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Cheap flights from Seattle to Boston from $109

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Seattle to Boston departing on 12/13. 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 Seattle to Boston

Cheap round-trip flights

These are some of the best round-trip flight deals from Seattle to Boston 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 Seattle to Boston.

Cheap last minute flights

Planning a quick getaway from Seattle to Boston? 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 Boston, so you can enjoy a seamless trip without layovers.

Cheap bus & train deals from Seattle to Boston

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

All round-trip flight deals to Boston

The cheapest plane tickets to Boston found on KAYAK recently.
3:45 pm - 11:59 pmSEA-BOS
5h 14mnonstop
7:00 am - 10:38 amBOS-SEA
6h 38mnonstop
$205Alaska Airlines
Find Deal
Fri, Jan 10 - Mon, Jan 13
3:45 pm - 11:59 pmSEA-BOS
5h 14mnonstop
7:00 am - 10:38 amBOS-SEA
6h 38mnonstop
$213Alaska Airlines
Find Deal
Fri, Jan 10 - Fri, Jan 17
3:20 pm - 11:30 pmSEA-BOS
5h 10mnonstop
10:45 am - 2:10 pmBOS-SEA
6h 25mnonstop
$217JetBlue
Find Deal
Tue, Jan 21 - Mon, Jan 27
11:48 pm - 7:59 amSEA-BOS
5h 11mnonstop
7:19 pm - 10:38 pmBOS-SEA
6h 19mnonstop
$237JetBlue
Find Deal
Tue, Feb 25 - Fri, Feb 28
7:11 am - 7:22 pmSEA-BOS
9h 11m1 stop
5:20 am - 2:56 pmBOS-SEA
12h 36m1 stop
$238American Airlines
Find Deal
Fri, Jan 10 - Mon, Jan 13
5:45 pm - 5:29 amSEA-BOS
8h 44m1 stop
2:28 pm - 9:21 pmBOS-SEA
9h 53m1 stop
$239American Airlines
Find Deal
Fri, Jan 10 - Fri, Jan 17
11:59 pm - 10:56 amSEA-BOS
7h 57m1 stop
2:45 pm - 10:53 pmBOS-SEA
11h 08m2 stops
$241United Airlines
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Wed, Jan 8 - Wed, Jan 22
3:55 pm - 12:20 amSEA-BOS
5h 25mnonstop
7:00 am - 10:45 amBOS-SEA
6h 45mnonstop
$257Delta
Find Deal
Sun, Dec 8 - Thu, Dec 12
6:00 pm - 5:56 amSEA-BOS
8h 56m1 stop
3:35 pm - 10:00 pmBOS-SEA
9h 25m1 stop
$268United Airlines
Find Deal
Fri, Jan 17 - Mon, Jan 20
11:35 pm - 8:02 amSEA-BOS
5h 27mnonstop
7:05 pm - 10:25 pmBOS-SEA
6h 20mnonstop
$272Delta
Find Deal
Thu, Dec 26 - Wed, Jan 8
3:40 pm - 11:59 pmSEA-BOS
5h 19mnonstop
$109Alaska Airlines
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Fri, Dec 13
6:35 am - 6:54 pmSEA-BOS
9h 19m1 stop
$117Alaska Airlines
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Thu, Dec 12
9:25 am - 10:08 pmSEA-BOS
9h 43m1 stop
$118United Airlines
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Wed, Dec 4
5:00 am - 5:16 pmSEA-BOS
9h 16m2 stops
$123United Airlines
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Sat, Dec 7
10:29 pm - 6:55 amSEA-BOS
5h 26mnonstop
$139Delta
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Mon, Jan 6
3:35 pm - 9:03 amSEA-BOS
14h 28m1 stop
$147Delta
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Fri, Jan 10
12:31 am - 11:26 amSEA-BOS
7h 55m1 stop
$148American Airlines
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Sun, Jan 5
11:05 am - 7:15 pmSEA-BOS
