Cheap Flights from Seattle, WA to Boston, MA from $131

Return flight: Boston – Seattle

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

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: $131 (one-way), $225 (round-trip).
Direct flights
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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
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from$302
08:21 — 16:45
08:21 — 16:45 AS306 Alaska Airlines
Seattle — Boston
5h 24m
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from$307
10:26 — 18:59
10:26 — 18:59 AS506 Alaska Airlines
Seattle — Boston
5h 33m
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from$159
10:58 — 19:19
10:58 — 19:19 HA6629 Hawaiian Airlines
Seattle — Boston
5h 21m
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from$247
10:58 — 19:19
10:58 — 19:19 AS818 Alaska Airlines
Seattle — Boston
5h 21m
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from$252
15:43 — 23:59
15:43 — 23:59 HA6627 Hawaiian Airlines
Seattle — Boston
5h 16m
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from$203
15:43 — 23:59
15:43 — 23:59 AS460 Alaska Airlines
Seattle — Boston
5h 16m
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from$210
23:40 — 08:00
+1 day
23:40 — 08:00 HA6628 Hawaiian Airlines
Seattle — Boston
5h 20m
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from$203
23:40 — 08:00
+1 day
23:40 — 08:00 AS536 Alaska Airlines
Seattle — Boston
5h 20m
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
*Departure and arrival times - local. Updated on August 2, 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 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.

Economy class
$131
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Business class
?
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First class
?
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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 Airlines
    from $159
    Find
  • HA - Hawaiian Airlines
    from $203
    Find
See more direct flights

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 Airlines
    from $140
    Find
  • SY - Sun Country Airlines
    from $184
    Find
  • TK - Turkish Airlines
    from $2801
    Find
  • HA - Hawaiian Airlines
    from $131
    Find
  • UA - United Airlines
    from $181
    Find
  • NK - Spirit Airlines
    from $168
    Find
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-BFI
    Find
  • Seattle-Tacoma Intl-SEA
    from $131
    Find
  • Kenmore Air Harbor SPB-LKE
    Find

Boston airports

  • Boston City Heliport-JBC
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  • Boston RT128 Rail-ZRU
    Find
  • Boston South Rail-ZTO
    Find
  • Logan-BOS
    Find

How to book a plane ticket yourself?

How to book an air 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.

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