Cheap flights from Seattle to Boston from $99

Round-trip
1 adult
Economy
0 bags
From?
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Sun 10/9
Sun 10/16

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Flight information for Seattle to Boston
(SEA to BOS)

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

Best Price Found

$99

Fastest flight time

5h 14m

Direct flights

Wed, Thu, Fri and Sun

Airports in Boston

2 airports
The best one-way flight to Boston from Seattle in the past 72 hours is $99. The best round-trip flight deal from Seattle to Boston found on momondo in the last 72 hours is $198.
The fastest flight from Seattle to Boston takes 5h 14m
Direct flights go from Seattle to Boston on Wednesday, Thursday, Friday and Sunday. Airlines offering direct flights are: American Airlines and Alaska Airlines.
There are 2 airports near Boston: Boston Logan Intl (BOS), Boston Harbor SPB (BNH)

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 from Seattle to Boston?

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

What is the cheapest day to depart Seattle for Boston?

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

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

in the evening. Seattle to Boston flights are approximately 30% more expensive at noon than in the evening

What is the cheapest airline that flies to Boston from Seattle?

Juneyao Airlines. Alaska Airlines, Frontier, and JetBlue are the most popular carriers operating from Seattle to Boston

What is the cheapest Seattle to Boston flight route?

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

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

27 days before. The cheapest time to buy a flight from Seattle to Boston is approximately 27 days to departure

If you are looking to fly from Seattle to Boston, you are most likely going to fly from Seattle/Tacoma Intl Airport to Boston Logan Intl Airport, the most popular airports on that route. In October, $198 is typically the cheapest round trip price you’ll find from Seattle to Boston which you can find when you fly SEA — BOS.

Seattle/Tacoma Intl Airport (SEA) to Boston Logan Intl Airport (BOS)$198
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Easily compare round-trip flights from Seattle to Boston

Below you can see the best fares for your round-trip flight route over the next three months. All fares were found on momondo this week. Browse the quickest and cheapest flights from Seattle to Boston by changing tabs
Delta
Jan 19
SEA6:05 pmSeattle/Tacoma Intl
5h 19m
BOS11:24 pmBoston Logan Intl
Jan 22
BOS2:00 amBoston Logan Intl
6h 45m
SEA8:45 amSeattle/Tacoma Intl
Multiple Airlines
Dec 6
SEA2:35 amSeattle/Tacoma Intl
5h 18m
BOS7:53 amBoston Logan Intl
Jan 17
BOS2:00 amBoston Logan Intl
6h 45m
SEA8:45 amSeattle/Tacoma Intl
JetBlue
Jan 4
SEA6:59 pmSeattle/Tacoma Intl
5h 05m
BOS12:04 amBoston Logan Intl
Jan 10
BOS2:15 pmBoston Logan Intl
6h 34m
SEA8:49 pmSeattle/Tacoma Intl
Alaska Airlines
Feb 18
SEA2:35 amSeattle/Tacoma Intl
5h 18m
BOS7:53 amBoston Logan Intl
Feb 22
BOS12:00 pmBoston Logan Intl
6h 30m
SEA6:30 pmSeattle/Tacoma Intl
United Airlines
Jan 5
SEA8:12 amSeattle/Tacoma Intl
7h 42m
1 stop
BOS3:54 pmBoston Logan Intl
Jan 12
BOS1:00 amBoston Logan Intl
8h 40m
1 stop
SEA9:40 amSeattle/Tacoma Intl
American Airlines
Nov 7
SEA8:30 pmSeattle/Tacoma Intl
9h 00m
1 stop
BOS5:30 amBoston Logan Intl
Nov 16
BOS9:38 amBoston Logan Intl
11h 37m
1 stop
SEA9:15 pmSeattle/Tacoma Intl

Find the cheapest one-way flights from Seattle to Boston

If you're looking for one-way flights from Seattle to Boston, view some of our deals below provided by Alaska Airlines, American Airlines and Delta
Delta
Feb 10
SEA2:20 amSeattle/Tacoma Intl
5h 16m
BOS7:36 amBoston Logan Intl
Alaska Airlines
Nov 2
SEA11:40 amSeattle/Tacoma Intl
5h 17m
BOS4:57 pmBoston Logan Intl
American Airlines
Dec 2
SEA8:26 amSeattle/Tacoma Intl
8h 11m
1 stop
BOS4:37 pmBoston Logan Intl

