Cheap Flights from Seattle (SEA) to Boston (BOS) from HK$1,002~

View HK$1,002 flight on Tue, 3 Feb 2026Opens in a new window

Popular airlines from Seattle to Boston

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Find Cheap Flights from Seattle (SEA) to Boston (BOS)

Prices were available within the past 7 days and start at HK$1,002 for one-way flights and HK$2,003 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Tue, 3 Feb - Wed, 4 Feb
SEA
Seattle
BOS
Boston
HK$2,003 Return, found 1 day ago
HK$2,003
Return
found 1 day ago
Select Delta flight, departing Tue, 3 Feb from Seattle to Boston, returning Wed, 4 Feb, priced at HK$2,003 found 1 day ago
Delta
Tue, 3 Feb - Wed, 4 Feb
SEA
Seattle
BOS
Boston
HK$2,197 Return, found 1 day ago
HK$2,197
Return
found 1 day ago
Select Delta flight, departing Tue, 3 Feb from Seattle to Boston, returning Wed, 4 Feb, priced at HK$2,197 found 1 day ago
Delta
Tue, 3 Feb - Wed, 4 Feb
SEA
Seattle
BOS
Boston
HK$2,241 Return, found 1 day ago
HK$2,241
Return
found 1 day ago
Select Delta flight, departing Tue, 3 Feb from Seattle to Boston, returning Wed, 4 Feb, priced at HK$2,241 found 1 day ago
Delta
Tue, 3 Feb - Wed, 4 Feb
SEA
Seattle
BOS
Boston
HK$2,305 Return, found 1 day ago
HK$2,305
Return
found 1 day ago
Select Delta flight, departing Tue, 3 Feb from Seattle to Boston, returning Wed, 4 Feb, priced at HK$2,305 found 1 day ago
United
Tue, 3 Feb - Wed, 4 Feb
SEA
Seattle
BOS
Boston
HK$2,478 Return, found 1 day ago
HK$2,478
Return
found 1 day ago
Select United flight, departing Tue, 3 Feb from Seattle to Boston, returning Wed, 4 Feb, priced at HK$2,478 found 1 day ago
Delta
Tue, 3 Feb - Wed, 4 Feb
SEA
Seattle
BOS
Boston
HK$2,542 Return, found 1 day ago
HK$2,542
Return
found 1 day ago
Select Delta flight, departing Tue, 3 Feb from Seattle to Boston, returning Wed, 4 Feb, priced at HK$2,542 found 1 day ago
American Airlines
Tue, 3 Feb - Wed, 4 Feb
SEA
Seattle
BOS
Boston
HK$2,628 Return, found 1 day ago
HK$2,628
Return
found 1 day ago
Select American Airlines flight, departing Tue, 3 Feb from Seattle to Boston, returning Wed, 4 Feb, priced at HK$2,628 found 1 day ago
Delta
Tue, 3 Feb - Wed, 4 Feb
SEA
Seattle
BOS
Boston
HK$2,788 Return, found 1 day ago
HK$2,788
Return
found 1 day ago
Select Delta flight, departing Tue, 3 Feb from Seattle to Boston, returning Wed, 4 Feb, priced at HK$2,788 found 1 day ago
Delta
Sat, 31 Jan - Thu, 12 Feb
SEA
Seattle
BOS
Boston
HK$2,821 Return, found 1 day ago
HK$2,821
Return
found 1 day ago
Select Delta flight, departing Sat, 31 Jan from Seattle to Boston, returning Thu, 12 Feb, priced at HK$2,821 found 1 day ago
Alaska Airlines
Tue, 3 Feb - Wed, 4 Feb
SEA
Seattle
BOS
Boston
HK$3,057 Return, found 1 day ago
HK$3,057
Return
found 1 day ago
Select Alaska Airlines flight, departing Tue, 3 Feb from Seattle to Boston, returning Wed, 4 Feb, priced at HK$3,057 found 1 day ago

Find the cheapest month to fly from Seattle (SEA) to Boston (BOS)

March is typically the cheapest month to fly

From HK$1,220 - HK$2,388 per traveller.

Frequently asked questions

How much is a flight from SEA to Logan Intl. Airport (BOS)?
If you're traveling from Sea-Tac Airport to BOS, round-trip flights start from HK$2,003. This figure is based on fares listed within the last 7 days on Expedia for flights departing within the next year, so don't wait around. Book today and save yourself both money and time. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from Seattle - Tacoma Intl. Airport (SEA) to BOS?
We get that your situation can change unexpectedly, so we've made it as hassle-free as possible for you to cancel your flight online. Just head to the Customer Service Portal and follow the instructions.
How do I find cheap flights from Seattle - Tacoma Intl. Airport (SEA) to Logan Intl. Airport (BOS) that have flexible change policies?
Many airlines offer the option to reschedule your flight without a change fee. All you pay is the difference between the original flight and the new flight. When you're searching for SEA to Logan Intl. Airport flights, you'll see a "no change fees" filter for you to select.
How far is the flight from Sea-Tac Airport to Logan Intl. Airport?
With around 4,000 kilometers separating Sea-Tac Airport and Logan Intl. Airport, your flight will be a long one. Pack wisely to make your time in the air more comfortable. Simple things like an eye mask and a quality neck pillow can make a massive difference.
Which airlines fly direct from Seattle - Tacoma Intl. Airport (SEA) to Logan Intl. Airport?
A popular airline that operates on the route from SEA to Logan Intl. Airport (BOS) is Alaska Airlines (AS). It offers 117 flights a month. Like some more options? Check out the airfares with Delta Air Lines (DL). This carrier offers 78 monthly flights between these airports.
Are Sea-Tac Airport to BOS flight tickets cheaper when they're purchased at the last minute?
It is possible to nab great last-minute deals from Sea-Tac Airport to BOS, but there's no guarantee. As many airlines advertise prices up to a year in advance, it's worth keeping an eye on fares early and being ready to pounce when you spot a bargain. Expedia compares air carrier prices and updates flight deals all the time, so you can feel confident knowing you're always getting the latest offers.

Travel information

Origin airport
Seattle - Tacoma Intl.
Destination airport
Logan Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, United
Return price
HK$1,959
Distance
3980 km
Average flight time
8 hours 57 mins

Book with confidence

Flights from Seattle to Boston

Book cheap flights from Seattle (SEA) to Boston (BOS) on Expedia.com.hk. Find the best flight deals to destinations around the world for your next leisure or business travel on Expedia.com.hk.

Search for flights from Seattle (SEA) to Boston (BOS) to find great flight deals suitable to your travel date and time. Expedia.com.hk flight booking search engine is simple to use and looking for cheap flights is as easy as a click of a mouse or on your mobile devices.

Be 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 (SEA) to Boston (BOS) trip. Call us at 3077-4857 (direct number - 24 hours day for English).

Save more when combine your Boston flight with a hotel for a package deal! Discover additional savings by booking in advance. Now you can find activities in Boston and things to do in Boston for your perfect vacation with Expedia Thing to Do.

If you would like to book flights to Boston more flexibly, many prefer to purchase one-way tickets with options to take different airlines. A one way ticket to Boston is HK$1,002 now!

 

Flights from Seattle to Boston

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