Cheap Flights from Seattle, WA to Boston, MA from $119

Return flight: Boston – Seattle
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On Cheapflightsplus.com you will find 49 connecting flights from Seattle to Boston. You can compare airfare deals from 5 airlines and multiple travel sites from $119, 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: $119 (one-way), $204 (round-trip).
Direct flights
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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 $119. Take a look at the list of flights with layovers from Seattle to Boston from $119. There’re no direct flights. The fastest connecting flight – 7h 2m.
Price Departure Arrival Flight Duration Airline Flight
from $234
Find flight
19:30
Seattle
Seattle-Tacoma Intl
 06:00+1 день
Boston
Logan
 7h 30m
layover
1h 5m - Portland
 Hawaiian Airlines
HA6823
HA6331
from $241
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23:54
Seattle
Seattle-Tacoma Intl
 12:48+1 день
Boston
Logan
 9h 54m
layover
3h 19m - Chicago
 United Airlines
UA747
UA536
from $173
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06:12
Seattle
Seattle-Tacoma Intl
 08:11+2 дня
Boston
Logan
 46h 59m
layover
13h 51m - Denver
23h 30m - Tampa
 Frontier Airlines
F93406
F91114
F91216
from $236
Find flight
23:16
Seattle
Seattle-Tacoma Intl
 07:43+2 дня
Boston
Logan
 29h 27m
layover
9h 15m - Vancouver
11h 41m - Atlanta
 Alaska Airlines
AS2383
WS1596
F93512
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*Departure and arrival times - local. Prices indicated for one-way flights. Information updated on September 12, 2025
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
06:12 — 08:11
+2 days
06:12 — 10:08 F93406 Frontier Airlines
Seattle — Denver
13h 51m stop
23:59 — 05:31 F91114 Frontier Airlines
Denver — Tampa
23h 30m stop
05:01 — 08:11 F91216 Frontier Airlines
Tampa — Boston
46h 59m
including layover
Find flight
from$173
06:12 — 13:48
+1 day
06:12 — 10:08 F93406 Frontier Airlines
Seattle — Denver
13h 56m stop
00:04 — 05:44 F91734 Frontier Airlines
Denver — Orlando
4h 58m stop
10:42 — 13:48 NK2178 Spirit Airlines
Orlando — Boston
28h 36m
including layover
Find flight
from$213
13:40 — 15:00
+1 day
13:40 — 15:52 HA6901 Hawaiian Airlines
Seattle — San Francisco
14h 18m stop
06:10 — 15:00 HA6696 Hawaiian Airlines
San Francisco — Boston
22h 20m
including layover
Find flight
from$299
15:19 — 15:08
+1 day
15:19 — 17:35 UA2355 United Airlines
Seattle — San Francisco
12h 45m stop
06:20 — 15:08 UA1015 United Airlines
San Francisco — Boston
20h 49m
including layover
Find flight
from$284
15:19 — 23:56
+1 day
15:19 — 17:35 UA2355 United Airlines
Seattle — San Francisco
21h 35m stop
15:10 — 23:56 UA1372 United Airlines
San Francisco — Boston
29h 37m
including layover
Find flight
from$292
15:55 — 15:00
+1 day
15:55 — 18:09 HA6904 Hawaiian Airlines
Seattle — San Francisco
12h 1m stop
06:10 — 15:00 HA6696 Hawaiian Airlines
San Francisco — Boston
20h 5m
including layover
Find flight
from$298
15:55 — 15:00
+1 day
15:55 — 18:09 AS1284 Alaska Airlines
Seattle — San Francisco
12h 1m stop
06:10 — 15:00 AS425 Alaska Airlines
San Francisco — Boston
20h 5m
including layover
Find flight
from$307
16:36 — 11:13
+1 day
16:36 — 19:15 F94830 Frontier Airlines
Seattle — Las Vegas
3h 1m stop
22:16 — 05:45 NK954 Spirit Airlines
Las Vegas — Miami
2h 15m stop
08:00 — 11:13 NK1300 Spirit Airlines
Miami — Boston
15h 37m
including layover
Find flight
from$279
19:30 — 06:00
+1 day
19:30 — 20:25 HA6823 Hawaiian Airlines
Seattle — Portland
1h 5m stop
21:30 — 06:00 HA6331 Hawaiian Airlines
Portland — Boston
7h 30m
including layover
Find flight
from$234
20:08 — 15:00
+1 day
20:08 — 22:23 HA6898 Hawaiian Airlines
Seattle — San Francisco
7h 47m stop
06:10 — 15:00 HA6696 Hawaiian Airlines
San Francisco — Boston
15h 52m
including layover
Find flight
from$298
20:31 — 22:47
+1 day
20:31 — 23:31 F93974 Frontier Airlines
Seattle — Phoenix
13h 56m stop
13:27 — 20:14 NK1333 Spirit Airlines
Phoenix — Detroit
35m stop
20:49 — 22:47 NK2152 Spirit Airlines
Detroit — Boston
23h 16m
including layover
Find flight
from$194
21:40 — 15:00
+1 day
21:40 — 00:04 HA6897 Hawaiian Airlines
Seattle — San Francisco
6h 6m stop
06:10 — 15:00 HA6696 Hawaiian Airlines
San Francisco — Boston
14h 20m
including layover
Find flight
from$298
23:16 — 07:43
+2 days
23:16 — 00:15 AS2383 Alaska Airlines
Seattle — Vancouver
9h 15m stop
09:30 — 17:24 WS1596 WestJet
Vancouver — Atlanta
11h 41m stop
05:05 — 07:43 F93512 Frontier Airlines
Atlanta — Boston
29h 27m
including layover
Find flight
from$236
23:54 — 12:48
+1 day
23:54 — 05:55 UA747 United Airlines
Seattle — Chicago
3h 19m stop
09:13 — 12:48 UA536 United Airlines
Chicago — Boston
9h 54m
including layover
Find flight
from$241
23:54 — 11:01
+1 day
23:50 — 05:53 UA747 United Airlines
Seattle — Chicago
1h 36m stop
07:45 — 11:12 UA2067 United Airlines
Chicago — Boston
8h 7m
including layover
Find flight
from$290
*Departure and arrival times - local. Updated on September 12, 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 00:59 to 23:59 from 3 Seattle airports and arrive 00:59 to 23:59 to 4 Boston airports. Average flight time is 14h 20m.

  • The fastest flight 7h 2m
  • Average flight time 14h 20m
  • The earliest flight 00:59
  • The latest flight 23:59
  • Distance 2489 ml

Popular Airlines on the Route

The flight Seattle — Boston is served by 5 regular airlines and 1 low-cost airline. Most of the flights on this route are operated by Alaska Airlines - 13 departures per week at the price of from $ 236 . And the most expensive tickets are offered by Vanair Limited airline - from $ 1217.

Direct flights

There’re no direct flights on this route. Try flights with stops.

Connecting Flights

There are 49 flights with layovers on the route. The fastest connecting flight is UA747 by United Airlines takes 7h 2m.

  • AS - Alaska Airlines
    from $236
    Find
  • F9 - Frontier Airlines
    from $173
    Find
  • HA - Hawaiian Airlines
    from $234
    Find
  • UA - United Airlines
    from $241
    Find
  • X4 - Vanair Limited
    from $1217
    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
    from $1217
    Find
  • Seattle-Tacoma Intl-SEA
    from $173
    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

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.

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.

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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