NZ$171 Cheap Flights Boston to Seattle (BOS-SEA)

View NZ$171 flight on Tue, 18 Nov 2025Opens in a new window

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

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

Prices were available within the past 7 days for one-way flights and round trip tickets for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Tue, 11 Nov - Tue, 18 Nov
BOS
Boston
SEA
Seattle
NZ$341 Return, found 4 days ago
NZ$341
Return
found 4 days ago
Select Delta flight, departing Tue, 11 Nov from Boston to Seattle, returning Tue, 18 Nov, priced at NZ$341 found 4 days ago
American Airlines
Tue, 11 Nov - Tue, 18 Nov
BOS
Boston
SEA
Seattle
NZ$357 Return, found 4 days ago
NZ$357
Return
found 4 days ago
Select American Airlines flight, departing Tue, 11 Nov from Boston to Seattle, returning Tue, 18 Nov, priced at NZ$357 found 4 days ago
American Airlines
Tue, 11 Nov - Tue, 18 Nov
BOS
Boston
SEA
Seattle
NZ$391 Return, found 4 days ago
NZ$391
Return
found 4 days ago
Select American Airlines flight, departing Tue, 11 Nov from Boston to Seattle, returning Tue, 18 Nov, priced at NZ$391 found 4 days ago
American Airlines
Tue, 11 Nov - Tue, 18 Nov
BOS
Boston
SEA
Seattle
NZ$427 Return, found 4 days ago
NZ$427
Return
found 4 days ago
Select American Airlines flight, departing Tue, 11 Nov from Boston to Seattle, returning Tue, 18 Nov, priced at NZ$427 found 4 days ago
Delta
Tue, 11 Nov - Tue, 18 Nov
BOS
Boston
SEA
Seattle
NZ$428 Return, found 4 days ago
NZ$428
Return
found 4 days ago
Select Delta flight, departing Tue, 11 Nov from Boston to Seattle, returning Tue, 18 Nov, priced at NZ$428 found 4 days ago
American Airlines
Tue, 11 Nov - Tue, 18 Nov
BOS
Boston
SEA
Seattle
NZ$435 Return, found 4 days ago
NZ$435
Return
found 4 days ago
Select American Airlines flight, departing Tue, 11 Nov from Boston to Seattle, returning Tue, 18 Nov, priced at NZ$435 found 4 days ago
Delta
Tue, 11 Nov - Tue, 18 Nov
BOS
Boston
SEA
Seattle
NZ$462 Return, found 4 days ago
NZ$462
Return
found 4 days ago
Select Delta flight, departing Tue, 11 Nov from Boston to Seattle, returning Tue, 18 Nov, priced at NZ$462 found 4 days ago
American Airlines
Tue, 11 Nov - Tue, 18 Nov
BOS
Boston
SEA
Seattle
NZ$470 Return, found 4 days ago
NZ$470
Return
found 4 days ago
Select American Airlines flight, departing Tue, 11 Nov from Boston to Seattle, returning Tue, 18 Nov, priced at NZ$470 found 4 days ago
Delta
Tue, 11 Nov - Tue, 18 Nov
BOS
Boston
SEA
Seattle
NZ$471 Return, found 4 days ago
NZ$471
Return
found 4 days ago
Select Delta flight, departing Tue, 11 Nov from Boston to Seattle, returning Tue, 18 Nov, priced at NZ$471 found 4 days ago
United
Tue, 11 Nov - Tue, 18 Nov
BOS
Boston
SEA
Seattle
NZ$558 Return, found 4 days ago
NZ$558
Return
found 4 days ago
Select United flight, departing Tue, 11 Nov from Boston to Seattle, returning Tue, 18 Nov, priced at NZ$558 found 4 days ago

Frequently asked questions

How much is a flight from Logan Intl. Airport to SEA?
If you're planning on travelling between Logan Intl. Airport (BOS) and Sea-Tac Airport, round-trip journeys start from NZ$341. This price is based on fares available within the last 7 days on Expedia for flights departing within the next year, so don't delay. Book today and save yourself 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 BOS to SEA?
The majority of flights can be cancelled online, but whether you are charged a fee differs between airlines. If you do have to cancel your trip, follow the instructions in the Customer Service Portal.
How do I find cheap flights from Logan Intl. Airport to SEA 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 Logan Intl. Airport (BOS) to Seattle - Tacoma Intl. Airport (SEA) flights, you'll see a "no change fees" filter for you to select.
How far is the flight from Logan Intl. Airport to Sea-Tac Airport?
With around 4 000 kilometres separating Boston and SeaTac, your flight will be a long one. Pack wisely to make your time on board more comfortable. Things like a sleep mask and some noise-cancelling headphones can make all the difference.
Which airlines fly direct from BOS to Seattle - Tacoma Intl. Airport (SEA)?
With 117 flights every month operating from Logan Intl. Airport to Sea-Tac Airport, Alaska Airlines (AS) is a popular choice. Love some more options? Check out the airfares with Delta Air Lines (DL). This carrier offers 78 flights a month between these airports.
Are Logan Intl. Airport to Sea-Tac Airport flight tickets cheaper when they're purchased at the last minute?
Late planners can sometimes pick up a bargain, with some super cheap fares from Logan Intl. Airport to Sea-Tac Airport arising a few weeks prior to the departure date. If you'd rather book ahead of time, Expedia compares and updates all the best flight deals continuously — as early as a year in advance in some cases. It does depend on the carrier though, as not all airlines advertise prices that far in advance.

Travel information

Travel information

Origin airport
Logan Intl.
Destination airport
Seattle - Tacoma Intl.
Return price
NZ$340
Distance
3980 km
Average flight time
3 hours 45 mins

Book with confidence

Book with confidence

Perfect flights from Boston to Seattle

Embark on an unforgettable journey without breaking the bank with Expedia's incredible deals on cheap flights from Boston to Seattle. Whether you're aching for a romantic escape with your partner, craving an adventurous solo expedition, or yearning to immerse yourself in the local history and culture, we've got you covered.
 
Picture yourself strolling through the streets of , surrounded by breathtaking architecture and absorbing the vibrant atmosphere of this captivating city. Indulge in the mouth-watering local specialties, from tantalizing street food to exquisite fine dining. With Expedia, you can experience all of this and more, without sacrificing your budget.
 
Our flexible Logan Intl. to Seattle - Tacoma Intl. ticket options cater to your travel preferences, with incredible one-way fares from NZ$171 and roundtrip prices from NZ$341. Whether you're planning a short city break or a longer adventure, our dynamic pricing ensures that you find the best deals for your journey.
 
But the magic doesn't stop there. Expedia offers a range of partner services to enhance your trip. Rent a car at Seattle - Tacoma Intl. and explore and its surrounding areas at your own pace. Discover hidden gems off the beaten path, and create unforgettable memories. We also provide a handpicked selection of accommodations, from charming bed and breakfasts to luxury hotels, ensuring that you have a comfortable and memorable stay.
 
Planning your next great adventure is a breeze with Expedia. Our user-friendly platform, unbeatable prices, and round-the-clock customer support are designed to make your travel experience seamless and stress-free. So, why wait? Book your to travel arrangements today and embark on the journey of a lifetime in Seattle.
Perfect flights from Boston to Seattle

Explore a world of travel with Expedia

Explore a world of travel with Expedia

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