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

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On Cheapflightsplus.com you will find 15 direct and 433 connecting flights from Boston to Seattle. You can compare airfare deals from 7 airlines and multiple travel sites from $119, 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: $119 (one-way), $204 (round-trip).

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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 $119. The fastest direct flight takes 6h 8m and the fastest connecting – 7h 48m.

Price	Departure	Arrival	Flight Duration	Airline	Flight
from $119 Find flight	07:30 Boston Logan	10:40 Seattle Seattle-Tacoma Intl	6h 10m	Hawaiian Airlines	HA4823
from $122 Find flight	18:40 Boston Logan	21:50 Seattle Seattle-Tacoma Intl	6h 10m	Alaska Airlines	AS819
from $147 Find flight	09:00 Boston Logan	12:09 Seattle Seattle-Tacoma Intl	6h 9m	Hawaiian Airlines	HA4824
from $125 Find flight	07:45 Boston Logan	14:50 Seattle Seattle-Tacoma Intl	10h 5m layover 0h 56m - San Diego	Hawaiian Airlines	HA4821 HA6487
from $133 Find flight	07:45 Boston Logan	14:50 Seattle Seattle-Tacoma Intl	10h 5m layover 0h 56m - San Diego	Alaska Airlines	AS260 AS1137
from $146 Find flight	21:40 Boston Logan	15:03+1 день Seattle Seattle-Tacoma Intl	20h 23m layover 6h 47m - Baltimore 4h 8m - Las Vegas	Spirit Airlines	NK2523 NK2015 NK2327
from $180 Find flight	06:00 Boston Logan	14:25+1 день Seattle Seattle-Tacoma Intl	35h 25m layover 23h 46m - Baltimore 2h 15m - Las Vegas	Spirit Airlines	NK2106 NK2015 NK2327

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*Departure and arrival times - local. Prices indicated for one-way flights. Information updated on September 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
07:30 — 10:40	07:30 — 10:40 HA4823 Hawaiian Airlines Boston — Seattle	6h 10m	Find flight from$119
07:30 — 10:40	07:30 — 10:40 AS459 Alaska Airlines Boston — Seattle	6h 10m	Find flight from$123
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$125
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$125
07:45 — 14:50	07:45 — 10:50 AS260 Alaska Airlines Boston — San Diego 56m stop 11:46 — 14:50 AS1137 Alaska Airlines San Diego — Seattle	10h 5m including layover	Find flight from$133
09:00 — 12:09	09:00 — 12:09 HA4824 Hawaiian Airlines Boston — Seattle	6h 9m	Find flight from$147
09:00 — 12:09	09:00 — 12:09 AS537 Alaska Airlines Boston — Seattle	6h 9m	Find flight from$151
16:00 — 19:15	16:00 — 19:15 HA4792 Hawaiian Airlines Boston — Seattle	6h 15m	Find flight from$119
16:00 — 19:15	16:00 — 19:15 AS393 Alaska Airlines Boston — Seattle	6h 15m	Find flight from$122
16:30 — 19:41	16:30 — 19:41 HA4822 Hawaiian Airlines Boston — Seattle	6h 11m	Find flight from$147
16:30 — 19:41	16:30 — 19:41 AS364 Alaska Airlines Boston — Seattle	6h 11m	Find flight from$151
16:49 — 23:57	16:49 — 20:12 HA4821 Hawaiian Airlines Boston — San Diego 38m stop 20:50 — 23:57 HA6372 Hawaiian Airlines San Diego — Seattle	10h 8m including layover	Find flight from$145
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$135
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$143
18:40 — 21:50	18:40 — 21:50 AS819 Alaska Airlines Boston — Seattle	6h 10m	Find flight from$122

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

*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 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 21:40 from 4 Boston airports and arrive 05:00 to 21:40 to 3 Seattle airports. Average flight time is 6h 11m.

The fastest flight 6h 8m
Average flight time 6h 11m
The earliest flight 05:00
The latest flight 21:40
Distance 2489 ml

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 - 82 departures per week at the price of from $ 122 . And the most expensive tickets are offered by Turkish Airlines airline - from $ 1784.

Direct flights

There are 15 nonstop flights on the route. The fastest direct flight is HA4825 by Hawaiian Airlines takes 6h 8m.

AS - Alaska Airlines

from $122

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HA - Hawaiian Airlines

from $119

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Connecting Flights

There are 433 flights with layovers on the route. The fastest connecting flight is HA6255 by Hawaiian Airlines takes 7h 48m.

AS - Alaska Airlines

from $133

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SY - Sun Country Airlines

from $174

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TK - Turkish Airlines

from $1784

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HA - Hawaiian Airlines

from $125

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UA - United Airlines

from $172

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NK - Spirit Airlines

from $146

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G4 - Allegiant Air

from $214

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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

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Boston RT128 Rail-ZRU

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Boston South Rail-ZTO

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Logan-BOS

from $119
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Seattle airports

Boeing Field International Airport-BFI

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Seattle-Tacoma Intl-SEA

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Kenmore Air Harbor SPB-LKE

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Airplanes

There are flights to Seattle from Boston by 7 airlines that use 1 aircraft brands. They range from huge modern airplanes to small-sized.

Boeing 737-100/200

from $243

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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

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Boston — Orlando

from $67

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Boston — Chicago

from $59

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Boston — Miami

from $56

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Boston — Washington D.C.

from $64

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Boston — Denver

from $65

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Boston — Nashville

from $71

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Boston — Tampa

from $63

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Boston — Las Vegas

from $63

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Boston — Seattle

from $60

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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

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Boston — Paris

from $76

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Boston — Toronto

from $54

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Boston — Dublin

from $54

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Boston — Aruba

from $69

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Boston — Rome

from $77

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Boston — Cancun

from $78

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Boston — Lisbon

from $66

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Boston — Montreal

from $77

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Boston — Barcelona

from $67

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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.