Cheap Flights from Boston, MA to Seattle, WA from $125

One way Round trip

Adults

Children under 12

Infants under 2 without place

Economy

Business

First

done

Return flight: Seattle – Boston

Page navigation

Price Calendar Cheap Flights Flights Schedule

On Cheapflightsplus.com you will find 7 direct and 220 connecting flights from Boston to Seattle. You can compare airfare deals from 7 airlines and multiple travel sites from $125, book and save on cheap plane tickets and last minute offers. Also check out BOS-SEA flight schedule to find best flight time, convenient departure and arrival airports.

Find One-Way and Round-Trip Boston to Seattle 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 to choose departure date Check to choose departure date

Check prices for return flight

Find flights

Best Flights from Boston to Seattle Today

Take a look at the list of non stop flights and flights with layovers from Boston to Seattle with the lowest price of $125. The fastest direct flight takes 6h 10m and the fastest connecting – 7h 48m.

Price	Departure	Arrival	Flight Duration	Airline	Flight
from $125 Find flight	16:00 Boston Logan	19:15 Seattle Seattle-Tacoma Intl	6h 15m	Hawaiian Airlines	HA4792
from $128 Find flight	18:40 Boston Logan	21:50 Seattle Seattle-Tacoma Intl	6h 10m	Alaska Airlines	AS819
from $128 Find flight	16:00 Boston Logan	19:15 Seattle Seattle-Tacoma Intl	6h 15m	Alaska Airlines	AS393
from $199 Find flight	16:26 Boston Logan	19:46 Seattle Seattle-Tacoma Intl	6h 20m	Hawaiian Airlines	HA4786
from $204 Find flight	16:26 Boston Logan	19:46 Seattle Seattle-Tacoma Intl	6h 20m	Alaska Airlines	AS307
from $245 Find flight	16:25 Boston Logan	19:48 Seattle Seattle-Tacoma Intl	6h 23m	Hawaiian Airlines	HA4808
from $249 Find flight	16:25 Boston Logan	19:48 Seattle Seattle-Tacoma Intl	6h 23m	Alaska Airlines	AS304
from $131 Find flight	07:45 Boston Logan	14:50 Seattle Seattle-Tacoma Intl	10h 5m layover 0h 56m - San Diego	Hawaiian Airlines	HA4821 HA6487
from $139 Find flight	07:45 Boston Logan	14:50 Seattle Seattle-Tacoma Intl	10h 5m layover 0h 56m - San Diego	Alaska Airlines	AS260 AS1137
from $142 Find flight	17:37 Boston Logan	22:29 Seattle Seattle-Tacoma Intl	7h 52m layover 0h 40m - Portland	Hawaiian Airlines	HA6255 HA6414
from $150 Find flight	17:37 Boston Logan	22:29 Seattle Seattle-Tacoma Intl	7h 52m layover 0h 40m - Portland	Alaska Airlines	AS1319 AS2332
from $180 Find flight	12:40 Boston Logan	18:30 Seattle Seattle-Tacoma Intl	8h 50m layover 1h 29m - Newark	United Airlines	UA475 UA2403
from $180 Find flight	16:27 Boston Logan	22:18 Seattle Seattle-Tacoma Intl	8h 51m layover 1h 13m - Chicago	United Airlines	UA2040 UA2211
from $180 Find flight	09:43 Boston Logan	15:42 Seattle Seattle-Tacoma Intl	8h 59m layover 1h 32m - Chicago	United Airlines	UA378 UA1160
from $200 Find flight	16:32 Boston Logan	00:56+1 день Seattle Seattle-Tacoma Intl	11h 24m layover 1h 37m - Newark 1h 4m - Washington D.C.	United Airlines	UA521 UA1332 UA716
from $224 Find flight	11:25 Boston Logan	15:53+1 день Seattle Seattle-Tacoma Intl	31h 28m layover 19h 4m - Baltimore 3h 9m - Las Vegas	Spirit Airlines	NK935 NK2377 NK781

Show all tickets

*Departure and arrival times - local. Prices indicated for one-way flights. Information updated on July 12, 2025

Flight Schedule Boston (Massachusetts) to Seattle (Washington)

