Alaska Airlines Boston to Seattle Flights

Return flight: Seattle – Boston

Cheapflightsplus.com will find cheap Alaska Airlines flights from Boston to Seattle. Compare airline ticket prices and book air tickets starting from $148 from trusted online travel agencies, web sites and directly from airlines. Check flights schedule of Alaska Airlines, arrivals and departure details below.

Find Cheap Airfare Boston (MA) — Seattle (WA) by Alaska Airlines

To find cheap tickets choose a day of your departure with attractive price on the graph below and click «Find flights». For round trip flights please click «Check prices for return flight». The cheapest airfare is in december: one-way - $148, two-way – $254.
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Below is a detailed 2024 flight schedule for today, tomorrow and all other days. It may vary depending on season and a day of the week of your desired trip. We recommend booking your itinerary at least 2 weeks prior your travel to get the best price and availability by the airline.
Departure Arrival Flight Details Flight Time Price
5:23 pm — 9:00 pm
5:23 pm — 9:00 pm AS362 Alaska Airlines
Boston — Seattle
6h 37m
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from$376
7:00 am — 10:37 am
7:00 am — 10:37 am AS401 Alaska Airlines
Boston — Seattle
6h 37m
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from$307
10:15 am — 3:59 pm
10:15 am — 12:18 pm AS6609 Alaska Airlines
Boston — Chicago
52m stop
1:10 pm — 3:59 pm AS335 Alaska Airlines
Chicago — Seattle
8h 44m
including layover
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from$518
12:00 pm — 5:51 pm
8:45 am — 10:50 am AS6761 Alaska Airlines
Boston — Chicago
1h 1m stop
1:07 pm — 3:55 pm AS335 Alaska Airlines
Chicago — Seattle
8h 51m
including layover
Find flight
from$169
12:18 pm — 8:11 pm
12:18 pm — 2:20 pm AS6761 Alaska Airlines
Boston — Chicago
3h 8m stop
5:28 pm — 8:11 pm AS353 Alaska Airlines
Chicago — Seattle
10h 53m
including layover
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from$529
2:41 pm — 8:35 pm
2:26 pm — 4:28 pm AS6392 Alaska Airlines
Boston — Chicago
1h 11m stop
5:34 pm — 8:23 pm AS353 Alaska Airlines
Chicago — Seattle
8h 54m
including layover
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from$299
2:52 pm — 9:46 pm
2:26 pm — 4:28 pm AS6392 Alaska Airlines
Boston — Chicago
2h 3m stop
7:14 pm — 10:00 pm AS421 Alaska Airlines
Chicago — Seattle
9h 54m
including layover
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from$168
4:13 pm — 11:44 pm
4:13 pm — 7:55 pm AS389 Alaska Airlines
Boston — San Diego
41m stop
8:36 pm — 11:44 pm AS1199 Alaska Airlines
San Diego — Seattle
10h 31m
including layover
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from$148
5:24 pm — 9:30 am
+1 day
4:13 pm — 7:55 pm AS389 Alaska Airlines
Boston — San Diego
9h 8m stop
6:15 am — 9:24 am AS1245 Alaska Airlines
San Diego — Seattle
19h 6m
including layover
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from$215
5:24 pm — 10:10 am
+1 day
4:13 pm — 7:55 pm AS389 Alaska Airlines
Boston — San Diego
9h 48m stop
8:00 am — 11:11 am AS1154 Alaska Airlines
San Diego — Seattle
19h 46m
including layover
Find flight
from$215
6:39 pm — 9:18 am
+1 day
6:39 pm — 10:39 pm AS357 Alaska Airlines
Boston — San Francisco
8h 21m stop
7:00 am — 9:18 am AS1013 Alaska Airlines
San Francisco — Seattle
17h 39m
including layover
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from$205
7:59 pm — 6:10 pm
+1 day
7:59 pm — 11:35 pm AS311 Alaska Airlines
Boston — Portland
17h 40m stop
5:15 pm — 6:10 pm AS2082 Alaska Airlines
Portland — Seattle
25h 11m
including layover
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from$215
7:59 pm — 12:41 pm
+1 day
7:59 pm — 11:13 pm AS311 Alaska Airlines
Boston — Portland
12h 5m stop
11:49 am — 12:55 pm AS970 Alaska Airlines
Portland — Seattle
19h 42m
including layover
Find flight
from$237
8:20 pm — 10:20 am
+1 day
7:59 pm — 11:28 pm AS311 Alaska Airlines
Boston — Portland
9h 29m stop
9:15 am — 10:16 am AS2229 Alaska Airlines
Portland — Seattle
17h
including layover
Find flight
from$253
8:45 am — 4:55 pm
8:45 am — 10:45 am AS4570 Alaska Airlines
Boston — Chicago
3h 22m stop
2:07 pm — 4:55 pm AS335 Alaska Airlines
Chicago — Seattle
11h 10m
including layover
Find flight
from$274
4:23 pm — 9:35 am
+1 day
4:23 pm — 8:22 pm AS389 Alaska Airlines
Boston — San Diego
1h 37m stop
9:59 pm — 11:45 pm AS3458 Alaska Airlines
San Diego — San Francisco
7h 35m stop
7:20 am — 9:35 am AS1013 Alaska Airlines
San Francisco — Seattle
20h 12m
including layover
Find flight
from$214
6:39 pm — 10:59 am
+1 day
6:39 pm — 10:39 pm AS357 Alaska Airlines
Boston — San Francisco
7h 21m stop
6:00 am — 7:29 am AS3423 Alaska Airlines
San Francisco — Los Angeles
31m stop
8:00 am — 10:59 am AS1179 Alaska Airlines
Los Angeles — Seattle
19h 20m
including layover
Find flight
from$231
*Departure and arrival times are local. Last updated on 11/22/2024

Flight Information

There are 2 flights by Alaska Airlines from Boston to Seattle every week with departures from Logan, Boston City Heliport, Boston RT128 Rail, Boston South Rail. All flights arrive at Seattle-Tacoma Intl, Boeing Field International Airport, Kenmore Air Harbor SPB.

Departures start from 10:15 am to 8:45 am. Nonstop flight is 6h 37m. The time difference between Boston and Seattle is 3h.

  • The fastest flight 6h 37m
  • Average flight time 6h 37m
  • The earliest flight 10:15 am
  • The latest flight 8:45 am
  • Distance 2489 ml

The cheapest months for traveling to Seattle are december (from 148 $), november (from 173 $), february (from 191 $).

The most expensive and popular months are january (from 215 $), february (from 191 $), november (from 173 $).

The cheapest flight by Alaska Airlines that our users were able to find is $148. This airfare is economy class on one-way AS389 flight for December 13, 2024 leaving Logan in Boston at 4:13 pm, it includes all taxes and additional fees.

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Other Popular Airlines on the Route

Besides Alaska Airlines there are other 4 airline carriers between Boston and Seattle. Please review schedules and prices from the most popular airlines to find the best airfare deals from Boston to Seattle.

Nonstop flights

There are 2 direct flights every day from Boston. Airlines and fares are below:

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Connecting Flights

List of flights with layovers (1 and more stops):

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How to book an air 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 airfare.
  • 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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