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Cheap flights from Boston to Seattle from $98

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Boston to Seattle departing on 12/7. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from Boston to Seattle

Cheap round-trip flights

These are some of the best round-trip flight deals from Boston to Seattle that have been recently found on momondo from popular airlines, departing in the coming months.

Cheap one-way flights

Flying one-way? These are some of the best deals recently discovered on momondo for flights from Boston to Seattle.

Cheap last minute flights

Planning a quick getaway from Boston to Seattle? These are the last-minute flight deals available now.

Cheap direct flights

If you prefer a non-stop journey, check out our latest direct flight deals to Seattle, so you can enjoy a seamless trip without layovers.

Cheap bus & train deals from Boston to Seattle

Find recent round-trip train or bus tickets from Boston to Seattle.

All round-trip flight deals to Seattle

The cheapest plane tickets to Seattle found on KAYAK recently.
7:00 am - 10:37 amBOS-SEA
6h 37mnonstop
3:40 pm - 11:59 pmSEA-BOS
5h 19mnonstop
$194Alaska Airlines
Find Deal
Sat, Dec 7 - Fri, Dec 13
6:29 am - 9:50 amBOS-SEA
6h 21mnonstop
11:00 am - 7:20 pmSEA-BOS
5h 20mnonstop
$197JetBlue
Find Deal
Mon, Dec 9 - Wed, Dec 11
7:00 am - 10:45 amBOS-SEA
6h 45mnonstop
11:28 pm - 8:00 amSEA-BOS
5h 32mnonstop
$198Delta
Find Deal
Sat, Dec 7 - Fri, Dec 13
5:55 pm - 9:34 pmBOS-SEA
6h 39mnonstop
11:30 pm - 7:44 amSEA-BOS
5h 14mnonstop
$202Alaska Airlines
Find Deal
Wed, Feb 12 - Fri, Feb 28
7:00 am - 10:45 amBOS-SEA
6h 45mnonstop
7:35 am - 4:05 pmSEA-BOS
5h 30mnonstop
$208Delta
Find Deal
Sat, Dec 7 - Fri, Dec 13
6:25 am - 2:02 pmBOS-SEA
10h 37m1 stop
5:45 pm - 5:29 amSEA-BOS
8h 44m1 stop
$216American Airlines
Find Deal
Wed, Jan 8 - Sun, Jan 12
5:20 am - 12:41 pmBOS-SEA
10h 21m1 stop
1:35 pm - 11:44 pmSEA-BOS
7h 09m1 stop
$218American Airlines
Find Deal
Wed, Jan 22 - Mon, Jan 27
6:00 am - 12:07 pmBOS-SEA
9h 07m1 stop
7:00 am - 11:59 pmSEA-BOS
13h 59m2 stops
$261United Airlines
Find Deal
Wed, Jan 8 - Mon, Jan 13
6:46 pm - 10:07 pmBOS-SEA
6h 21mnonstop
11:48 pm - 7:59 amSEA-BOS
5h 11mnonstop
$262JetBlue
Find Deal
Thu, Feb 13 - Tue, Feb 25
9:10 am - 6:04 pmBOS-SEA
11h 54m1 stop
11:17 pm - 12:07 pmSEA-BOS
9h 50m1 stop
$276United Airlines
Find Deal
Mon, Jan 6 - Sun, Jan 12
7:00 am - 10:37 amBOS-SEA
6h 37mnonstop
$98Alaska Airlines
Find Deal
Sat, Dec 7
7:05 pm - 10:25 pmBOS-SEA
6h 20mnonstop
$99Delta
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Wed, Feb 19
7:54 pm - 11:31 pmBOS-SEA
6h 37mnonstop
$104Alaska Airlines
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Fri, Dec 6
4:58 pm - 11:59 pmBOS-SEA
10h 01m1 stop
$108American Airlines
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Fri, Dec 6
5:55 am - 3:21 pmBOS-SEA
12h 26m1 stop
$113United Airlines
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Sun, Dec 15
7:20 am - 2:56 pmBOS-SEA
10h 36m1 stop
$128American Airlines
