Cheap Flights from Seattle, WA to Boston, MA from $125
Return flight: Boston – Seattle
On Cheapflightsplus.com you will find 8 direct and 201 connecting flights from Seattle to Boston. You can compare airfare deals from 5 airlines and multiple travel sites from $125, 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
To find the cheapest one way airline ticket select the date with the lowest price on the calendar below and click «Find Flights».
To search for round-trip flight deals click on the link «Check prices for return flights» and select the date of the return flight.
Cheapest flights in November: $125 (one-way), $214 (round-trip).
Direct flights
Check prices for return flight
Best Flights from Seattle to Boston Today
Take a look at the list of non stop flights and flights with layovers from Seattle to Boston with the lowest price of $125. The fastest direct flight takes 5h 16m and the fastest connecting – 7h.
| Price | Departure | Arrival | Flight Duration | Airline | Flight |
|---|---|---|---|---|---|
| from $125 | 23:40 Seattle Seattle-Tacoma Intl | 08:00+1 день Boston Logan | 5h 20m | Hawaiian Airlines | HA6628 |
| from $129 | 23:40 Seattle Seattle-Tacoma Intl | 08:00+1 день Boston Logan | 5h 20m | Alaska Airlines | AS536 |
| from $202 | 15:43 Seattle Seattle-Tacoma Intl | 23:59 Boston Logan | 5h 16m | Hawaiian Airlines | HA6627 |
| from $205 | 15:43 Seattle Seattle-Tacoma Intl | 23:59 Boston Logan | 5h 16m | Alaska Airlines | AS460 |
| from $246 | 10:58 Seattle Seattle-Tacoma Intl | 19:19 Boston Logan | 5h 21m | Hawaiian Airlines | HA6629 |
| from $251 | 10:58 Seattle Seattle-Tacoma Intl | 19:19 Boston Logan | 5h 21m | Alaska Airlines | AS818 |
| from $300 | 08:21 Seattle Seattle-Tacoma Intl | 16:45 Boston Logan | 5h 24m | Hawaiian Airlines | HA6626 |
| from $303 | 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 $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 $180 | 22:50 Seattle Seattle-Tacoma Intl | 09:09+1 день Boston Logan | 7h 19m layover 0h 49m - Newark | United Airlines | UA341 UA1127 |
| from $180 | 06:00 Seattle Seattle-Tacoma Intl | 16:28 Boston Logan | 7h 28m layover 0h 47m - Newark | United Airlines | UA2402 UA225 |
| from $180 | 10:55 Seattle Seattle-Tacoma Intl | 21:35 Boston Logan | 7h 40m layover 0h 54m - Chicago | United Airlines | UA2671 UA1989 |
| from $180 | 07:00 Seattle Seattle-Tacoma Intl | 17:46 Boston Logan | 7h 46m layover 1h 0m - Chicago | United Airlines | UA2618 UA1693 |
| from $193 | 16:58 Seattle Seattle-Tacoma Intl | 22:12+1 день Boston Logan | 26h 14m layover 15h 50m - Las Vegas 1h 6m - Atlanta | Spirit Airlines | NK782 NK1203 NK1180 |
| from $199 | 05:07 Seattle Seattle-Tacoma Intl | 17:46 Boston Logan | 9h 39m layover 0h 48m - Denver 1h 3m - Chicago | United Airlines | UA2269 UA2329 UA1693 |
Show all tickets
*Departure and arrival times - local. Prices indicated for one-way flights. Information updated on July 13, 2025
Flight Schedule Seattle (Washington) to Boston (Massachusetts)
Full flight schedule will help you in detecting at what time planes fly from Seattle to Boston. You can also specify the concrete flights and airlines on the route and how long the flight actually is. Use the calendar for today, tomorrow or other specific date as some flights are available only on certain days of the week.
