 58m including layover |
Find flight
from$165 |
|
13:00 — 07:15
+1 day
|
13:00 — 15:36
AA1445
American Airlines
Boston — Charlotte
1h 56m stop
17:32 — 19:10
AA1636
American Airlines
Charlotte — Denver
9h 54m stop
05:04 — 07:15
F91175
Frontier Airlines
Denver — Seattle
|
21h 15m including layover |
Find flight
from$162 |
|
15:06 — 07:15
+1 day
|
15:06 — 16:29
B61117
JetBlue
Boston — New York
4h 30m stop
20:59 — 23:50
B697
JetBlue
New York — Denver
5h 14m stop
05:04 — 07:15
F91175
Frontier Airlines
Denver — Seattle
|
19h 9m including layover |
Find flight
from$169 |
|
17:35 — 07:15
+1 day
|
17:35 — 18:59
B6517
JetBlue
Boston — New York
2h stop
20:59 — 23:50
B697
JetBlue
New York — Denver
5h 14m stop
05:04 — 07:15
F91175
Frontier Airlines
Denver — Seattle
|
16h 40m including layover |
Find flight
from$162 |
|
17:59 — 07:15
+1 day
|
17:59 — 19:31
AA1408
American Airlines
Boston — Philadelphia
1h 9m stop
20:40 — 23:02
AA3174
American Airlines
Philadelphia — Denver
6h 2m stop
05:04 — 07:15
F91175
Frontier Airlines
Denver — Seattle
|
16h 16m including layover |
Find flight
from$162 |
|
21:44 — 20:26
+1 day
|
21:44 — 23:23
NK2072
Spirit Airlines
Boston — Baltimore
10h 23m stop
08:00 — 10:28
NK2377
Spirit Airlines
Baltimore — Las Vegas
5h 21m stop
17:36 — 20:26
NK1455
Spirit Airlines
Las Vegas — Seattle
|
25h 42m including layover |
Find flight
from$202 |
Flight Information
Below we will explain in detail what the flights cost on the destination from Boston to Seattle depends on and how to choose the most interesting flight option for you.
Distance between Boston and Seattle is 4005 miles. Time difference between the cities is 3h. Airplanes depart 05:00 to 21:57 from 4 Boston airports and arrive 05:00 to 21:57 to 3 Seattle airports. Average flight time is 6h 30m.
- The fastest flight 6h 19m
- Average flight time 6h 30m
- The earliest flight 05:00
- The latest flight 21:57
- Distance 2489 ml
The cheapest months to travel to Seattle are november (from 149 $), december (from 162 $), february (from 194 $).
The most expensive months are january (from 202 $), february (from 194 $), december (from 162 $).
What is the lowest airfare Boston to Seattle?
The cheapest plane ticket found by our users is $149. This airfare is for economy class on one-way B6497 flight by JetBlue for November 12, 2024 which leaves Logan in Boston at 07:00 am and arrives at Seattle Seattle-Tacoma Intl at 10:30.
Popular Airlines on the Route
The flight Boston — Seattle is served by 13 regular airlines and 6 low-cost airlines. Most of the flights on this route are operated by Delta Air Lines Inc. - 85 departures per week at the price of from $ 167 . And the most expensive tickets are offered by SWISS International Air Lines airline - from $ 7139.
Direct flights
There are 9 nonstop flights on the route. The fastest direct flight is AS364 by Alaska Airlines takes 6h 19m and the cheapest is B6497 by JetBlue for $149.
- from $149Find
- from $167Find
- AA - American Airlinesfrom $400Find
- AS - Alaska Airlinesfrom $150Find
Connecting Flights
There are 632 flights with layovers on the route. The fastest connecting flight is DL1103 by Delta Air Lines Inc. takes 8h 8m and the cheapest is B6497 by JetBlue for $152.
- from $244Find
- from $160Find
- AA - American Airlinesfrom $162Find
- SY - Sun Country Airlinesfrom $163Find
- UA - United Airlinesfrom $152Find
- LX - SWISS International Air Linesfrom $6971Find
- AS - Alaska Airlinesfrom $164Find
- F9 - Frontier Airlinesfrom $165Find
- PD - Porter Airlinesfrom $501Find
- TK - Turkish Airlinesfrom $2123Find
- HA - Hawaiian Airlinesfrom $565Find
- NK - Spirit Airlinesfrom $162Find
Airports
You can fly from Boston to Seattle from 4 airports (Boston City Heliport, Boston RT128 Rail, Boston South Rail, Logan).
Boston airports
- Boston City Heliport-JBCFind
- Boston RT128 Rail-ZRUFind
- Boston South Rail-ZTOFind
- Logan-BOSfrom $149Find
Seattle airports
- Boeing Field International Airport-BFIFind
- Seattle-Tacoma Intl-SEAFind
- Kenmore Air Harbor SPB-LKEFind
Airplanes
There are flights to Seattle from Boston by 13 airlines that use 10 aircraft brands. They range from huge modern airplanes to small-sized.
- Airbus A318/319/320/321from $149Find
- Airbus A320from $162Find
- Boeing 737-100/200from $197Find
- Embraer 175 (short wing)from $217Find
- Embraer Lineage 1000from $219Find
- Boeing 737-800from $228Find
- Airbus A321from $228Find
- Embraer 170from $254Find
- Boeing 757-200from $270Find
- Boeing 737 MAX 8from $292Find
Top Domestic Destinations from Boston
You may also consider searching for discounted plane tickets to some other popular places from Boston within United States.
- from $57Find
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- from $63Find
- from $63Find
- from $60Find
Top International Destinations from Boston
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.
- from $76Find
- from $76Find
- from $54Find
- from $54Find
- from $69Find
- from $77Find
- from $78Find
- from $66Find
- from $77Find
- from $67Find
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.