Cheap flights from Boston to Seattle from $119
Round-trip
1 adult
Economy
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Mon 6/5
Mon 6/12
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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 | $119 |
|---|---|
Fastest flight time | 6h 09m |
Direct flights | Every day |
Airports in Seattle | 1 airport |
The best one-way flight to Seattle from Boston in the past 72 hours is $119. The best round-trip flight deal from Boston to Seattle found on momondo in the last 72 hours is $235.
The fastest flight from Boston to Seattle takes 6h 09m
Direct flights go from Boston to Seattle every day.
There is 1 airport near Seattle: 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 June
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 Sunday
When is the cheapest time to fly from Boston to Seattle?
At noon. Boston to Seattle flights are approximately 21% more expensive in the afternoon than at noon
What is the cheapest airline that flies to Seattle from Boston?
Sun Country Air. Alaska Airlines, JetBlue, and Spirit Airlines 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
How far in advance should you book Boston to Seattle flights?
30 days before. The cheapest time to buy a flight from Boston to Seattle is approximately 30 days to departure
How many flights depart from Boston to Seattle on average per day?
As of May 2023, there are 22 flights per week flying from Boston to Seattle. The most common time of day flights depart is 5:00PM, with 51% of flights taking off in the afternoon.
How many flights depart from Boston to Seattle on average per week?
The number of flights available between Boston and Seattle is 158 per week as of May 2023. The most frequent departure day is Tuesday, with 16% of weekly flights leaving on this day.
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.
When you’re planning your trip from Boston to Seattle, the most popular airport-to-airport route is Boston Logan Intl Airport to Seattle/Tacoma Intl Airport. In May, $232 is typically the cheapest round trip price you’ll find from Boston to Seattle which you can find when you fly BOS — SEA.
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 six months. All fares were found on momondo this week. Browse the quickest and cheapest flights from Boston to Seattle by changing tabs
Alaska Airlines![Alaska Airlines]()
Nov 1![Alaska Airlines]()
Nov 8
BOS3:30 pmBoston Logan Intl
6h 23m
SEA9:53 pmSeattle/Tacoma Intl
SEA4:27 pmSeattle/Tacoma Intl
5h 18m
BOS9:45 pmBoston Logan Intl
Spirit Airlines![Spirit Airlines]()
Aug 22![Spirit Airlines]()
Aug 30
BOS4:01 amBoston Logan Intl
12h 41m
1 stop
SEA4:42 pmSeattle/Tacoma Intl
SEA2:34 pmSeattle/Tacoma Intl
9h 06m
1 stop
BOS11:40 pmBoston Logan Intl
JetBlue![JetBlue]()
Sep 14![JetBlue]()
Sep 19
BOS12:45 pmBoston Logan Intl
6h 24m
SEA7:09 pmSeattle/Tacoma Intl
SEA5:25 pmSeattle/Tacoma Intl
5h 19m
BOS10:44 pmBoston Logan Intl
Delta![Delta]()
Sep 26![Delta]()
Oct 2
BOS3:05 amBoston Logan Intl
6h 28m
SEA9:33 amSeattle/Tacoma Intl
SEA7:35 pmSeattle/Tacoma Intl
5h 30m
BOS1:05 amBoston Logan Intl
American Airlines![American Airlines]()
Sep 19![American Airlines]()
Sep 21
BOS9:05 amBoston Logan Intl
11h 58m
1 stop
SEA9:03 pmSeattle/Tacoma Intl
SEA1:54 amSeattle/Tacoma Intl
8h 20m
1 stop
BOS10:14 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 American Airlines, JetBlue and Spirit Airlines
Search last-minute flights to Seattle from Boston
Find and compare round-trip flight prices for your last-minute flight from Boston to Seattle
American Airlines![American Airlines]()
Jun 5![American Airlines]()
Jun 7
BOS12:09 pmBoston Logan Intl
8h 26m
1 stop
SEA8:35 pmSeattle/Tacoma Intl