5h 10mnonstop
$150JetBlue
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Wed, Dec 4
12:15 am - 10:28 amSEA-BOS
7h 13m1 stop
$151American Airlines
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Tue, Dec 10
11:00 am - 7:20 pmSEA-BOS
5h 20mnonstop
$164JetBlue
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Wed, Dec 11
11:35 am - 7:45 pmSEA-BOS
5h 10mnonstop
6:29 am - 9:50 amBOS-SEA
6h 21mnonstop
$327JetBlue
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Fri, Nov 29 - Sun, Dec 15
5:10 pm - 6:23 amSEA-BOS
10h 13m1 stop
7:00 am - 10:45 amBOS-SEA
6h 45mnonstop
$377Delta
Find Deal
Fri, Nov 29 - Sun, Dec 15
12:55 am - 11:00 amSEA-BOS
7h 05m1 stop
7:00 am - 10:45 amBOS-SEA
6h 45mnonstop
$417Delta
Find Deal
Thu, Nov 28 - Mon, Dec 16
6:34 am - 3:00 pmSEA-BOS
5h 26mnonstop
7:00 am - 10:37 amBOS-SEA
6h 37mnonstop
$427Alaska Airlines
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Thu, Nov 28 - Sun, Dec 15
5:36 am - 7:28 pmSEA-BOS
10h 52m1 stop
6:00 pm - 12:50 amBOS-SEA
9h 50m1 stop
$446United Airlines
Find Deal
Fri, Nov 29 - Wed, Dec 4
5:36 am - 9:35 pmSEA-BOS
12h 59m2 stops
6:00 pm - 12:50 amBOS-SEA
9h 50m1 stop
$451United Airlines
Find Deal
Fri, Nov 29 - Wed, Dec 4
11:35 am - 7:45 pmSEA-BOS
5h 10mnonstop
6:29 am - 9:50 amBOS-SEA
6h 21mnonstop
$467JetBlue
Find Deal
Thu, Nov 28 - Mon, Dec 16
6:34 am - 3:00 pmSEA-BOS
5h 26mnonstop
7:00 am - 10:37 amBOS-SEA
6h 37mnonstop
$507Alaska Airlines
Find Deal
Thu, Nov 28 - Mon, Dec 16
8:36 am - 8:23 pmSEA-BOS
8h 47m1 stop
4:13 pm - 10:05 pmBOS-SEA
8h 52m1 stop
$556American Airlines
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Thu, Nov 28 - Fri, Nov 29
11:06 pm - 12:20 pmSEA-BOS
10h 14m1 stop
6:30 am - 12:43 pmBOS-SEA
9h 13m1 stop
$557American Airlines
Find Deal
Sun, Dec 1 - Wed, Dec 11
3:45 pm - 11:59 pmSEA-BOS
5h 14mnonstop
7:00 am - 10:38 amBOS-SEA
6h 38mnonstop
$205Alaska Airlines
Find Deal
Fri, Jan 10 - Mon, Jan 13
3:45 pm - 11:59 pmSEA-BOS
5h 14mnonstop
7:00 am - 10:38 amBOS-SEA
6h 38mnonstop
$213Alaska Airlines
Find Deal
Fri, Jan 10 - Fri, Jan 17
3:45 pm - 11:59 pmSEA-BOS
5h 14mnonstop
5:55 pm - 9:34 pmBOS-SEA
6h 39mnonstop
$214Alaska Airlines
Find Deal
Sun, Jan 12 - Thu, Jan 16
11:00 am - 7:20 pmSEA-BOS
5h 20mnonstop
6:29 am - 9:50 amBOS-SEA
6h 21mnonstop
$215JetBlue
Find Deal
Thu, Dec 12 - Mon, Dec 16
10:29 pm - 6:55 amSEA-BOS
5h 26mnonstop
7:05 pm - 10:25 pmBOS-SEA
6h 20mnonstop
$217Delta
Find Deal
Tue, Jan 21 - Mon, Jan 27
11:48 pm - 7:59 amSEA-BOS
5h 11mnonstop
7:19 pm - 10:38 pmBOS-SEA
6h 19mnonstop
$237JetBlue
Find Deal
Tue, Feb 25 - Fri, Feb 28
10:29 pm - 6:55 amSEA-BOS
5h 26mnonstop
7:10 am - 10:45 amBOS-SEA
6h 35mnonstop
$247Delta
Find Deal
Mon, Jan 6 - Sat, Jan 11
11:28 pm - 8:00 amSEA-BOS
5h 32mnonstop
6:40 pm - 10:15 pmBOS-SEA
6h 35mnonstop
$257Delta
Find Deal
Sun, Dec 8 - Fri, Dec 13
11:35 pm - 8:02 amSEA-BOS
5h 27mnonstop
7:05 pm - 10:25 pmBOS-SEA
6h 20mnonstop
$272Delta
Find Deal
Thu, Dec 26 - Wed, Jan 8
11:17 pm - 7:30 amSEA-BOS
5h 13mnonstop
6:46 pm - 10:07 pmBOS-SEA
6h 21mnonstop
$277JetBlue
Find Deal
Sun, Feb 16 - Thu, Feb 20