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Mon, Jan 20
7:00 am - 10:45 amBOS-SEA
6h 45mnonstop
$129Delta
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Mon, Dec 16
2:45 pm - 11:09 pmBOS-SEA
11h 24m2 stops
$133United Airlines
Find Deal
Wed, Jan 8
3:30 pm - 9:29 pmBOS-SEA
8h 59m1 stop
$173JetBlue
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Sun, May 11
6:46 pm - 10:07 pmBOS-SEA
6h 21mnonstop
$189JetBlue
Find Deal
Sat, Feb 15
7:00 am - 10:25 amBOS-SEA
6h 25mnonstop
11:05 am - 7:15 pmSEA-BOS
5h 10mnonstop
$217JetBlue
Find Deal
Mon, Nov 25 - Thu, Dec 5
7:07 am - 2:42 pmBOS-SEA
10h 35m1 stop
3:40 pm - 11:59 pmSEA-BOS
5h 19mnonstop
$281Alaska Airlines
Find Deal
Mon, Nov 25 - Thu, Dec 5
7:00 am - 10:25 amBOS-SEA
6h 25mnonstop
11:05 am - 7:15 pmSEA-BOS
5h 10mnonstop
$282JetBlue
Find Deal
Mon, Nov 25 - Wed, Dec 4
7:59 pm - 5:59 amBOS-SEA
13h 00m1 stop
4:31 pm - 12:59 amSEA-BOS
5h 28mnonstop
$326Alaska Airlines
Find Deal
Thu, Nov 21 - Mon, Nov 25
7:00 am - 10:45 amBOS-SEA
6h 45mnonstop
7:30 am - 4:02 pmSEA-BOS
5h 32mnonstop
$327Delta
Find Deal
Fri, Nov 22 - Thu, Dec 5
8:53 am - 5:10 pmBOS-SEA
11h 17m1 stop
11:06 pm - 10:20 amSEA-BOS
8h 14m1 stop
$336American Airlines
Find Deal
Sat, Nov 23 - Wed, Dec 4
6:41 am - 12:59 pmBOS-SEA
9h 18m1 stop
1:59 pm - 12:34 amSEA-BOS
7h 35m1 stop
$356American Airlines
Find Deal
Sun, Nov 24 - Tue, Nov 26
6:40 pm - 10:25 pmBOS-SEA
6h 45mnonstop
11:29 pm - 7:55 amSEA-BOS
5h 26mnonstop
$372Delta
Find Deal
Sat, Nov 23 - Tue, Nov 26
5:45 am - 11:35 amBOS-SEA
8h 50m1 stop
5:00 am - 3:45 pmSEA-BOS
7h 45m1 stop
$401United Airlines
Find Deal
Mon, Nov 25 - Wed, Dec 4
6:00 am - 12:53 pmBOS-SEA
9h 53m1 stop
11:55 pm - 12:45 pmSEA-BOS
9h 50m1 stop
$441United Airlines
Find Deal
Fri, Nov 22 - Wed, Dec 4
7:00 am - 10:37 amBOS-SEA
6h 37mnonstop
3:40 pm - 11:59 pmSEA-BOS
5h 19mnonstop
$194Alaska Airlines
Find Deal
Sat, Dec 7 - Fri, Dec 13
7:54 pm - 11:31 pmBOS-SEA
6h 37mnonstop
7:00 am - 3:13 pmSEA-BOS
5h 13mnonstop
$197Alaska Airlines
Find Deal
Mon, Dec 9 - Mon, Dec 16
7:00 am - 10:45 amBOS-SEA
6h 45mnonstop
11:28 pm - 8:00 amSEA-BOS
5h 32mnonstop
$198Delta
Find Deal
Sat, Dec 7 - Fri, Dec 13
5:55 pm - 9:34 pmBOS-SEA
6h 39mnonstop
11:30 pm - 7:44 amSEA-BOS
5h 14mnonstop
$202Alaska Airlines
Find Deal
Wed, Feb 12 - Fri, Feb 28
7:54 pm - 11:31 pmBOS-SEA
6h 37mnonstop
7:00 am - 3:13 pmSEA-BOS
5h 13mnonstop
$207Alaska Airlines
Find Deal
Fri, Dec 6 - Wed, Dec 11
7:00 am - 10:45 amBOS-SEA
6h 45mnonstop
7:35 am - 4:05 pmSEA-BOS
5h 30mnonstop
$208Delta
Find Deal
Sat, Dec 7 - Fri, Dec 13
7:00 am - 10:45 amBOS-SEA
6h 45mnonstop
7:35 am - 4:05 pmSEA-BOS
5h 30mnonstop
$217Delta
Find Deal
Thu, Dec 12 - Tue, Dec 17
6:46 pm - 10:07 pmBOS-SEA
6h 21mnonstop
11:48 pm - 7:59 amSEA-BOS
5h 11mnonstop
$262JetBlue
Find Deal
Thu, Feb 13 - Wed, Feb 26
6:46 pm - 10:07 pmBOS-SEA
6h 21mnonstop
11:17 pm - 7:30 amSEA-BOS
5h 13mnonstop
$282JetBlue
Find Deal
Thu, Feb 13 - Sun, Feb 23
11:00 am - 2:23 pmBOS-SEA
6h 23mnonstop
3:35 pm - 11:59 pmSEA-BOS
5h 24mnonstop
$627American Airlines
Find Deal
Mon, Apr 21 - Fri, Apr 25

