RM589 Cheap Flights from Seattle (SEA) to Boston (BOS)

View RM589 flight on Sat, 30 May 2026Opens 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 RM589 for one-way flights and RM1,177 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Sat, 30 May - Sat, 6 Jun
SEA
Seattle
BOS
Boston
RM1,177 Return, found 15 hours ago
RM1,177
Return
found 15 hours ago
Select Delta flight, departing Sat, 30 May from Seattle to Boston, returning Sat, 6 Jun, priced at RM1,177 found 15 hours ago
United
Sat, 30 May - Sat, 6 Jun
SEA
Seattle
BOS
Boston
RM1,375 Return, found 15 hours ago
RM1,375
Return
found 15 hours ago
Select United flight, departing Sat, 30 May from Seattle to Boston, returning Sat, 6 Jun, priced at RM1,375 found 15 hours ago
Delta
Sat, 30 May - Sat, 6 Jun
SEA
Seattle
BOS
Boston
RM1,414 Return, found 15 hours ago
RM1,414
Return
found 15 hours ago
Select Delta flight, departing Sat, 30 May from Seattle to Boston, returning Sat, 6 Jun, priced at RM1,414 found 15 hours ago
Delta
Sun, 11 Oct - Fri, 23 Oct
SEA
Seattle
BOS
Boston
RM1,454 Return, found 15 hours ago
RM1,454
Return
found 15 hours ago
Select Delta flight, departing Sun, 11 Oct from Seattle to Boston, returning Fri, 23 Oct, priced at RM1,454 found 15 hours ago
Delta
Sat, 30 May - Sat, 6 Jun
SEA
Seattle
BOS
Boston
RM1,474 Return, found 15 hours ago
RM1,474
Return
found 15 hours ago
Select Delta flight, departing Sat, 30 May from Seattle to Boston, returning Sat, 6 Jun, priced at RM1,474 found 15 hours ago
Delta
Sat, 30 May - Sat, 6 Jun
SEA
Seattle
BOS
Boston
RM1,475 Return, found 15 hours ago
RM1,475
Return
found 15 hours ago
Select Delta flight, departing Sat, 30 May from Seattle to Boston, returning Sat, 6 Jun, priced at RM1,475 found 15 hours ago
American Airlines
Sat, 30 May - Sat, 6 Jun
SEA
Seattle
BOS
Boston
RM1,514 Return, found 15 hours ago
RM1,514
Return
found 15 hours ago
Select American Airlines flight, departing Sat, 30 May from Seattle to Boston, returning Sat, 6 Jun, priced at RM1,514 found 15 hours ago
Delta
Fri, 5 Jun - Mon, 15 Jun
SEA
Seattle
BOS
Boston
RM1,554 Return, found 1 day ago
RM1,554
Return
found 1 day ago
Select Delta flight, departing Fri, 5 Jun from Seattle to Boston, returning Mon, 15 Jun, priced at RM1,554 found 1 day ago
Delta
Sat, 30 May - Sat, 6 Jun
SEA
Seattle
BOS
Boston
RM1,573 Return, found 15 hours ago
RM1,573
Return
found 15 hours ago
Select Delta flight, departing Sat, 30 May from Seattle to Boston, returning Sat, 6 Jun, priced at RM1,573 found 15 hours ago
American Airlines
Sat, 30 May - Sat, 6 Jun
SEA
Seattle
BOS
Boston
RM1,592 Return, found 15 hours ago
RM1,592
Return
found 15 hours ago
Select American Airlines flight, departing Sat, 30 May from Seattle to Boston, returning Sat, 6 Jun, priced at RM1,592 found 15 hours ago

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

May is typically the cheapest month to fly

From RM 793 - RM 1,348 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 RM1,177. 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
RM1,177
Distance
3980 km
Average flight time
8 hours 23 mins

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