Alaska Airlines flights from Seattle to Boston

Our best Alaska Airlines deals on Seattle to Boston flight tickets
Alaska Airlines
Jan 10
SEA3:45 pmSeattle/Tacoma Intl
5h 14m
BOS11:59 pmBoston Logan Intl
Jan 13
BOS7:00 amBoston Logan Intl
6h 38m
SEA10:38 amSeattle/Tacoma Intl
Alaska Airlines
Jan 10
SEA3:45 pmSeattle/Tacoma Intl
5h 14m
BOS11:59 pmBoston Logan Intl
Jan 17
BOS7:00 amBoston Logan Intl
6h 38m
SEA10:38 amSeattle/Tacoma Intl
Alaska Airlines
Jan 10
SEA3:45 pmSeattle/Tacoma Intl
5h 14m
BOS11:59 pmBoston Logan Intl
Jan 17
BOS5:55 pmBoston Logan Intl
6h 39m
SEA9:34 pmSeattle/Tacoma Intl

American Airlines flights from Seattle to Boston

Our best American Airlines deals on Seattle to Boston flight tickets
American Airlines
Dec 4
SEA12:15 amSeattle/Tacoma Intl
8h 12m
1 stop
BOS11:27 amBoston Logan Intl
Dec 11
BOS5:29 amBoston Logan Intl
12h 44m
1 stop
SEA3:13 pmSeattle/Tacoma Intl
American Airlines
Dec 4
SEA12:15 amSeattle/Tacoma Intl
8h 12m
1 stop
BOS11:27 amBoston Logan Intl
Dec 11
BOS5:17 amBoston Logan Intl
10h 29m
1 stop
SEA12:46 pmSeattle/Tacoma Intl
American Airlines
Jan 10
SEA7:11 amSeattle/Tacoma Intl
9h 11m
1 stop
BOS7:22 pmBoston Logan Intl
Jan 13
BOS5:20 amBoston Logan Intl
12h 36m
1 stop
SEA2:56 pmSeattle/Tacoma Intl

See travel insights to Boston from

How to get the cheapest flight ticket from Seattle to Boston

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

What is the cheapest month to fly to Boston?

In general, January is the cheapest month to fly from Seattle to Boston. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $228. If you aren’t able to travel during the month of January, then book flights to Boston from Seattle during February instead. Flights to Boston in February, while not as cheap as those in January, still average around $236.

What is the cheapest day to depart on your flight to Boston?

The cheapest day to depart from Seattle to Boston is on a Wednesday when prices can be found for as low as $368. Be sure to avoid booking your departure on a Sunday as prices are generally higher than usual. According to our data, the average ticket price to Boston on Sunday is $486.