SEA6:34 pmSeattle/Tacoma Intl
10h 51m
1 stop
BOS5:25 amBoston Logan Intl
United Airlines![United Airlines]()
Jun 6![United Airlines]()
Jun 7
BOS4:10 amBoston Logan Intl
16h 09m
2 stops
SEA8:19 pmSeattle/Tacoma Intl
SEA8:40 amSeattle/Tacoma Intl
8h 19m
1 stop
BOS4:59 pmBoston Logan Intl
JetBlue![JetBlue]()
Jun 7![JetBlue]()
Jun 17
BOS2:55 pmBoston Logan Intl
6h 38m
SEA9:33 pmSeattle/Tacoma Intl
SEA8:25 amSeattle/Tacoma Intl
5h 23m
BOS1:48 pmBoston Logan Intl
Multiple Airlines![Multiple Airlines]()
Jun 7![Multiple Airlines]()
Jun 11
BOS2:55 pmBoston Logan Intl
6h 38m
SEA9:33 pmSeattle/Tacoma Intl
SEA4:00 pmSeattle/Tacoma Intl
18h 55m
2 stops
BOS10:55 amBoston Logan Intl
Spirit Airlines![Spirit Airlines]()
Jun 8![Spirit Airlines]()
Jun 13
BOS4:01 amBoston Logan Intl
14h 06m
1 stop
SEA6:07 pmSeattle/Tacoma Intl
SEA2:34 pmSeattle/Tacoma Intl
20h 21m
2 stops
BOS10:55 amBoston Logan Intl
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 | ||
|---|---|---|---|---|---|
| PriceFrom $123 | Free Cancellation | Rating 6.2 2,178 reviews | |||
| PriceFrom $123 | Free Cancellation | Rating 7.2 2,104 reviews | |||
| PriceFrom $124 | Free Cancellation | Rating 7.9 1,987 reviews | |||
| PriceFrom $134 | Free Cancellation | Rating 7.0 940 reviews | |||
| PriceFrom $149 | Free Cancellation | Rating 7.8 1,263 reviews | |||
| PriceFrom $154 | Free Cancellation | Rating 7.2 2,254 reviews | |||
| PriceFrom $203 | Free Cancellation | Rating 7.6 45 reviews |
Alaska Airlines Flights From Boston to Seattle
Alaska Airlines flies from Boston to Seattle around 14 times per week, with 1,987 momondo users rating the airline 7.9/10. The cheapest Alaska Airlines deal from Boston to Seattle in the last 72 hours was $124 (round-trip), much lower than the average airfare cost of $357 for Alaska Airlines flights on this route.
Delta Flights From Boston to Seattle
The best Delta deal for Boston to Seattle flight tickets found on momondo in the last 72 hours was $149, round-trip. It should be noted that an average Delta flight deal for this route in this time was higher, at $417 round-trip. Delta operates 20 flights out of Boston into Seattle in an average week, so prices vary by time and availability. 1,263 Delta reviews by users on momondo have scored the airline at 7.8/10.
Alaska Airlines flights from Boston to Seattle
Our best Alaska Airlines deals on Boston to Seattle flight tickets
Alaska Airlines![Alaska Airlines]()
Nov 1![Alaska Airlines]()
Nov 8
BOS3:30 pmBoston Logan Intl
6h 23m
SEA9:53 pmSeattle/Tacoma Intl
SEA4:27 pmSeattle/Tacoma Intl
5h 18m
BOS9:45 pmBoston Logan Intl
Alaska Airlines![Alaska Airlines]()
Oct 27![Alaska Airlines]()
Oct 30
BOS3:30 pmBoston Logan Intl
6h 23m
SEA9:53 pmSeattle/Tacoma Intl
SEA11:44 amSeattle/Tacoma Intl
5h 15m
BOS4:59 pmBoston Logan Intl
American Airlines flights from Boston to Seattle
Our best American Airlines deals on Boston to Seattle flight tickets
American Airlines![American Airlines]()
Sep 19![American Airlines]()
Sep 21
BOS9:05 amBoston Logan Intl
11h 58m
1 stop
SEA9:03 pmSeattle/Tacoma Intl
SEA1:54 amSeattle/Tacoma Intl
8h 20m
1 stop
BOS10:14 amBoston Logan Intl
American Airlines![American Airlines]()
Sep 6![American Airlines]()
Sep 11
BOS12:30 pmBoston Logan Intl
11h 21m
1 stop
SEA11:51 pmSeattle/Tacoma Intl
SEA1:54 amSeattle/Tacoma Intl
8h 20m
1 stop
BOS10:14 amBoston Logan Intl
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 20m, depending on flying conditions and air traffic around both airports.
Alternative routes for Boston to Seattle
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Similar Boston to Seattle flights
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Why use momondo?
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