Search last-minute flights to Boston from Seattle

Find and compare round-trip flight prices for your last-minute flight from Seattle to Boston
Multiple Airlines
Oct 9
SEA7:05 pmSeattle/Tacoma Intl
9h 02m
1 stop
BOS4:07 amBoston Logan Intl
Nov 1
BOS3:55 pmBoston Logan Intl
6h 26m
SEA10:21 pmSeattle/Tacoma Intl
American Airlines
Oct 9
SEA7:05 pmSeattle/Tacoma Intl
9h 02m
1 stop
BOS4:07 amBoston Logan Intl
Nov 1
BOS8:30 amBoston Logan Intl
12h 57m
2 stops
SEA9:27 pmSeattle/Tacoma Intl
Alaska Airlines
Oct 11
SEA3:25 amSeattle/Tacoma Intl
5h 20m
BOS8:45 amBoston Logan Intl
Oct 25
BOS3:55 pmBoston Logan Intl
6h 26m
SEA10:21 pmSeattle/Tacoma Intl
JetBlue
Oct 11
SEA4:59 pmSeattle/Tacoma Intl
9h 08m
1 stop
BOS2:07 amBoston Logan Intl
Oct 19
BOS8:45 amBoston Logan Intl
9h 25m
1 stop
SEA6:10 pmSeattle/Tacoma Intl
Delta
Oct 11
SEA6:10 pmSeattle/Tacoma Intl
5h 10m
BOS11:20 pmBoston Logan Intl
Oct 19
BOS1:10 pmBoston Logan Intl
6h 30m
SEA7:40 pmSeattle/Tacoma Intl
Multiple Airlines
Oct 11
SEA6:25 amSeattle/Tacoma Intl
5h 23m
BOS11:48 amBoston Logan Intl
Oct 25
BOS6:54 amBoston Logan Intl
11h 16m
1 stop
SEA6:10 pmSeattle/Tacoma Intl

Best airlines flying from Seattle to Boston

Compare and see reviews for airlines that fly from Seattle to Boston with momondo
AirlineRatingFree CancellationPrice
Juneyao AirlinesPriceFrom $11Free CancellationRating
0.0
Search Juneyao Airlines flights
FrontierPriceFrom $111Free CancellationRating
6.1
6.4

Boarding

5.8

Comfort

6.9

Crew

4.7

Entertainment

5.0

Food

Reviews

Flight was supposed to leave at 6:39 and ended up leaving at 11pm

1 / 10
Search Frontier flights
Alaska AirlinesPriceFrom $114Free CancellationRating
8.1
8.3

Boarding

8.0

Comfort

8.6

Crew

7.2

Entertainment

7.2

Food

Reviews

Seated next to a gentleman that took up 1.5 seats. He was a bit big. It was very uncomfortable, almost bordering on disgusting sitting mushed up against this guy for 5 hours. There has to be some kind of provision to account for things like this. If someone cant fit within a single seat, they need to buy 2 or the airline should have a couple rows of 2 seat rows instead of 3. We didnt bring this to the crews attention as it was a full flight and not their fault whatsoever. The crew themselves were very nice, and attentive to calls as I watched. Just frustrated with the cattle herding without any concern to health or safety. This guy could not have gotten out the emergency exit even if he wanted to.

1 / 10
Search Alaska Airlines flights
United AirlinesPriceFrom $123Free CancellationRating
7.2
7.5

Boarding

7.1

Comfort

8.0

Crew

6.9

Entertainment

6.5

Food

Reviews

Just delayed for 15 hours.

1 / 10
Search United Airlines flights
Spirit AirlinesPriceFrom $127Free CancellationRating
6.3
6.5

Boarding

5.9

Comfort

7.0

Crew

4.9

Entertainment

5.1

Food

Reviews

Flight got cancelled twice and disrupted my entire trip which caused my a lot agony and more. Than $1200. Spirit does not even book/accommodate on other airlines even during such disruption.

1 / 10
Search Spirit Airlines flights
JetBluePriceFrom $133Free CancellationRating
7.0
7.1

Boarding

7.4

Comfort

7.7

Crew

7.0

Entertainment

6.5

Food

Reviews

Worst flight I have ever been on. 8 hours of one delay after another. No one had a clue on what to do. And there was zero communication to the passengers. I will never fly jet blue and. They truly are the new spirit airlines

1 / 10
Search JetBlue flights
DeltaPriceFrom $133Free CancellationRating
7.9
7.9

Boarding

8.0

Comfort

8.3

Crew

7.8

Entertainment

7.3

Food

Reviews

This is another disease as if you have the Internet, you are ordinary deceivers!