Alaska Airlines flights from Boston to Seattle

Our best Alaska Airlines deals on Boston to Seattle flight tickets
Alaska Airlines
Dec 7
BOS7:00 amBoston Logan Intl
6h 37m
SEA10:37 amSeattle/Tacoma Intl
Dec 13
SEA3:40 pmSeattle/Tacoma Intl
5h 19m
BOS11:59 pmBoston Logan Intl
Alaska Airlines
Feb 12
BOS5:55 pmBoston Logan Intl
6h 39m
SEA9:34 pmSeattle/Tacoma Intl
Feb 28
SEA11:30 pmSeattle/Tacoma Intl
5h 14m
BOS7:44 amBoston Logan Intl
Alaska Airlines
Dec 9
BOS7:59 pmBoston Logan Intl
13h 04m
1 stop
SEA6:03 amSeattle/Tacoma Intl
Dec 11
SEA3:40 pmSeattle/Tacoma Intl
5h 19m
BOS11:59 pmBoston Logan Intl

JetBlue flights from Boston to Seattle

Our best JetBlue deals on Boston to Seattle flight tickets
JetBlue
Dec 9
BOS6:29 amBoston Logan Intl
6h 21m
SEA9:50 amSeattle/Tacoma Intl
Dec 11
SEA11:00 amSeattle/Tacoma Intl
5h 20m
BOS7:20 pmBoston Logan Intl
JetBlue
Nov 28
BOS7:00 amBoston Logan Intl
6h 25m
SEA10:25 amSeattle/Tacoma Intl
Dec 5
SEA11:05 amSeattle/Tacoma Intl
5h 10m
BOS7:15 pmBoston Logan Intl
JetBlue
Feb 13
BOS6:46 pmBoston Logan Intl
6h 21m
SEA10:07 pmSeattle/Tacoma Intl
Feb 25
SEA11:48 pmSeattle/Tacoma Intl
5h 11m
BOS7:59 amBoston Logan Intl

See travel insights to Seattle from

How to get the cheapest flight ticket from Boston to Seattle

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly from Boston to Seattle?

January. The cheapest time of year to fly to Seattle from Boston is January. Most expensive is July

What is the cheapest day to depart Boston for Seattle?

Friday. The cheapest day of the week is typically Friday. The most expensive is typically Sunday

When is the cheapest time to fly from Boston to Seattle?

In the evening. Boston to Seattle flights are approximately 30% more expensive in the morning than in the evening

What is the cheapest Boston to Seattle flight route?

Boston Logan Intl - Seattle/Tacoma Intl. Fly from Boston Logan Intl to Seattle/Tacoma Intl for the best Boston - Seattle flight prices

How far in advance should you book Boston to Seattle flights?

38 days before. The cheapest time to buy a flight from Boston to Seattle is approximately 38 days to departure

What cabin class options are available on Boston to Seattle flights?

There are 4 cabin classes available to choose from on Boston to Seattle flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Boston to Seattle flights?

No. A direct flight is the cheapest option for a flight between Boston to Seattle.

How have Boston to Seattle flight prices changed over time?

