Cheap Flights from Boston, MA to Seattle, WA from $194

One way Round trip

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On Cheapflightsplus.com you will find 25 connecting flights from Boston to Seattle. You can compare airfare deals from 3 airlines and multiple travel sites from $194, 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: $194 (one-way), $333 (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 $194. Take a look at the list of flights with layovers from Boston to Seattle from $194. There’re no direct flights. The fastest connecting flight – 8h 44m.

Price	Departure	Arrival	Flight Duration	Airline	Flight
from $211 Find flight	11:00 Boston Logan	18:29 Seattle Seattle-Tacoma Intl	10h 29m layover 1h 15m - San Francisco	United Airlines	UA1413 UA2603
from $215 Find flight	14:00 Boston Logan	20:19 Seattle Seattle-Tacoma Intl	9h 19m layover 1h 33m - Washington D.C.	United Airlines	UA721 UA1730
from $238 Find flight	19:59 Boston Logan	18:10+1 день Seattle Seattle-Tacoma Intl	25h 11m layover 17h 40m - Portland	Alaska Airlines	AS311 AS2082
from $275 Find flight	12:25 Boston Logan	18:45 Seattle Seattle-Tacoma Intl	9h 20m layover 1h 38m - Chicago	United Airlines	UA1732 UA2278
from $275 Find flight	10:52 Boston Logan	18:45 Seattle Seattle-Tacoma Intl	10h 53m layover 3h 11m - Chicago	United Airlines	UA1823 UA2278
from $275 Find flight	05:45 Boston Logan	14:22 Seattle Seattle-Tacoma Intl	11h 37m layover 2h 24m - San Francisco	United Airlines	UA2367 UA419
from $317 Find flight	12:04 Boston Logan	22:17 Seattle Seattle-Tacoma Intl	13h 13m layover 5h 28m - Newark	United Airlines	UA1603 UA2044
from $317 Find flight	10:03 Boston Logan	22:17 Seattle Seattle-Tacoma Intl	15h 14m layover 7h 28m - Newark	United Airlines	UA1219 UA2044
from $319 Find flight	15:10 Boston Logan	22:45 Seattle Seattle-Tacoma Intl	10h 35m layover 2h 37m - Denver	United Airlines	UA778 UA2651
from $323 Find flight	06:00 Boston Logan	11:44 Seattle Seattle-Tacoma Intl	8h 44m layover 0h 56m - Chicago	United Airlines	UA1414 UA1705
from $323 Find flight	08:00 Boston Logan	15:54 Seattle Seattle-Tacoma Intl	10h 54m layover 1h 40m - San Francisco	United Airlines	UA1008 UA1387
from $323 Find flight	05:45 Boston Logan	15:54 Seattle Seattle-Tacoma Intl	13h 9m layover 3h 55m - San Francisco	United Airlines	UA2367 UA1387
from $352 Find flight	09:25 Boston Logan	20:19 Seattle Seattle-Tacoma Intl	13h 54m layover 6h 8m - Washington D.C.	United Airlines	UA2098 UA1730
from $194 Find flight	06:00 Boston Logan	23:10 Seattle Seattle-Tacoma Intl	20h 10m layover 5h 54m - Baltimore 4h 23m - Los Angeles	Spirit Airlines	NK2072 NK1912 NK804
from $237 Find flight	16:23 Boston Logan	09:35+1 день Seattle Seattle-Tacoma Intl	20h 12m layover 1h 37m - San Diego 7h 35m - San Francisco	Alaska Airlines	AS389 AS3458 AS1013
from $281 Find flight	08:36 Boston Logan	18:45 Seattle Seattle-Tacoma Intl	13h 9m layover 1h 30m - Newark 2h 54m - Chicago	United Airlines	UA515 UA1875 UA2278

