
Popular airlines from Seattle-Tacoma International Airport (SEA) to Logan International Airport (BOS)
- Alaska Airlines
Alaska Airlines
- Delta
Delta
- American Airlines
American Airlines
- United
United
- Southwest Airlines
Southwest Airlines
- Sun Country Airlines
Sun Country Airlines
- JetBlue Airways
JetBlue Airways
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Cheap Flights from Seattle to Boston (SEA-BOS)
Prices were available within the past 7 days and start at S$200 for one-way flights and S$448 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.










Find the cheapest month to fly from Seattle (SEA) to Boston (BOS)
January is typically the cheapest month to fly
Origin airport | Seattle - Tacoma Intl. |
|---|---|
Destination airport | Logan Intl. |
Airlines serving | American Airlines, Delta, United |
Return price | S$448 |
Distance | 3980 km |
Average flight time | 9 hours 48 mins |
Flights from Seattle to Boston
There are several airlines that operate frequent flights from Seattle (SEA) to Boston (BOS) including
- Delta Air Lines with 218 flights a week
- Alaska Airlines with 170 flights a week
- American Airlines with 156 flights a week
- United Airlines with 80 flights a week
- with 78 flights a week
The earliest flight leaves Seattle Tacoma Intl. Airport at 07:00 and arrives at Logan Intl. Airport at 05:37. The last flight of the day departs Seattle at 23:59 and arrives at Boston at 23:59.
The flight distance from Seattle to Boston is about 4026 km, the shortest flight is 05 hours 05 minutes with .
Expedia lets you search across the largest number of airlines and Boston flights, which means that you’ll be able to find a great flight deal at the perfect travel date and time. Our simple-to-use booking engine makes looking for terrific bargains easy and hassle-free; just enter your travel dates and departure city, and let Expedia do the rest! Adjust your travel dates and explore connecting flights to find an even better deal on your Seattle Boston flight!
Browse through dozens of options and rest assured that you’re seeing the best price guaranteed! Our friendly customer service representatives are here to serve you 24 hours day to provide assistance and answer any questions that you may have about booking your Seattle to Boston trip. There’s simply no substitute for great prices suited to your travel needs and backed by excellent customer support.
Combine your Boston flight with a hotel and/or car rental for a package deal designed to save you even more money! Discover additional savings by booking in advance or find a last minute deal. There are tons of ways to save on your flights from Seattle to Boston with Expedia. Use us as your stop travel destination and have the confidence that you’re getting a bargain!
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