Cheap flights from Boston to Seattle

Round-trip
Economy
Boston (BOS)
Seattle (SEA)
Sat 5/8
Sat 5/15
Any month
Compare vs. momondo |

Flight information for Boston to Seattle
(BOS to SEA)

Find info about flight duration, direct flights, and airports for your flight from Boston to Seattle
Best Price Found$221The best flight deal from Boston to Seattle found on momondo in the last 72 hours is $221
Fastest flight time6h 18mThe fastest flight from Boston to Seattle takes 6h 18m
Direct flightsMo, Fr and SuDirect flights go from Boston to Seattle on Monday, Friday and Sunday. Airlines offering direct flights are: Delta and Alaska Airlines.
Airports in Seattle3 airportsThere are 3 airports near Seattle: Seattle King County/Boeing (BFI), Seattle Lake Union Spb (LKE), Seattle/Tacoma Intl (SEA)

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 December

What is the cheapest day to depart Boston for Seattle?

Wednesday
The cheapest day of the week is typically Wednesday. The most expensive is typically Monday

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

in the afternoon
Boston to Seattle flights are approximately 19% more expensive in the morning than in the afternoon

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

Major Airline
Major Airline, Spirit Airlines, and Frontier are the most popular carriers operating from Boston to Seattle

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
BOS
Boston Logan Intl
SEA
Seattle/Tacoma Intl

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

56 days before
The cheapest time to buy a flight from Boston to Seattle is approximately 56 days to departure
60
Days before departure
0

Easily compare round-trip flights from Boston to Seattle

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 Boston to Seattle by changing tabs
Multiple Airlines
Apr 29
2:00 pmBoston Logan Intl
6h 21m
8:21 pmSeattle/Tacoma Intl
May 5
11:50 amSeattle/Tacoma Intl
5h 09m
4:59 pmBoston Logan Intl
JetBlue
Apr 29
2:00 pmBoston Logan Intl
6h 21m
8:21 pmSeattle/Tacoma Intl
May 8
6:30 pmSeattle/Tacoma Intl
5h 18m
11:48 pmBoston Logan Intl
JetBlue
Apr 29
2:00 pmBoston Logan Intl
6h 21m
8:21 pmSeattle/Tacoma Intl
May 3
6:45 pmSeattle/Tacoma Intl
5h 18m
12:03 amBoston Logan Intl

Find the cheapest one-way flights from Boston to Seattle

If you're looking for one-way flights from Boston to Seattle, view some of our deals below provided by Frontier
Alaska Airlines
May 12
3:00 amBoston Logan Intl
6h 20m
9:20 amSeattle/Tacoma Intl
Alaska Airlines
Apr 27
4:10 amBoston Logan Intl
12h 30m
1 stop
4:40 pmSeattle/Tacoma Intl
Multiple Airlines
Apr 21
2:00 amBoston Logan Intl
29h 33m
2 stops
7:33 amSeattle/Tacoma Intl

Best airlines flying from Boston to Seattle

Compare and see reviews for airlines that fly from Boston to Seattle with momondo
AirlineRatingFree CancellationPrice
Spirit Airlines
PriceFrom $94
Free Cancellation
Rating
7.3
7.3

Boarding

7.3

Comfort

7.3

Crew

7.3

Entertainment

7.3

Food

Reviews

Pros: We made it safely

Cons: Awful experience. Early in the day I received several updates about my flight being delayed. No details on why, but much appreciated. Upon arriving to the airport the flight was still showing 59 mins delayed. Oddly, with all of the early communxaruin, it suddenly ceased! No communication for at least 2 hrs before the flight. Even as the 'would be' boarding window, the line formed with people asking questions... yet there were no answers or updates to the proposed time of departure. Even when the 59 min late departure came and went, there was NO communication. Folks were in an uproar! Finally, with no announcement, the gate attendant just started checking boarding passes and letting people go through the gate. Huh? I have zone 1, yet he said, we're just boarding everybody.... and, on the 3+ hr flight, only 1 bathroom worked. AWFUL EXPERIENCE!!!

1 / 1
Alaska Airlines
PriceFrom $118
Free Cancellation
Rating
7.7
8.0

Boarding

8.0

Comfort

8.0

Crew

7.0

Entertainment

7.3

Food

Reviews

Pros: Yeah

1 / 4
Delta
PriceFrom $118
Free Cancellation
Rating
8.3
8.2

Boarding

8.5

Comfort

8.8

Crew

7.8

Entertainment

8.1

Food

Reviews

Pros: I appreciate the choice of snacks.

Cons: The coffee served on the flight was lukewarm.

1 / 9
United Airlines
PriceFrom $122
Free Cancellation
Rating
6.6
6.4

Boarding

7.0

Comfort

7.3

Crew

6.0

Entertainment

6.6

Food

Reviews

Pros: It was meh....

Cons: I got no notification that the flight was going to be 1 hour earlier

1 / 6
American Airlines
PriceFrom $126
Free Cancellation
Rating
7.2
7.9

Boarding

7.0

Comfort

7.7

Crew

7.4

Entertainment

6.4

Food

Reviews

Pros: Entertainment

Cons: The seat space/leg room is tiny. I found it impossible to fall asleep, being in the middle of a row of three with two "big" people in either side.

1 / 8
JetBlue
PriceFrom $138
Free Cancellation
Rating
8.7
9.0

Boarding

9.0

Comfort

8.9

Crew

8.3

Entertainment

8.6

Food

Reviews

Cons: Todo fue Exelente...

1 / 4
Frontier
PriceFrom $138
Free Cancellation
Rating
7.0

Which airlines flying from Boston Logan Intl to Seattle/Tacoma Intl have COVID-19 safety policies in place?

Many airlines have put safety measures in place to reduce the spread of COVID-19. Two of the airlines doing this are Alaska Airlines and Delta. Many airlines flying from Boston Logan Intl to Seattle/Tacoma Intl are offering enhanced cleaning of their aircraft. Additional policies include pre-flight testing for COVID-19-related symptoms and antibodies. Masks are also required and are provided to travelers. Some airlines are offering socially-distanced seating for a limited time. Policies will vary by airline so keep this in mind as you search for options.

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

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


Alternative routes for Boston to Seattle

Compare alternative flights to and from nearby airports and cities to discover the best prices and most convenient flight times
Boston to Spokane Flights
Fastest flight time
7h 41m
Cheapest price
$307

Flights from Boston to:

  • Round-trip
  • One-way
  • Multi-city
  • Economy
  • Premium Economy
  • Business
  • First
  • Multiple
Economy
  • Economy
  • Premium Economy
  • Business
  • First
Economy
  • Economy
  • Premium Economy
  • Business
  • First
Economy
  • Economy
  • Premium Economy
  • Business
  • First
Economy
  • Economy
  • Premium Economy
  • Business
  • First
Economy
  • Economy
  • Premium Economy
  • Business
  • First
Economy
  • Economy
  • Premium Economy
  • Business
  • First