RM490 Cheap Flights from Seattle (SEA) to Boston (BOS)

View RM490 flight on Sun, 23 Nov 2025Opens in a new window

Popular airlines from Seattle-Tacoma International Airport (SEA) to Logan International Airport (BOS)

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Cheap Flights from Seattle to Boston (SEA-BOS)

Prices were available within the past 7 days and start at RM490 for one-way flights and RM1,004 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Sat, 6 Dec - Sat, 13 Dec
SEA
Seattle
BOS
Boston
RM1,004 Return, found 1 day ago
RM1,004
Return
found 1 day ago
Select Delta flight, departing Sat, 6 Dec from Seattle to Boston, returning Sat, 13 Dec, priced at RM1,004 found 1 day ago
Delta
Sat, 6 Dec - Sat, 13 Dec
SEA
Seattle
BOS
Boston
RM1,131 Return, found 1 day ago
RM1,131
Return
found 1 day ago
Select Delta flight, departing Sat, 6 Dec from Seattle to Boston, returning Sat, 13 Dec, priced at RM1,131 found 1 day ago
United
Sat, 6 Dec - Sat, 13 Dec
SEA
Seattle
BOS
Boston
RM1,238 Return, found 1 day ago
RM1,238
Return
found 1 day ago
Select United flight, departing Sat, 6 Dec from Seattle to Boston, returning Sat, 13 Dec, priced at RM1,238 found 1 day ago
United
Sat, 6 Dec - Sat, 13 Dec
SEA
Seattle
BOS
Boston
RM1,256 Return, found 1 day ago
RM1,256
Return
found 1 day ago
Select United flight, departing Sat, 6 Dec from Seattle to Boston, returning Sat, 13 Dec, priced at RM1,256 found 1 day ago
United
Sat, 6 Dec - Sat, 13 Dec
SEA
Seattle
BOS
Boston
RM1,257 Return, found 1 day ago
RM1,257
Return
found 1 day ago
Select United flight, departing Sat, 6 Dec from Seattle to Boston, returning Sat, 13 Dec, priced at RM1,257 found 1 day ago
Delta
Sat, 6 Dec - Sat, 13 Dec
SEA
Seattle
BOS
Boston
RM1,300 Return, found 1 day ago
RM1,300
Return
found 1 day ago
Select Delta flight, departing Sat, 6 Dec from Seattle to Boston, returning Sat, 13 Dec, priced at RM1,300 found 1 day ago
United
Sat, 6 Dec - Sat, 13 Dec
SEA
Seattle
BOS
Boston
RM1,366 Return, found 1 day ago
RM1,366
Return
found 1 day ago
Select United flight, departing Sat, 6 Dec from Seattle to Boston, returning Sat, 13 Dec, priced at RM1,366 found 1 day ago
United
Sat, 6 Dec - Sat, 13 Dec
SEA
Seattle
BOS
Boston
RM1,384 Return, found 1 day ago
RM1,384
Return
found 1 day ago
Select United flight, departing Sat, 6 Dec from Seattle to Boston, returning Sat, 13 Dec, priced at RM1,384 found 1 day ago
United
Sat, 6 Dec - Sat, 13 Dec
SEA
Seattle
BOS
Boston
RM1,385 Return, found 1 day ago
RM1,385
Return
found 1 day ago
Select United flight, departing Sat, 6 Dec from Seattle to Boston, returning Sat, 13 Dec, priced at RM1,385 found 1 day ago
American Airlines
Sat, 6 Dec - Sat, 13 Dec
SEA
Seattle
BOS
Boston
RM1,488 Return, found 1 day ago
RM1,488
Return
found 1 day ago
Select American Airlines flight, departing Sat, 6 Dec from Seattle to Boston, returning Sat, 13 Dec, priced at RM1,488 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 RM 657 - RM 1,331 per traveller.

Frequently asked questions

How much is a flight from SEA to Logan Intl. Airport (BOS)?
If you're travelling from Sea-Tac Airport to BOS, round-trip flights start from RM1,004. 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 kilometres 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
American Airlines, Delta, United
Return price
RM1,004
Distance
3980 km
Average flight time
8 hours 32 mins

Book with confidence

Perfect flights from Seattle to Boston

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With Expedia, you have access to a wide range of airlines, including Delta, American Airlines, United. Our selection of flights from Seattle - Tacoma Intl. to Logan Intl. caters to every traveler's requirements, ensuring your journey aligns with your schedule. With options from 20 airlines, you're bound to find the perfect flight.
 

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Experience the Vibrant Boston

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*Note: Prices may vary based on availability and are subject to change.
Perfect flights from Seattle to Boston

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