₩243,400 Cheap Flights from Seattle (SEA) to Boston (BOS)

Bundle Your Flight + Hotel & Save!

    Plan, book, fly with confidence
  • trending down icon
    Be in the know
    Get alerts if flight prices drop or rise*
  • bex rewards loyalty icon
    Book smarter
    Save up to 40% on select hotels after you book a flight*
  • payments icon
    Earn twice
    Earn your airline miles on top of our rewards
    Sign in

Cheap Flights from Seattle to Boston (SEA-BOS)

Prices were available within the past 7 days and start at ₩243,400 for one-way flights and ₩492,300 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Sat, Oct 26 - Fri, Nov 1
SEA
Seattle
BOS
Boston
₩492,300 Roundtrip, found 3 days ago
₩492,300
Roundtrip
found 3 days ago
Select Delta flight, departing Sat, Oct 26 from Seattle to Boston, returning Fri, Nov 1, priced at ₩492,300 found 3 days ago
United
Tue, Aug 20 - Mon, Aug 26
SEA
Seattle
BOS
Boston
₩493,600 Roundtrip, found 5 days ago
₩493,600
Roundtrip
found 5 days ago
Select United flight, departing Tue, Aug 20 from Seattle to Boston, returning Mon, Aug 26, priced at ₩493,600 found 5 days ago
Delta
Sat, Oct 26 - Fri, Nov 1
SEA
Seattle
BOS
Boston
₩493,800 Roundtrip, found 3 days ago
₩493,800
Roundtrip
found 3 days ago
Select Delta flight, departing Sat, Oct 26 from Seattle to Boston, returning Fri, Nov 1, priced at ₩493,800 found 3 days ago
United
Mon, Sep 9 - Wed, Sep 18
SEA
Seattle
BOS
Boston
₩495,200 Roundtrip, found 5 days ago
₩495,200
Roundtrip
found 5 days ago
Select United flight, departing Mon, Sep 9 from Seattle to Boston, returning Wed, Sep 18, priced at ₩495,200 found 5 days ago
United
Sat, Oct 26 - Fri, Nov 1
SEA
Seattle
BOS
Boston
₩496,500 Roundtrip, found 3 days ago
₩496,500
Roundtrip
found 3 days ago
Select United flight, departing Sat, Oct 26 from Seattle to Boston, returning Fri, Nov 1, priced at ₩496,500 found 3 days ago
United
Sat, Oct 26 - Fri, Nov 1
SEA
Seattle
BOS
Boston
₩498,100 Roundtrip, found 3 days ago
₩498,100
Roundtrip
found 3 days ago
Select United flight, departing Sat, Oct 26 from Seattle to Boston, returning Fri, Nov 1, priced at ₩498,100 found 3 days ago
United
Tue, Aug 20 - Mon, Aug 26
SEA
Seattle
BOS
Boston
₩502,500 Roundtrip, found 5 days ago
₩502,500
Roundtrip
found 5 days ago
Select United flight, departing Tue, Aug 20 from Seattle to Boston, returning Mon, Aug 26, priced at ₩502,500 found 5 days ago
Delta
Mon, Sep 9 - Wed, Sep 18
SEA
Seattle
BOS
Boston
₩504,000 Roundtrip, found 5 days ago
₩504,000
Roundtrip
found 5 days ago
Select Delta flight, departing Mon, Sep 9 from Seattle to Boston, returning Wed, Sep 18, priced at ₩504,000 found 5 days ago
United
Wed, Sep 18 - Wed, Sep 25
SEA
Seattle
BOS
Boston
₩508,200 Roundtrip, found 17 hours ago
₩508,200
Roundtrip
found 17 hours ago
Select United flight, departing Wed, Sep 18 from Seattle to Boston, returning Wed, Sep 25, priced at ₩508,200 found 17 hours ago
Delta
Wed, Sep 18 - Wed, Sep 25
SEA
Seattle
BOS
Boston
₩522,800 Roundtrip, found 17 hours ago
₩522,800
Roundtrip
found 17 hours ago
Select Delta flight, departing Wed, Sep 18 from Seattle to Boston, returning Wed, Sep 25, priced at ₩522,800 found 17 hours ago
Flights from Seattle (SEA) to Boston (BOS)
Origin airport
Seattle - Tacoma Intl.
Destination airport
Logan Intl.
Airlines serving
American Airlines, Delta, United
Roundtrip price
₩492,300
Distance
3980 km

Seattle to Boston Flights

Sometimes you just need to get out of town or maybe you’re looking for a change of scenery. Regardless of the reason, a flight from Seattle to Boston will do just the trick! Go on, plan to see all the famous landmarks and eat your weight in the local cuisine. Your trip is beckoning, so answer the call by packing your suitcase and filling your travel itinerary with exploring Boston.

Whether you’re flying for business or jet-setting on your personal time, you’ve come to the right place. Here at Expedia.com, we’ll pair you up with SEA to BOS flights that won’t make your bank account wince. Ready to temporarily leave behind Seattle for new horizons? Browse through our cheap airfare, and filter by flight times and dates until you find just what you had in mind. From flights without layovers to ones that arrive early in the morning, you’ll come across plane tickets that suit your travel preferences. You can even bundle your flight to BOS with hotels and car rentals to score even bigger savings.

All set to hit the clouds? Book your travel arrangements with us today and have left-over money to put toward your travel outings and adventures.

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 ₩492,300. 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.
*Available to Expedia members.