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Cheap flights from Seattle to Boston 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 Seattle to Boston departing on 1/30. 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.
7:30 am - 3:59 pmSEA-BOS
5h 29mnonstop
7:10 am - 10:45 amBOS-SEA
6h 35mnonstop
$197Delta
Find Deal
Fri, Jan 17 - Mon, Jan 20
9:59 pm - 3:29 pmSEA-BOS
14h 30m1 stop
7:00 am - 10:38 amBOS-SEA
6h 38mnonstop
$206Alaska Airlines
Find Deal
Thu, Feb 6 - Sat, Feb 8
8:26 am - 4:55 pmSEA-BOS
5h 29mnonstop
5:55 pm - 9:34 pmBOS-SEA
6h 39mnonstop
$211Alaska Airlines
Find Deal
Sat, Feb 1 - Sat, Feb 1
11:40 am - 11:53 pmSEA-BOS
9h 13m1 stop
2:40 pm - 9:18 pmBOS-SEA
9h 38m1 stop
$217American Airlines
Find Deal
Thu, Jan 9 - Sat, Jan 18
10:29 pm - 6:55 amSEA-BOS
5h 26mnonstop
7:05 pm - 10:25 pmBOS-SEA
6h 20mnonstop
$227Delta
Find Deal
Sun, Jan 12 - Sat, Jan 18
5:45 pm - 5:29 amSEA-BOS
8h 44m1 stop
2:40 pm - 9:18 pmBOS-SEA
9h 38m1 stop
$236American Airlines
Find Deal
Tue, Jan 7 - Thu, Jan 9
10:40 pm - 7:05 amSEA-BOS
5h 25mnonstop
6:36 am - 9:50 amBOS-SEA
6h 14mnonstop
$257JetBlue
Find Deal
Tue, Apr 29 - Thu, May 8
5:00 am - 5:23 pmSEA-BOS
9h 23m2 stops
8:00 am - 3:45 pmBOS-SEA
10h 45m1 stop
$261United Airlines
Find Deal
Sat, Jan 11 - Thu, Jan 16
11:00 am - 7:24 pmSEA-BOS
5h 24mnonstop
3:30 pm - 9:29 pmBOS-SEA
8h 59m1 stop
$266JetBlue
Find Deal
Wed, Apr 30 - Thu, May 8
8:00 am - 7:00 pmSEA-BOS
8h 00m1 stop
5:54 pm - 12:55 amBOS-SEA
10h 01m1 stop
$356United Airlines
Find Deal
Sat, Feb 8 - Sat, Feb 15
3:20 pm - 11:30 pmSEA-BOS
5h 10mnonstop
$98JetBlue
Find Deal
Thu, Jan 30
7:30 am - 3:59 pmSEA-BOS
5h 29mnonstop
$99Delta
Find Deal
Sat, Jan 25
10:18 pm - 9:34 amSEA-BOS
8h 16m1 stop
$108American Airlines
Find Deal
Sat, Jan 25
10:18 pm - 11:02 amSEA-BOS
9h 44m1 stop
$109American Airlines
Find Deal
Thu, Jan 30
11:30 pm - 7:44 amSEA-BOS
5h 14mnonstop
$119Alaska Airlines
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Thu, Feb 20
11:20 pm - 9:50 amSEA-BOS
7h 30m1 stop
$128United Airlines
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Mon, Feb 24
10:29 pm - 6:55 amSEA-BOS
5h 26mnonstop
$129Delta
Find Deal
Mon, Jan 20
11:19 pm - 7:29 amSEA-BOS
5h 10mnonstop
$139JetBlue
Find Deal
Thu, May 8
11:45 am - 11:44 pmSEA-BOS
8h 59m1 stop
$158Alaska Airlines
Find Deal
Fri, Jan 24
7:00 am - 9:43 pmSEA-BOS
11h 43m1 stop
$178United Airlines
Find Deal
Wed, Jan 22
7:10 pm - 5:57 amSEA-BOS
7h 47m1 stop
4:53 pm - 11:17 pmBOS-SEA
9h 24m1 stop
$371United Airlines