Full flight schedule will help you in detecting at what time planes fly from Boston to Seattle. 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	Flight Details	Flight Duration	Price
16:00 — 19:15	16:00 — 19:15 HA4792 Hawaiian Airlines Boston — Seattle	6h 15m	Find flight from$125
16:00 — 19:15	16:00 — 19:15 AS393 Alaska Airlines Boston — Seattle	6h 15m	Find flight from$128
16:25 — 19:48	16:25 — 19:48 HA4808 Hawaiian Airlines Boston — Seattle	6h 23m	Find flight from$245
16:25 — 19:48	16:25 — 19:48 AS304 Alaska Airlines Boston — Seattle	6h 23m	Find flight from$249
16:26 — 19:46	16:26 — 19:46 HA4786 Hawaiian Airlines Boston — Seattle	6h 20m	Find flight from$199
16:26 — 19:46	16:26 — 19:46 AS307 Alaska Airlines Boston — Seattle	6h 20m	Find flight from$204
18:40 — 21:50	18:40 — 21:50 AS819 Alaska Airlines Boston — Seattle	6h 10m	Find flight from$128
05:30 — 11:50	05:30 — 07:04 UA1734 United Airlines Boston — Washington D.C. 1h 56m stop 09:00 — 11:50 UA2729 United Airlines Washington D.C. — Seattle	9h 20m including layover	Find flight from$181
06:00 — 15:33	06:00 — 09:09 HA4818 Hawaiian Airlines Boston — Portland 5h 21m stop 14:30 — 15:33 HA6314 Hawaiian Airlines Portland — Seattle	12h 33m including layover	Find flight from$196
06:02 — 15:14	06:02 — 09:33 UA2441 United Airlines Boston — San Francisco 3h 27m stop 13:00 — 15:14 UA2041 United Airlines San Francisco — Seattle	12h 12m including layover	Find flight from$191
07:45 — 14:50	07:45 — 10:50 HA4821 Hawaiian Airlines Boston — San Diego 56m stop 11:46 — 14:50 HA6487 Hawaiian Airlines San Diego — Seattle	10h 5m including layover	Find flight from$131
07:45 — 16:51	07:45 — 10:50 HA4821 Hawaiian Airlines Boston — San Diego 2h 59m stop 13:49 — 16:51 HA6532 Hawaiian Airlines San Diego — Seattle	12h 6m including layover	Find flight from$131
08:05 — 15:46	08:05 — 11:36 UA1008 United Airlines Boston — San Francisco 1h 59m stop 13:35 — 15:46 UA2397 United Airlines San Francisco — Seattle	10h 41m including layover	Find flight from$181
08:15 — 15:14	08:15 — 11:46 UA1008 United Airlines Boston — San Francisco 1h 14m stop 13:00 — 15:14 UA2041 United Airlines San Francisco — Seattle	9h 59m including layover	Find flight from$182
09:03 — 16:20	09:03 — 10:54 UA600 United Airlines Boston — Chicago 2h 46m stop 13:40 — 16:20 UA1485 United Airlines Chicago — Seattle	10h 17m including layover	Find flight from$181
09:43 — 15:42	09:43 — 11:33 UA378 United Airlines Boston — Chicago 1h 32m stop 13:05 — 15:42 UA1160 United Airlines Chicago — Seattle	8h 59m including layover	Find flight from$180
10:30 — 18:49	10:30 — 14:01 UA366 United Airlines Boston — San Francisco 2h 34m stop 16:35 — 18:49 UA2339 United Airlines San Francisco — Seattle	11h 19m including layover	Find flight from$182
10:40 — 16:20	10:40 — 12:31 UA2430 United Airlines Boston — Chicago 1h 9m stop 13:40 — 16:20 UA1485 United Airlines Chicago — Seattle	8h 40m including layover	Find flight from$181
11:00 — 18:49	09:35 — 11:26 UA378 United Airlines Boston — Chicago 3h 20m stop 16:10 — 18:53 UA2278 United Airlines Chicago — Seattle	10h 49m including layover	Find flight from$182
11:41 — 22:43	11:41 — 13:54 SY252 Sun Country Airlines Boston — Minneapolis 7h 6m stop 21:00 — 22:45 SY289 Sun Country Airlines Minneapolis — Seattle	14h 2m including layover	Find flight from$182
12:40 — 18:30	12:40 — 14:01 UA475 United Airlines Boston — Newark 1h 29m stop 15:30 — 18:30 UA2403 United Airlines Newark — Seattle	8h 50m including layover	Find flight from$180
12:45 — 18:49	12:30 — 14:21 UA1732 United Airlines Boston — Chicago 1h 35m stop 16:10 — 18:53 UA2278 United Airlines Chicago — Seattle	9h 4m including layover	Find flight from$180
14:00 — 20:56	14:00 — 17:31 UA1074 United Airlines Boston — San Francisco 1h 9m stop 18:55 — 21:11 UA2019 United Airlines San Francisco — Seattle	9h 56m including layover	Find flight from$181
14:46 — 20:48	14:46 — 16:30 UA597 United Airlines Boston — Washington D.C. 1h 25m stop 17:55 — 20:48 UA326 United Airlines Washington D.C. — Seattle	9h 2m including layover	Find flight from$181
15:30 — 21:17	15:25 — 18:09 UA2297 United Airlines Boston — Denver 1h 16m stop 19:25 — 21:23 UA299 United Airlines Denver — Seattle	8h 47m including layover	Find flight from$181
15:30 — 22:59	15:25 — 18:09 UA2297 United Airlines Boston — Denver 2h 56m stop 21:00 — 22:59 UA2651 United Airlines Denver — Seattle	10h 29m including layover	Find flight from$181
17:37 — 22:29	17:06 — 20:24 HA6255 Hawaiian Airlines Boston — Portland 40m stop 21:59 — 22:59 HA6414 Hawaiian Airlines Portland — Seattle	7h 52m including layover	Find flight from$142
17:37 — 22:29	17:37 — 20:50 AS1319 Alaska Airlines Boston — Portland 40m stop 21:30 — 22:29 AS2332 Alaska Airlines Portland — Seattle	7h 52m including layover	Find flight from$150
18:03 — 23:59	18:03 — 20:00 UA1015 United Airlines Boston — Chicago 1h 16m stop 21:16 — 23:59 UA2200 United Airlines Chicago — Seattle	8h 56m including layover	Find flight from$181
19:12 — 00:56 +1 day	19:12 — 20:58 UA2136 United Airlines Boston — Washington D.C. 1h 8m stop 22:06 — 00:56 UA716 United Airlines Washington D.C. — Seattle	8h 44m including layover	Find flight from$181