What is the cheapest time of day to depart on your flight to Boston?

According to our data, the cheapest time of day to fly to Boston is in the afternoon. momondo users have found flights departing from Seattle to Boston in the afternoon for as low as $356. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. In the morning is when there is more demand to fly to Boston, so prices are often more expensive at around $448 per ticket.

What is the cheapest Seattle/Tacoma Intl to Boston Logan Intl flight route?

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

How far in advance should I book a flight to Boston?

You are more likely to see cheaper flights to Boston from Seattle when booking 38 days ahead of your departure date. In general, you can expect to find flights to Boston for around $371 when searching 38 days out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Boston from Seattle for as low as $297 on momondo.

What cabin class options are available on Seattle/Tacoma Intl to Boston Logan Intl flights?

There are 4 cabin classes available to choose from on Seattle/Tacoma Intl to Boston Logan Intl 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 Seattle to Boston flights?

You could potentially save up to 7% on your flight if you consider stops on a Seattle to Boston flight.

How have Seattle to Boston flight prices changed over time?

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

When to book flights from Seattle to Boston

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

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

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

Best Price Found

$109

Fastest flight time

5h 07m

Direct flights

Every day

Airports in Boston

1 airport
The best one-way flight to Boston from Seattle in the past 72 hours is $109. The best round-trip flight deal from Seattle to Boston found on momondo in the last 72 hours is $205.
The fastest flight from Seattle to Boston takes 5h 07m
Direct flights go from Seattle to Boston every day.
There is 1 airport near Boston: Boston Logan Intl (BOS)

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

    Boston Logan Intl is 2484.0 mi away from Seattle/Tacoma Intl. A reasonable flight in good conditions will take 5h 07m.

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

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

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

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

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Seattle/Tacoma Intl Airport to Boston Logan Intl Airport.

  • What documentation or ID do you need to fly to Boston Logan Intl Airport?

    The travel and health documents required for your trip to Boston Logan Intl Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Boston Logan Intl Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

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

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


Best airlines flying from Seattle to Boston

Compare and see reviews for airlines that fly from Seattle to Boston with momondo
Airline
Rating
Free Cancellation
Price
JetBluePriceFrom $136Free CancellationRating
7.4
3,362 reviews
Search JetBlue flights
Spirit AirlinesPriceFrom $145Free CancellationRating
6.3
8,172 reviews
Search Spirit Airlines flights
DeltaPriceFrom $171Free CancellationRating
8.0
8,730 reviews
Search Delta flights
Sun Country AirPriceFrom $176Free CancellationRating
7.0
413 reviews
Search Sun Country Air flights
Alaska AirlinesPriceFrom $203Free CancellationRating
8.0
9,481 reviews
Search Alaska Airlines flights
American AirlinesPriceFrom $242Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
United AirlinesPriceFrom $249Free CancellationRating
7.4
9,146 reviews
Search United Airlines flights
  • Delta Flights From Seattle to Boston

    The lowest priced Delta flight from Seattle to Boston from the last 72 hours was $171. Generally, Delta has 16 flights on this route every week with an average price of $407. Delta is rated 8.0/10 by our users.

  • Alaska Airlines Flights From Seattle to Boston

    The best Alaska Airlines deal for Seattle to Boston flight tickets found on momondo in the last 72 hours was $203, round-trip. It should be noted that an average Alaska Airlines flight deal for this route in this time was higher, at $464 round-trip. Alaska Airlines operates 12 flights out of Seattle into Boston in an average week, so prices vary by time and availability. 9,481 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 Seattle to Boston?

It is quick and easy to find Seattle to Boston flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Boston that suits you.

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

All flight searches from Seattle to Boston on momondo can be filtered to show those which offer flexible booking policies.

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

momondo helps you find the best flight between Seattle and Boston by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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

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


An easier way to manage your Boston trip

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