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*Departure and arrival times - local. Prices indicated for one-way flights. Information updated on March 01, 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
05:45 — 14:22	05:45 — 09:40 UA2367 United Airlines Boston — San Francisco 2h 24m stop 12:04 — 14:22 UA419 United Airlines San Francisco — Seattle	11h 37m including layover	Find flight from$275
05:45 — 15:54	05:45 — 09:40 UA2367 United Airlines Boston — San Francisco 3h 55m stop 13:35 — 15:54 UA1387 United Airlines San Francisco — Seattle	13h 9m including layover	Find flight from$323
06:00 — 11:44	06:00 — 08:04 UA1414 United Airlines Boston — Chicago 56m stop 09:00 — 11:44 UA1705 United Airlines Chicago — Seattle	8h 44m including layover	Find flight from$323
08:00 — 15:54	08:00 — 11:55 UA1008 United Airlines Boston — San Francisco 1h 40m stop 13:35 — 15:54 UA1387 United Airlines San Francisco — Seattle	10h 54m including layover	Find flight from$323
09:20 — 18:45	09:20 — 11:22 UA260 United Airlines Boston — Chicago 4h 43m stop 16:05 — 18:45 UA2278 United Airlines Chicago — Seattle	12h 25m including layover	Find flight from$370
09:25 — 20:19	09:25 — 11:11 UA2098 United Airlines Boston — Washington D.C. 6h 8m stop 17:19 — 20:19 UA1730 United Airlines Washington D.C. — Seattle	13h 54m including layover	Find flight from$352
10:03 — 22:17	10:03 — 11:30 UA1219 United Airlines Boston — Newark 7h 28m stop 18:58 — 22:17 UA2044 United Airlines Newark — Seattle	15h 14m including layover	Find flight from$317
10:52 — 18:45	10:52 — 12:54 UA1823 United Airlines Boston — Chicago 3h 11m stop 16:05 — 18:45 UA2278 United Airlines Chicago — Seattle	10h 53m including layover	Find flight from$275
11:00 — 18:29	11:00 — 14:49 UA1413 United Airlines Boston — San Francisco 1h 15m stop 16:23 — 18:41 UA2603 United Airlines San Francisco — Seattle	10h 29m including layover	Find flight from$211
11:00 — 00:55 +1 day	11:00 — 14:55 UA1413 United Airlines Boston — San Francisco 7h 40m stop 22:35 — 00:55 UA1743 United Airlines San Francisco — Seattle	16h 55m including layover	Find flight from$346
12:04 — 22:17	12:04 — 13:30 UA1603 United Airlines Boston — Newark 5h 28m stop 18:58 — 22:17 UA2044 United Airlines Newark — Seattle	13h 13m including layover	Find flight from$317
12:25 — 18:45	12:25 — 14:21 UA1732 United Airlines Boston — Chicago 1h 38m stop 16:05 — 18:54 UA2278 United Airlines Chicago — Seattle	9h 20m including layover	Find flight from$275
14:00 — 20:19	14:00 — 15:46 UA721 United Airlines Boston — Washington D.C. 1h 33m stop 17:19 — 20:19 UA1730 United Airlines Washington D.C. — Seattle	9h 19m including layover	Find flight from$215
15:10 — 22:45	15:17 — 18:07 UA778 United Airlines Boston — Denver 2h 37m stop 21:04 — 23:09 UA2651 United Airlines Denver — Seattle	10h 35m including layover	Find flight from$319
17:54 — 00:55 +1 day	17:54 — 21:50 UA2400 United Airlines Boston — San Francisco 45m stop 22:35 — 00:55 UA1743 United Airlines San Francisco — Seattle	10h 1m including layover	Find flight from$389
19:59 — 18:10 +1 day	19:59 — 23:35 AS311 Alaska Airlines Boston — Portland 17h 40m stop 17:15 — 18:10 AS2082 Alaska Airlines Portland — Seattle	25h 11m including layover	Find flight from$238
19:59 — 12:41 +1 day	19:59 — 23:13 AS311 Alaska Airlines Boston — Portland 12h 5m stop 11:49 — 12:55 AS970 Alaska Airlines Portland — Seattle	19h 42m including layover	Find flight from$262
06:00 — 23:10	06:00 — 07:33 NK2072 Spirit Airlines Boston — Baltimore 5h 54m stop 13:27 — 15:59 NK1912 Spirit Airlines Baltimore — Los Angeles 4h 23m stop 20:22 — 23:10 NK804 Spirit Airlines Los Angeles — Seattle	20h 10m including layover	Find flight from$194
08:36 — 18:45	08:36 — 10:00 UA515 United Airlines Boston — Newark 1h 30m stop 11:30 — 13:11 UA1875 United Airlines Newark — Chicago 2h 54m stop 16:05 — 18:45 UA2278 United Airlines Chicago — Seattle	13h 9m including layover	Find flight from$281
16:23 — 09:35 +1 day	16:23 — 20:22 AS389 Alaska Airlines Boston — San Diego 1h 37m stop 21:59 — 23:45 AS3458 Alaska Airlines San Diego — San Francisco 7h 35m stop 07:20 — 09:35 AS1013 Alaska Airlines San Francisco — Seattle	20h 12m including layover	Find flight from$237

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

*Departure and arrival times - local. Updated on March 1, 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 05:45 to 19:59 from 4 Boston airports and arrive 05:45 to 19:59 to 3 Seattle airports. Average flight time is 13h 9m.

The fastest flight 8h 44m
Average flight time 13h 9m
The earliest flight 05:45
The latest flight 19:59
Distance 2489 ml

The cheapest months to travel to Seattle are february (from 194 $), november (from 211 $), december (from 268 $).

The most expensive months are january (from 319 $), december (from 268 $), november (from 211 $).

What is the lowest airfare Boston to Seattle?

The cheapest plane ticket found by our users is $194. This airfare is for economy class on one-way NK2072 flight by Spirit Airlines for February 21, 2025 which leaves Logan in Boston at 06:00 am and arrives at Seattle Seattle-Tacoma Intl at 23:10.

Economy class

$194

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Business class

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First class

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Popular Airlines on the Route

The flight Boston — Seattle is served by 3 regular airlines and 1 low-cost airline. Most of the flights on this route are operated by Alaska Airlines - 6 departures per week at the price of from $ 237 . And the most expensive tickets are offered by United Airlines airline - from $ 389.

Direct flights

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

Connecting Flights

There are 25 flights with layovers on the route. The fastest connecting flight is UA1414 by United Airlines takes 8h 44m and the cheapest is NK2072 by Spirit Airlines for $194.

AS - Alaska Airlines

from $237

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UA - United Airlines

from $211

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NK - Spirit Airlines

from $194

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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

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Boston RT128 Rail-ZRU

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Boston South Rail-ZTO

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Logan-BOS

from $194
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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 3 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

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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.
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