Find Deal
Mon, Dec 30 - Mon, Jan 6
9:10 pm - 5:30 amSEA-BOS
5h 20mnonstop
6:59 pm - 8:18 amBOS-SEA
16h 19m1 stop
$386Alaska Airlines
Find Deal
Mon, Dec 30 - Wed, Jan 1
1:50 pm - 9:57 pmSEA-BOS
5h 07mnonstop
9:16 am - 12:38 pmBOS-SEA
6h 22mnonstop
$407JetBlue
Find Deal
Sat, Dec 28 - Fri, Jan 3
9:20 pm - 5:40 amSEA-BOS
5h 20mnonstop
6:59 pm - 8:18 amBOS-SEA
16h 19m1 stop
$416Alaska Airlines
Find Deal
Fri, Dec 27 - Wed, Jan 1
12:31 am - 10:54 amSEA-BOS
7h 23m1 stop
6:00 pm - 12:57 amBOS-SEA
9h 57m1 stop
$426American Airlines
Find Deal
Fri, Dec 27 - Fri, Jan 3
11:35 pm - 8:02 amSEA-BOS
5h 27mnonstop
7:05 pm - 10:25 pmBOS-SEA
6h 20mnonstop
$447Delta
Find Deal
Mon, Dec 30 - Mon, Jan 6
7:40 am - 4:12 pmSEA-BOS
5h 32mnonstop
6:50 pm - 10:25 pmBOS-SEA
6h 35mnonstop
$457Delta
Find Deal
Fri, Dec 27 - Tue, Dec 31
12:31 am - 11:26 amSEA-BOS
7h 55m1 stop
6:00 pm - 1:09 amBOS-SEA
10h 09m1 stop
$486American Airlines
Find Deal
Thu, Dec 26 - Thu, Jan 2
2:16 pm - 12:34 pmSEA-BOS
19h 18m2 stops
6:21 pm - 12:10 amBOS-SEA
32h 49m3 stops
$539Spirit Airlines
Find Deal
Mon, Dec 30 - Mon, Jan 6
6:11 am - 8:25 amSEA-BOS
23h 14m3 stops
2:27 pm - 1:11 pmBOS-SEA
25h 44m2 stops
$756Spirit Airlines
Find Deal
Sat, Dec 28 - Fri, Jan 3
3:20 pm - 11:30 pmSEA-BOS
5h 10mnonstop
10:45 am - 2:10 pmBOS-SEA
6h 25mnonstop
$197JetBlue
Find Deal
Fri, Jan 17 - Sun, Jan 19
8:26 am - 4:55 pmSEA-BOS
5h 29mnonstop
5:55 pm - 9:34 pmBOS-SEA
6h 39mnonstop
$211Alaska Airlines
Find Deal
Sat, Feb 1 - Sat, Feb 1
3:20 pm - 11:30 pmSEA-BOS
5h 10mnonstop
10:45 am - 2:10 pmBOS-SEA
6h 25mnonstop
$217JetBlue
Find Deal
Sat, Jan 11 - Thu, Jan 16
8:26 am - 4:55 pmSEA-BOS
5h 29mnonstop
5:55 pm - 9:34 pmBOS-SEA
6h 39mnonstop
$221Alaska Airlines
Find Deal
Thu, Feb 6 - Thu, Feb 6
10:29 pm - 6:55 amSEA-BOS
5h 26mnonstop
7:05 pm - 10:25 pmBOS-SEA
6h 20mnonstop
$227Delta
Find Deal
Sun, Jan 12 - Sat, Jan 18
10:40 pm - 7:05 amSEA-BOS
5h 25mnonstop
6:36 am - 9:50 amBOS-SEA
6h 14mnonstop
$237JetBlue
Find Deal
Tue, Apr 29 - Tue, May 13
7:30 am - 3:59 pmSEA-BOS
5h 29mnonstop
7:10 am - 10:45 amBOS-SEA
6h 35mnonstop
$247Delta
Find Deal
Tue, Jan 7 - Thu, Jan 9
8:26 am - 4:55 pmSEA-BOS
5h 29mnonstop
5:55 pm - 9:34 pmBOS-SEA
6h 39mnonstop
$251Alaska Airlines
Find Deal
Thu, Feb 6 - Thu, Feb 6
3:30 pm - 11:59 pmSEA-BOS
5h 29mnonstop
7:10 am - 10:39 amBOS-SEA
6h 29mnonstop
$347Delta
Find Deal
Sun, Apr 20 - Wed, Apr 23
10:00 pm - 6:30 amSEA-BOS
5h 30mnonstop
6:15 pm - 9:37 pmBOS-SEA
6h 22mnonstop
$357Delta
Find Deal
Sat, Mar 22 - Sat, Apr 5