| 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$300 |
|
|
08:21 — 16:45
|
08:21 — 16:45
AS306
Alaska Airlines
Seattle — Boston
|
5h 24m |
Find flight
from$303 |
|
|
10:58 — 19:19
|
10:58 — 19:19
HA6629
Hawaiian Airlines
Seattle — Boston
|
5h 21m |
Find flight
from$246 |
|
|
10:58 — 19:19
|
10:58 — 19:19
AS818
Alaska Airlines
Seattle — Boston
|
5h 21m |
Find flight
from$251 |
|
|
15:43 — 23:59
|
15:43 — 23:59
HA6627
Hawaiian Airlines
Seattle — Boston
|
5h 16m |
Find flight
from$202 |
|
|
15:43 — 23:59
|
15:43 — 23:59
AS460
Alaska Airlines
Seattle — Boston
|
5h 16m |
Find flight
from$205 |
|
|
23:40 — 08:00
+1 day
|
23:40 — 08:00
HA6628
Hawaiian Airlines
Seattle — Boston
|
5h 20m |
Find flight
from$125 |
|
|
23:40 — 08:00
+1 day
|
23:40 — 08:00
AS536
Alaska Airlines
Seattle — Boston
|
5h 20m |
Find flight
from$129 |
|
|
00:17 — 10:52
|
00:17 — 06:21
AS384
Alaska Airlines
Seattle — Chicago
53m stop
07:14 — 10:52
AS6661
Alaska Airlines
Chicago — Boston
|
7h 35m including layover |
Find flight
from$193 |
|
|
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$182 |
|
|
05:00 — 17:11
|
05:00 — 07:15
UA5657
United Airlines
Seattle — San Francisco
1h 8m stop
08:23 — 17:11
UA2647
United Airlines
San Francisco — Boston
|
9h 11m including layover |
Find flight
from$193 |
|
|
06:00 — 16:28
|
06:00 — 14:23
UA2402
United Airlines
Seattle — Newark
47m stop
15:10 — 16:28
UA225
United Airlines
Newark — Boston
|
7h 28m including layover |
Find flight
from$180 |
|
|
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$180 |
|
|
07:00 — 17:46
|
07:00 — 13:15
UA2618
United Airlines
Seattle — Chicago
1h stop
14:15 — 17:46
UA664
United Airlines
Chicago — Boston
|
7h 46m including layover |
Find flight
from$182 |
|
|
08:00 — 18:55
|
08:00 — 16:10
UA2217
United Airlines
Seattle — Washington D.C.
1h 6m stop
17:16 — 18:55
UA688
United Airlines
Washington D.C. — Boston
|
7h 55m including layover |
Find flight
from$182 |
|
|
08:45 — 20:01
|
08:45 — 12:28
UA1505
United Airlines
Seattle — Denver
1h 32m stop
14:00 — 20:01
UA597
United Airlines
Denver — Boston
|
8h 16m including layover |
Find flight
from$185 |
|
|
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$180 |
|
|
11:11 — 23:46
|
11:11 — 14:58
UA1049
United Airlines
Seattle — Denver
2h 45m stop
17:43 — 23:46
UA1691
United Airlines
Denver — Boston
|
9h 35m including layover |
Find flight
from$182 |
|
|
11:55 — 22:53
|
11:55 — 20:25
UA2467
United Airlines
Seattle — Newark
1h 5m stop
21:30 — 22:53
UA1386
United Airlines
Newark — Boston
|
7h 58m including layover |
Find flight
from$180 |
|
|
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$182 |
|
|
12:43 — 23:46
|
12:43 — 16:30
UA1969
United Airlines
Seattle — Denver
1h 13m stop
17:43 — 23:46
UA1488
United Airlines
Denver — Boston
|
8h 3m including layover |
Find flight
from$185 |
|
|
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$182 |
|
|
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$180 |
|
|
15:23 — 06:16
+1 day
|
15:23 — 17:39
UA325
United Airlines
Seattle — San Francisco
3h 51m stop
21:30 — 06:16
UA796
United Airlines
San Francisco — Boston
|
11h 53m including layover |
Find flight
from$193 |
|
|
17:35 — 06:16
+1 day
|
17:10 — 19:26
UA2482
United Airlines
Seattle — San Francisco
1h 43m stop
21:30 — 06:14
UA796
United Airlines
San Francisco — Boston
|
9h 41m including layover |
Find flight
from$181 |
|
|
17:35 — 08:16
+1 day
|
17:10 — 19:26
UA2482
United Airlines
Seattle — San Francisco
3h 43m stop
23:30 — 08:18
UA1665
United Airlines
San Francisco — Boston
|
11h 41m including layover |
Find flight
from$193 |
|
|
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 |