Departure	Arrival	Flight Details	Flight Time	Price
		stop stop	including layover	Find flight from$

*Departure and arrival times - local. Updated on July 12, 2025

Flight Information

Below we will explain in detail what the flights cost on the destination from Boston to Seattle depends on and how to choose the most interesting flight option for you.

Distance between Boston and Seattle is 4005 miles. Time difference between the cities is 3h. Airplanes depart 05:00 to 21:35 from 4 Boston airports and arrive 05:00 to 21:35 to 3 Seattle airports. Average flight time is 6h 20m.

The fastest flight 6h 10m
Average flight time 6h 20m
The earliest flight 05:00
The latest flight 21:35
Distance 2489 ml

The cheapest months to travel to Seattle are september (from 125 $), august (from 130 $), july (from 167 $).

The most expensive months are december (from 413 $), february (from 348 $), november (from 246 $).

What is the lowest airfare Boston to Seattle?

The cheapest plane ticket found by our users is $125. This airfare is for economy class on one-way HA4792 flight by Hawaiian Airlines for September 27, 2025 which leaves Logan in Boston at 16:00 am and arrives at Seattle Seattle-Tacoma Intl at 19:15.

Economy class

$125

Find

Business class

Find

First class

Find

Popular Airlines on the Route

The flight Boston — Seattle is served by 7 regular airlines and 3 low-cost airlines. Most of the flights on this route are operated by Alaska Airlines - 44 departures per week at the price of from $ 128 . And the most expensive tickets are offered by Turkish Airlines airline - from $ 1871.

Direct flights

There are 7 nonstop flights on the route. The fastest direct flight is AS819 by Alaska Airlines takes 6h 10m and the cheapest is HA4792 by Hawaiian Airlines for $125.

AS - Alaska Airlines

from $128

Find
HA - Hawaiian Airlines

from $125

Find

See more direct flights

Connecting Flights

There are 220 flights with layovers on the route. The fastest connecting flight is HA6255 by Hawaiian Airlines takes 7h 48m and the cheapest is HA4792 by Hawaiian Airlines for $131.

AS - Alaska Airlines

from $139

Find
SY - Sun Country Airlines

from $182

Find
TK - Turkish Airlines

from $1871

Find
HA - Hawaiian Airlines

from $131

Find
UA - United Airlines

from $180

Find
NK - Spirit Airlines

from $224

Find
G4 - Allegiant Air

from $242

Find

See more connecting flights

Airports

You can fly from Boston to Seattle from 4 airports (Boston City Heliport, Boston RT128 Rail, Boston South Rail, Logan).

Boston airports

Boston City Heliport-JBC

Find
Boston RT128 Rail-ZRU

Find
Boston South Rail-ZTO

Find
Logan-BOS

from $125
Find

Seattle airports

Boeing Field International Airport-BFI

Find
Seattle-Tacoma Intl-SEA

Find
Kenmore Air Harbor SPB-LKE

Find

Airplanes

There are flights to Seattle from Boston by 7 airlines that use 0 aircraft brands. They range from huge modern airplanes to small-sized.

Top Domestic Destinations from Boston

You may also consider searching for discounted plane tickets to some other popular places from Boston within United States.

Boston — New York

from $57

Find
Boston — Orlando

from $67

Find
Boston — Chicago

from $59

Find
Boston — Miami

from $56

Find
Boston — Washington D.C.

from $64

Find
Boston — Denver

from $65

Find
Boston — Nashville

from $71

Find
Boston — Tampa

from $63

Find
Boston — Las Vegas

from $63

Find
Boston — Seattle

from $60

Find

Top International Destinations from Boston

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.

Boston — London

from $76

Find
Boston — Paris

from $76

Find
Boston — Toronto

from $54

Find
Boston — Dublin

from $54

Find
Boston — Aruba

from $69

Find
Boston — Rome

from $77

Find
Boston — Cancun

from $78

Find
Boston — Lisbon

from $66

Find
Boston — Montreal

from $77

Find
Boston — Barcelona

from $67

Find

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.