Cheap Flights from Seattle, WA to Boston, MA from $87

Return flight: Boston – Seattle

On Cheapflightsplus.com you will find 9 direct and 576 connecting flights from Seattle to Boston. You can compare airfare deals from 9 airlines and multiple travel sites from $87, 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: $87 (one-way), $149 (round-trip).
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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
07:00 — 15:13
07:00 — 15:13 AS306 Alaska Airlines
Seattle — Boston
5h 13m
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from$108
07:30 — 16:02
07:30 — 16:02 DL459 Delta Air Lines Inc.
Seattle — Boston
5h 32m
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from$148
10:39 — 18:59
10:39 — 18:59 AA7487 American Airlines
Seattle — Boston
5h 20m
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from$209
11:40 — 20:05
11:40 — 20:05 B6498 JetBlue
Seattle — Boston
5h 25m
Find flight
from$87
15:49 — 23:59
15:49 — 23:59 AS460 Alaska Airlines
Seattle — Boston
5h 10m
Find flight
from$148
15:49 — 23:59
15:49 — 23:59 AA7432 American Airlines
Seattle — Boston
5h 10m
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from$209
21:40 — 05:47
+1 day
21:40 — 05:47 AS424 Alaska Airlines
Seattle — Boston
5h 7m
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from$143
23:29 — 07:55
+1 day
23:29 — 07:55 DL473 Delta Air Lines Inc.
Seattle — Boston
5h 26m
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from$148
23:30 — 07:44
+1 day
23:30 — 07:44 AS536 Alaska Airlines
Seattle — Boston
5h 14m
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from$224
00:25 — 11:23
00:25 — 06:29 AA2818 American Airlines
Seattle — Chicago
1h 41m stop
08:10 — 11:23 AA314 American Airlines
Chicago — Boston
7h 58m
including layover
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from$207
05:36 — 19:28
05:36 — 07:50 UA1954 United Airlines
Seattle — San Francisco
3h stop
10:50 — 19:28 UA2259 United Airlines
San Francisco — Boston
10h 52m
including layover
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from$196
06:16 — 20:23
06:16 — 10:15 AA4864 American Airlines
Seattle — Phoenix
3h 23m stop
13:38 — 20:23 AA2059 American Airlines
Phoenix — Boston
11h 7m
including layover
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from$149
07:35 — 18:54
07:35 — 08:29 AS2114 Alaska Airlines
Seattle — Portland
2h 4m stop
10:33 — 18:54 AS358 Alaska Airlines
Portland — Boston
8h 19m
including layover
Find flight
from$146
08:05 — 18:47
08:05 — 16:03 UA2855 United Airlines
Seattle — Washington D.C.
1h 7m stop
17:10 — 18:47 UA688 United Airlines
Washington D.C. — Boston
7h 42m
including layover
Find flight
from$187
08:35 — 18:54
08:35 — 09:28 AS2184 Alaska Airlines
Seattle — Portland
1h 5m stop
10:33 — 18:54 AS358 Alaska Airlines
Portland — Boston
7h 19m
including layover
Find flight
from$110
09:19 — 23:39
09:19 — 13:04 F93406 Frontier Airlines
Seattle — Denver
4h 43m stop
17:47 — 23:39 UA2292 United Airlines
Denver — Boston
11h 20m
including layover
Find flight
from$191
09:19 — 05:51
+1 day
09:19 — 13:04 F93406 Frontier Airlines
Seattle — Denver
10h 55m stop
23:59 — 05:51 UA2610 United Airlines
Denver — Boston
17h 32m
including layover
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from$191
11:40 — 23:52
11:40 — 15:45 AA5004 American Airlines
Seattle — Phoenix
1h 23m stop
17:08 — 23:52 AA567 American Airlines
Phoenix — Boston
9h 12m
including layover
Find flight
from$149
12:30 — 23:39
12:30 — 16:14 UA431 United Airlines
Seattle — Denver
1h 33m stop
17:47 — 23:39 UA2292 United Airlines
Denver — Boston
8h 9m
including layover
Find flight
from$202
12:47 — 23:59
12:47 — 20:45 UA2275 United Airlines
Seattle — Washington D.C.
1h 37m stop
22:22 — 23:59 UA755 United Airlines
Washington D.C. — Boston
8h 12m
including layover
Find flight
from$152
13:59 — 16:23
+1 day
13:59 — 16:16 AS1304 Alaska Airlines
Seattle — San Francisco
15h 29m stop
07:45 — 16:23 AS356 Alaska Airlines
San Francisco — Boston
23h 24m
including layover
Find flight
from$174
14:00 — 04:53
+1 day
14:00 — 16:17 UA375 United Airlines
Seattle — San Francisco
3h 58m stop
20:15 — 04:53 UA2488 United Airlines
San Francisco — Boston
11h 53m
including layover
Find flight
from$193
16:23 — 04:53
+1 day
16:23 — 18:40 UA737 United Airlines
Seattle — San Francisco
1h 35m stop
20:15 — 04:53 UA2488 United Airlines
San Francisco — Boston
9h 30m
including layover
Find flight
from$193
17:28 — 05:18
+1 day
17:28 — 19:55 NK204 Spirit Airlines
Seattle — Las Vegas
1h 20m stop
21:15 — 05:18 NK3924 Spirit Airlines
Las Vegas — Boston
8h 50m
including layover
Find flight
from$109
18:20 — 08:03
+1 day
18:20 — 20:37 UA436 United Airlines
Seattle — San Francisco
2h 48m stop
23:25 — 08:03 UA2495 United Airlines
San Francisco — Boston
10h 43m
including layover
Find flight
from$152
18:59 — 10:34
+1 day
18:39 — 23:59 SY286 Sun Country Airlines
Seattle — Minneapolis
6h 28m stop
06:54 — 10:41 SY251 Sun Country Airlines
Minneapolis — Boston
12h 35m
including layover
Find flight
from$163
20:49 — 16:23
+1 day
19:58 — 22:07 AS1014 Alaska Airlines
Seattle — San Francisco
8h 41m stop
07:40 — 16:20 AS356 Alaska Airlines
San Francisco — Boston
16h 34m
including layover
Find flight
from$165
21:59 — 15:29
+1 day
21:59 — 22:55 AS955 Alaska Airlines
Seattle — Portland
8h 6m stop
10:33 — 18:54 AS358 Alaska Airlines
Portland — Boston
14h 30m
including layover
Find flight
from$130
22:51 — 15:29
+1 day
22:50 — 23:44 AS957 Alaska Airlines
Seattle — Portland
7h 17m stop
10:33 — 18:54 AS358 Alaska Airlines
Portland — Boston
13h 38m
including layover
Find flight
from$165
00:25 — 15:05
00:25 — 06:29 AA2818 American Airlines
Seattle — Chicago
3h 26m stop
09:55 — 12:51 AA2098 American Airlines
Chicago — Philadelphia
49m stop
13:40 — 15:05 AA1453 American Airlines
Philadelphia — Boston
11h 40m
including layover
Find flight
from$152
05:45 — 06:48
+1 day
05:45 — 08:36 NK1491 Spirit Airlines
Seattle — Los Angeles
1h 41m stop
10:22 — 18:20 NK2074 Spirit Airlines
Los Angeles — Baltimore
11h 5m stop
05:28 — 06:55 NK523 Spirit Airlines
Baltimore — Boston
22h 3m
including layover
Find flight
from$166
06:11 — 21:07
05:45 — 08:36 NK1491 Spirit Airlines
Seattle — Los Angeles
1h 34m stop
10:22 — 18:20 NK2074 Spirit Airlines
Los Angeles — Baltimore
55m stop
19:32 — 21:02 NK2075 Spirit Airlines
Baltimore — Boston
11h 56m
including layover
Find flight
from$132
14:16 — 15:13
+1 day
14:16 — 16:50 NK414 Spirit Airlines
Seattle — Las Vegas
7h 9m stop
23:59 — 05:05 NK1064 Spirit Airlines
Las Vegas — New Orleans
5h 49m stop
10:54 — 15:13 NK1375 Spirit Airlines
New Orleans — Boston
21h 57m
including layover
Find flight
from$155
16:00 — 14:56
+1 day
16:00 — 18:31 NK414 Spirit Airlines
Seattle — Las Vegas
6h 25m stop
00:56 — 07:44 NK331 Spirit Airlines
Las Vegas — Atlanta
4h 43m stop
12:27 — 14:56 NK1444 Spirit Airlines
Atlanta — Boston
19h 56m
including layover
Find flight
from$202
17:28 — 13:23
+1 day
17:28 — 19:55 NK204 Spirit Airlines
Seattle — Las Vegas
4h stop
23:55 — 07:23 NK1853 Spirit Airlines
Las Vegas — Orlando
2h 57m stop
10:20 — 13:23 NK501 Spirit Airlines
Orlando — Boston
16h 55m
including layover
Find flight
from$145
23:59 — 15:05
+1 day
23:59 — 07:54 AA2793 American Airlines
Seattle — Charlotte
2h 21m stop
10:15 — 11:47 AA1714 American Airlines
Charlotte — Philadelphia
1h 53m stop
13:40 — 15:05 AA1453 American Airlines
Philadelphia — Boston
12h 6m
including layover
Find flight
from$148
*Departure and arrival times - local. Updated on April 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 00:25 to 23:59 from 3 Seattle airports and arrive 00:25 to 23:59 to 4 Boston airports. Average flight time is 5h 14m.