1 / 10
Search Delta flights
American AirlinesPriceFrom $155Free CancellationRating
7.1
7.4

Boarding

7.2

Comfort

7.9

Crew

6.9

Entertainment

6.4

Food

Reviews

BA food is always a little strange. Wasn’t as much food as usual

1 / 10
Search American Airlines flights
Sun Country AirPriceFrom $196Free CancellationRating
7.6
7.8

Boarding

7.6

Comfort

8.2

Crew

6.7

Entertainment

6.8

Food

Reviews

It felt as if the seats were closer together than other airlines. but i have gained weight so that may also be a culprit

1 / 10
Search Sun Country Air flights
  • Alaska Airlines Flights From Seattle to Boston

    The lowest priced Alaska Airlines flight from Seattle to Boston from the last 72 hours was $114. Generally, Alaska Airlines has 6 flights on this route every week with an average price of $363. Alaska Airlines is rated 8.1/10 by our users.

  • Delta Flights From Seattle to Boston

    The best Delta deal for Seattle to Boston flight tickets found on momondo in the last 72 hours was $133, round-trip. It should be noted that an average Delta flight deal for this route in this time was higher, at $462 round-trip. Delta operates 8 flights out of Seattle into Boston in an average week, so prices vary by time and availability. 410 Delta reviews by users on momondo have scored the airline at 7.9/10.


Alaska Airlines flights from Seattle to Boston

Our best Alaska Airlines deals on Seattle to Boston flight tickets
Alaska Airlines
Feb 18
SEA2:35 amSeattle/Tacoma Intl
5h 18m
BOS7:53 amBoston Logan Intl
Feb 22
BOS12:00 pmBoston Logan Intl
6h 30m
SEA6:30 pmSeattle/Tacoma Intl
Alaska Airlines
Nov 9
SEA10:40 amSeattle/Tacoma Intl
5h 17m
BOS3:57 pmBoston Logan Intl
Nov 14
BOS2:55 pmBoston Logan Intl
6h 26m
SEA9:21 pmSeattle/Tacoma Intl
Alaska Airlines
Oct 25
SEA5:45 pmSeattle/Tacoma Intl
5h 10m
BOS10:55 pmBoston Logan Intl
Nov 4
BOS3:55 pmBoston Logan Intl
6h 26m
SEA10:21 pmSeattle/Tacoma Intl

American Airlines flights from Seattle to Boston

Our best American Airlines deals on Seattle to Boston flight tickets
American Airlines
Nov 7
SEA8:30 pmSeattle/Tacoma Intl
9h 00m
1 stop
BOS5:30 amBoston Logan Intl
Nov 16
BOS9:38 amBoston Logan Intl
11h 37m
1 stop
SEA9:15 pmSeattle/Tacoma Intl
American Airlines
Dec 1
SEA8:26 amSeattle/Tacoma Intl
8h 11m
1 stop
BOS4:37 pmBoston Logan Intl
Dec 4
BOS11:35 amBoston Logan Intl
9h 44m
1 stop
SEA9:19 pmSeattle/Tacoma Intl
American Airlines
Dec 1
SEA6:40 amSeattle/Tacoma Intl
9h 31m
1 stop
BOS4:11 pmBoston Logan Intl
Dec 10
BOS11:43 amBoston Logan Intl
9h 36m
1 stop
SEA9:19 pmSeattle/Tacoma Intl

  • Are airlines flying from Seattle/Tacoma Intl to Boston Logan Intl offering flexible cancellation due to COVID-19?

    To ease the stress of booking flights, some of our airline partners flying from Seattle/Tacoma Intl to Boston Logan Intl are responding to the global pandemic. The following airlines may have a flexible cancellation policy to help accommodate travelers: Delta, Alaska Airlines, and JetBlue.

  • 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 02m.



Alternative routes for Seattle to Boston

Compare alternative flights to and from nearby airports and cities to discover the best prices and most convenient flight times
Spokane to Boston Flights
Fastest flight time6h 56m
Cheapest price$324
Bellingham to Boston Flights
Fastest flight time7h 23m
Cheapest price$734

Similar Seattle to Boston flights

Flexible with your destination? Broaden your search and find flights similar to your Seattle to Boston route

Why use momondo?

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.

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

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.

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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