RM483 Cheap Flights from Seattle (SEA) to Boston (BOS)

View RM483 flight on Sat, 28 Feb 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 RM483 for one-way flights and RM965 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Sat, 28 Feb - Sat, 7 Mar
SEA
Seattle
BOS
Boston
RM965 Return, found 1 day ago
RM965
Return
found 1 day ago
Select Delta flight, departing Sat, 28 Feb from Seattle to Boston, returning Sat, 7 Mar, priced at RM965 found 1 day ago
Delta
Sat, 28 Feb - Sat, 7 Mar
SEA
Seattle
BOS
Boston
RM1,209 Return, found 1 day ago
RM1,209
Return
found 1 day ago
Select Delta flight, departing Sat, 28 Feb from Seattle to Boston, returning Sat, 7 Mar, priced at RM1,209 found 1 day ago
United
Sat, 28 Feb - Sat, 7 Mar
SEA
Seattle
BOS
Boston
RM1,210 Return, found 1 day ago
RM1,210
Return
found 1 day ago
Select United flight, departing Sat, 28 Feb from Seattle to Boston, returning Sat, 7 Mar, priced at RM1,210 found 1 day ago
Delta
Mon, 16 Mar - Sun, 22 Mar
SEA
Seattle
BOS
Boston
RM1,250 Return, found 4 days ago
RM1,250
Return
found 4 days ago
Select Delta flight, departing Mon, 16 Mar from Seattle to Boston, returning Sun, 22 Mar, priced at RM1,250 found 4 days ago
American Airlines
Sat, 28 Feb - Sat, 7 Mar
SEA
Seattle
BOS
Boston
RM1,290 Return, found 1 day ago
RM1,290
Return
found 1 day ago
Select American Airlines flight, departing Sat, 28 Feb from Seattle to Boston, returning Sat, 7 Mar, priced at RM1,290 found 1 day ago
Delta
Sat, 28 Feb - Sat, 7 Mar
SEA
Seattle
BOS
Boston
RM1,329 Return, found 1 day ago
RM1,329
Return
found 1 day ago
Select Delta flight, departing Sat, 28 Feb from Seattle to Boston, returning Sat, 7 Mar, priced at RM1,329 found 1 day ago
Delta
Mon, 16 Mar - Sun, 22 Mar
SEA
Seattle
BOS
Boston
RM1,351 Return, found 4 days ago
RM1,351
Return
found 4 days ago
Select Delta flight, departing Mon, 16 Mar from Seattle to Boston, returning Sun, 22 Mar, priced at RM1,351 found 4 days ago
Delta
Sat, 28 Feb - Sat, 7 Mar
SEA
Seattle
BOS
Boston
RM1,387 Return, found 1 day ago
RM1,387
Return
found 1 day ago
Select Delta flight, departing Sat, 28 Feb from Seattle to Boston, returning Sat, 7 Mar, priced at RM1,387 found 1 day ago
American Airlines
Sat, 28 Feb - Sat, 7 Mar
SEA
Seattle
BOS
Boston
RM1,412 Return, found 1 day ago
RM1,412
Return
found 1 day ago
Select American Airlines flight, departing Sat, 28 Feb from Seattle to Boston, returning Sat, 7 Mar, priced at RM1,412 found 1 day ago
Delta
Mon, 16 Mar - Sun, 22 Mar
SEA
Seattle
BOS
Boston
RM1,436 Return, found 4 days ago
RM1,436
Return
found 4 days ago
Select Delta flight, departing Mon, 16 Mar from Seattle to Boston, returning Sun, 22 Mar, priced at RM1,436 found 4 days ago

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

March is typically the cheapest month to fly

From RM 645 - RM 1,266 per traveller.
Seattle to Boston route information
Origin airport
Seattle - Tacoma Intl.
Destination airport
Logan Intl.
Return price
RM965
Distance
3980 km
Average flight time
9 hours 45 mins

Perfect flights from Seattle to Boston

Your Journey from Seattle to Boston

Start your unforgettable journey with Expedia. Our broad selection of flights from Seattle to Boston caters to every travel need. Whether you're yearning for a romantic escape, a solo adventure, or a cultural immersion, we've got you covered.
 

Choosing Your Ideal Flight

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.
 

Maximizing Value with Seattle to Boston Flights

Experience the joy of finding cheap flights from Seattle - Tacoma Intl. to Logan Intl. that fit your budget. Keep an eye out for our special deals and discounts, and check our flexible one-way fares from RM483 and roundtrip prices from RM965*.
 

Pre-Flight Essentials

Ensure a smooth journey from Seattle to Boston with Expedia. From information about check-in times and in-flight amenities to guidance on baggage policies, we provide all the essentials to prepare you for your flight.
 

Experience the Vibrant Boston

Picture yourself stepping off the plane in Boston and immersing yourself in the unique atmosphere of . From local markets to cultural festivals, each city offers its distinct charm. Make the most of your trip by exploring local attractions and indulging in the local cuisine. With Expedia, explore all this and more, tailored to your budget.
 

Added Convenience on Your Seattle to Boston Flight

Traveling with Expedia is more than just a flight. We offer details about in-flight amenities, baggage policies, and more to ensure a smooth and hassle-free journey. Choose from our variety of airlines and embark on a memorable journey from Seattle to Boston.
 

Beyond the Flight – Exploring Boston

With Expedia, your adventure extends beyond the flight. Explore Boston at your own pace by renting a car or booking a hotel. Discover hidden gems off the beaten path and create unforgettable memories.
 

Book Your Flight from Seattle to Boston with Confidence

Planning your next great adventure is a breeze with Expedia. Our user-friendly platform, unbeatable prices, and round-the-clock customer support make your travel experience seamless and stress-free. Embark on your journey from Seattle to Boston with confidence. Book your travel arrangements with Expedia today.
 
*Note: Prices may vary based on availability and are subject to change.

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 RM965. 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.

Explore a world of travel with Expedia

*Available to Expedia members.