  • The fastest flight 5h 7m
  • Average flight time 5h 14m
  • The earliest flight 00:25
  • The latest flight 23:59
  • Distance 2489 ml

The cheapest months to travel to Boston are november (from 87 $), december (from 108 $), january (from 155 $).

The most expensive months are february (from 212 $), january (from 155 $), december (from 108 $).

What is the lowest airfare Seattle to Boston?

The cheapest plane ticket found by our users is $87. This airfare is for economy class on one-way B6498 flight by JetBlue for November 12, 2024 which leaves Seattle-Tacoma Intl in Seattle at 11:40 am and arrives at Boston Logan at 20:05.

Economy class
$87
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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 9 regular airlines and 4 low-cost airlines. Most of the flights on this route are operated by JetBlue - 1 departures per week at the price of from $ 87 . And the most expensive tickets are offered by Turkish Airlines airline - from $ 2329.

Direct flights

There are 9 nonstop flights on the route. The fastest direct flight is AS424 by Alaska Airlines takes 5h 7m and the cheapest is B6498 by JetBlue for $87.

See more direct flights

Connecting Flights

There are 576 flights with layovers on the route. The fastest connecting flight is DL812 by Delta Air Lines Inc. takes 6h 50m and the cheapest is B6498 by JetBlue for $109.

  • from $221
    Find
  • AA - American Airlines
    from $148
    Find
  • AS - Alaska Airlines
    from $110
    Find
  • F9 - Frontier Airlines
    from $191
    Find
  • SY - Sun Country Airlines
    from $163
    Find
  • TK - Turkish Airlines
    from $1348
    Find
  • UA - United Airlines
    from $152
    Find
  • NK - Spirit Airlines
    from $109
    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 $87
    Find
  • Kenmore Air Harbor SPB-LKE
    Find

Boston airports

  • Boston City Heliport-JBC
    Find
  • 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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