As of November 2024, prices for Boston to Seattle flights are approximately 24% cheaper when compared to flights at the same time last year.

What is the typical price of a round-trip flight between Boston and Seattle?


When to book flights from Boston to Seattle

Are you open to changing your travel dates? Check out the ideal times to fly from Boston to Seattle according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Boston to Seattle (BOS to SEA) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Boston to Seattle

Best Price Found

$98

Fastest flight time

6h 20m

Direct flights

Every day

Airports in Seattle

1 airport
The best one-way flight to Seattle from Boston in the past 72 hours is $98. The best round-trip flight deal from Boston to Seattle found on momondo in the last 72 hours is $194.
The fastest flight from Boston to Seattle takes 6h 20m
Direct flights go from Boston to Seattle every day.
There is 1 airport near Seattle: Seattle/Tacoma Intl (SEA)

  • How far is Boston Logan Intl to Seattle/Tacoma Intl by plane?

    The straight-line distance from Boston Logan Intl to Seattle/Tacoma Intl is 2484.0 mi. Flights usually cover this in 6h 21m, depending on flying conditions and air traffic around both airports.

  • When did momondo last update prices for flights from Boston Logan Intl Airport to Seattle/Tacoma Intl Airport?

    Prices for flights from Boston Logan Intl Airport to Seattle/Tacoma Intl Airport are updated daily.

  • How many operators does momondo search for flights from Boston Logan Intl Airport to Seattle/Tacoma Intl Airport?

  • How old do you have to be to fly from Boston Logan Intl Airport to Seattle/Tacoma Intl Airport?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Boston Logan Intl Airport to Seattle/Tacoma Intl Airport.

  • What documentation or ID do you need to fly to Seattle/Tacoma Intl Airport?

    The travel and health documents you'll need for your trip to Seattle/Tacoma Intl Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Seattle/Tacoma Intl Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular plane model from Boston to Seattle?

  • What is the most popular airline from Boston to Seattle?


Best airlines flying from Boston to Seattle

Compare and see reviews for airlines that fly from Boston to Seattle with momondo
Airline
Rating
Free Cancellation
Price
JetBluePriceFrom $136Free CancellationRating
7.4
3,394 reviews
Search JetBlue flights
DeltaPriceFrom $170Free CancellationRating
8.0
8,756 reviews
Search Delta flights
Sun Country AirPriceFrom $176Free CancellationRating
7.0
415 reviews
Search Sun Country Air flights
Alaska AirlinesPriceFrom $182Free CancellationRating
8.0
9,461 reviews
Search Alaska Airlines flights
Spirit AirlinesPriceFrom $187Free CancellationRating
6.3
8,174 reviews
Search Spirit Airlines flights
American AirlinesPriceFrom $204Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
United AirlinesPriceFrom $238Free CancellationRating
7.4
9,171 reviews
Search United Airlines flights
  • Delta Flights From Boston to Seattle

    Delta flies from Boston to Seattle around 14 times per week, with 8,756 momondo users rating the airline 8.0/10. The cheapest Delta deal from Boston to Seattle in the last 72 hours was $170 (round-trip), much lower than the average airfare cost of $406 for Delta flights on this route.

  • Alaska Airlines Flights From Boston to Seattle

    The best Alaska Airlines deal for Boston to Seattle flight tickets found on momondo in the last 72 hours was $182, round-trip. It should be noted that an average Alaska Airlines flight deal for this route in this time was higher, at $445 round-trip. Alaska Airlines operates 3 flights out of Boston into Seattle in an average week, so prices vary by time and availability. 9,461 Alaska Airlines reviews by users on momondo have scored the airline at 8.0/10.


Why use momondo?

Why should I use momondo to find a flight deal from Boston to Seattle?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Boston to Seattle. momondo saves you time and could save you money on your trip.

Can I find flights from Boston to Seattle with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Boston to Seattle flights to just show those with flexible booking policies.

How can momondo help me find flights from Boston to Seattle?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Seattle from Boston.

I’m not ready to book a flight from Boston to Seattle right now. Can momondo alert me if prices change?

If you are simply researching potential flights to Seattle, momondo offers a useful price alert feature which will track prices for flights to Seattle from Boston and alert you when they change.


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