Delta flights from Seattle to Boston

Our best Delta deals on Seattle to Boston flight tickets
Delta
Jan 17
SEA7:30 amSeattle/Tacoma Intl
5h 29m
BOS3:59 pmBoston Logan Intl
Jan 20
BOS7:10 amBoston Logan Intl
6h 35m
SEA10:45 amSeattle/Tacoma Intl
Delta
Jan 12
SEA10:29 pmSeattle/Tacoma Intl
5h 26m
BOS6:55 amBoston Logan Intl
Jan 18
BOS7:05 pmBoston Logan Intl
6h 20m
SEA10:25 pmSeattle/Tacoma Intl
Delta
Apr 29
SEA10:00 pmSeattle/Tacoma Intl
5h 36m
BOS6:36 amBoston Logan Intl
May 7
BOS7:10 amBoston Logan Intl
6h 29m
SEA10:39 amSeattle/Tacoma Intl

Alaska Airlines flights from Seattle to Boston

Our best Alaska Airlines deals on Seattle to Boston flight tickets
Alaska Airlines
Feb 6
SEA9:59 pmSeattle/Tacoma Intl
14h 30m
1 stop
BOS3:29 pmBoston Logan Intl
Feb 8
BOS7:00 amBoston Logan Intl
6h 38m
SEA10:38 amSeattle/Tacoma Intl
Alaska Airlines
Feb 1
SEA8:26 amSeattle/Tacoma Intl
5h 29m
BOS4:55 pmBoston Logan Intl
Feb 1
BOS5:55 pmBoston Logan Intl
6h 39m
SEA9:34 pmSeattle/Tacoma Intl
Alaska Airlines
Jan 22
SEA10:51 pmSeattle/Tacoma Intl
13h 38m
1 stop
BOS3:29 pmBoston Logan Intl
Jan 29
BOS5:24 pmBoston Logan Intl
19h 06m
1 stop
SEA9:30 amSeattle/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 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 $217. 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 $362. 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 $489.

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. At noon is when there is more demand to fly to Boston, so prices are often more expensive at around $456 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 $373 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 $266 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 2% 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 December 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

$98

Fastest flight time

5h 10m

Direct flights

Every day

Airports in Boston

1 airport
The best one-way flight to Boston from Seattle in the past 72 hours is $98. The best round-trip flight deal from Seattle to Boston found on momondo in the last 72 hours is $197.
The fastest flight from Seattle to Boston takes 5h 10m
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 10m.

  • 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 $135Free CancellationRating
7.4
3,249 reviews
Search JetBlue flights
Spirit AirlinesPriceFrom $145Free CancellationRating
6.3
8,102 reviews
Search Spirit Airlines flights
DeltaPriceFrom $172Free CancellationRating
8.0
8,580 reviews
Search Delta flights
Sun Country AirPriceFrom $176Free CancellationRating
7.0
392 reviews
Search Sun Country Air flights
Alaska AirlinesPriceFrom $204Free CancellationRating
8.0
9,554 reviews
Search Alaska Airlines flights
American AirlinesPriceFrom $232Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
United AirlinesPriceFrom $238Free CancellationRating
7.4
9,007 reviews
Search United Airlines flights
SouthwestPriceFrom $416Free CancellationRating
8.1
4,758 reviews
Search Southwest flights
  • Delta Flights From Seattle to Boston

    The lowest priced Delta flight from Seattle to Boston from the last 72 hours was $172. Generally, Delta has 14 flights on this route every week with an average price of $408. 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 $204, round-trip. It should be noted that an average Alaska Airlines flight deal for this route in this time was higher, at $468 round-trip. Alaska Airlines operates 12 flights out of Seattle into Boston in an average week, so prices vary by time and availability. 9,553 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.


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