|
|
18:55 — 07:30
+1 day
|
18:55 — 21:47
AS939
Alaska Airlines
Seattle — San Diego
58m stop
22:45 — 07:30
AS259
Alaska Airlines
San Diego — Boston
|
9h 35m including layover |
Find flight
from$140 |
|
|
19:00 — 05:59
+1 day
|
19:00 — 22:51
UA1218
United Airlines
Seattle — Denver
1h 19m stop
23:59 — 06:01
UA2610
United Airlines
Denver — Boston
|
7h 59m including layover |
Find flight
from$181 |
|
|
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$181 |
|
|
21:40 — 06:10
+2 days
|
21:40 — 23:58
AS980
Alaska Airlines
Seattle — San Francisco
21h 30m stop
21:28 — 06:10
AS307
Alaska Airlines
San Francisco — Boston
|
29h 30m including layover |
Find flight
from$212 |
|
|
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$180 |
|
|
05:07 — 17:46
|
05:07 — 08:48
UA2269
United Airlines
Seattle — Denver
48m stop
09:36 — 13:12
UA2329
United Airlines
Denver — Chicago
1h 3m stop
14:15 — 17:46
UA1693
United Airlines
Chicago — Boston
|
9h 39m including layover |
Find flight
from$199 |
|
|
16:58 — 22:12
+1 day
|
16:58 — 19:36
NK782
Spirit Airlines
Seattle — Las Vegas
15h 50m stop
11:26 — 18:24
NK1203
Spirit Airlines
Las Vegas — Atlanta
1h 6m stop
19:30 — 22:12
NK1180
Spirit Airlines
Atlanta — Boston
|
26h 14m including layover |
Find flight
from$193 |
|
|
16:58 — 22:12
+1 day
|
16:58 — 19:36
NK782
Spirit Airlines
Seattle — Las Vegas
11h 49m stop
07:25 — 14:30
NK331
Spirit Airlines
Las Vegas — Atlanta
5h stop
19:30 — 22:12
NK1180
Spirit Airlines
Atlanta — Boston
|
26h 14m including layover |
Find flight
from$193 |
|
|
22:55 — 13:24
+1 day
|
22:55 — 06:58
UA684
United Airlines
Seattle — Washington D.C.
1h 42m stop
08:40 — 10:00
UA694
United Airlines
Washington D.C. — Newark
2h 10m stop
12:10 — 13:24
UA408
United Airlines
Newark — Boston
|
11h 29m including layover |
Find flight
from$201 |
|
*Departure and arrival times - local. Updated on July 13, 2025
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 124 $), july (from 125 $), june (from 125 $).
The most expensive months are december (from 308 $), september (from 180 $), october (from 180 $).
What is the lowest airfare Seattle to Boston?
The cheapest plane ticket found by our users is $125. This airfare is for economy class on one-way HA6628 flight by Hawaiian Airlines for July 14, 2025 which leaves Seattle-Tacoma Intl in Seattle at 23:40 am and arrives at Boston Logan at 08:00.
Economy class
$125
Business class
?
First class
?
Popular Airlines on the Route
The flight Seattle — Boston is served by 5 regular airlines and 2 low-cost airlines. Most of the flights on this route are operated by Alaska Airlines - 33 departures per week at the price of from $ 129 . And the most expensive tickets are offered by United Airlines airline - from $ 785.
Direct flights
There are 8 nonstop flights on the route. The fastest direct flight is HA6627 by Hawaiian Airlines takes 5h 16m and the cheapest is HA6628 by Hawaiian Airlines for $125.
- AS - Alaska Airlinesfrom $129Find
- HA - Hawaiian Airlinesfrom $125Find
See more direct flights
Connecting Flights
There are 201 flights with layovers on the route. The fastest connecting flight is HA6833 by Hawaiian Airlines takes 7h and the cheapest is HA6628 by Hawaiian Airlines for $131.
- AS - Alaska Airlinesfrom $140Find
- SY - Sun Country Airlinesfrom $198Find
- HA - Hawaiian Airlinesfrom $131Find
- UA - United Airlinesfrom $180Find
- NK - Spirit Airlinesfrom $193Find
See more connecting flights
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 $125Find
- 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 5 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.