CA $134 Cheap Flights from Seattle (SEA) to Boston (BOS)

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

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

Prices were available within the past 7 days and start at CA $134 for one-way flights and CA $267 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Alaska Airlines
Delta
Delta
Delta
Alaska Airlines
Delta
Delta
American Airlines
JetBlue Airways
Hawaiian Airlines

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Alternative airports near Boston

Prices were available within the past 7 days. Prices and availability are subject to change.

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

March is typically the cheapest month to fly

From CA $220 - CA $432 per traveller.

Frequently asked questions

How much is a flight from Sea-Tac Airport to Logan Intl. Airport (BOS)?
Based on fares advertised within the last 7 days on Expedia for flights departing within the next year, round-trip flights from Seattle - Tacoma Intl. Airport (SEA) to Logan Intl. Airport (BOS) start from CA $267. Make your booking today to get the best price for your next big adventure. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from Sea-Tac Airport to BOS?
Each air carrier has a different set of terms and conditions. If you decide to cancel your vacation, visit our Customer Service Portal.
How do I find cheap flights from SEA to BOS that have flexible change policies?
Flights from Seattle - Tacoma Intl. Airport (SEA) to Logan Intl. Airport offering flexible change policies are available from several carriers. Simply use our "No change fees" filter while searching. You'll only need to cover the fare difference, with no additional fees to worry about.
How many hours is the flight from Sea-Tac Airport to Logan Intl. Airport (BOS)?
It takes about 5 hours and 22 minutes to get from SEA to BOS. But with some music and a magazine or two, the hours will pass by quicker.
How far is the flight from SEA to Logan Intl. Airport?
The distance is around 4,000 kilometres, so pack your carry-on luggage with all the items you need to make the long journey comfortable. Wondering what to take on board your SeaTac to Boston flight? A travel pillow, earplugs and a sleep mask are a few essentials.
Which airlines fly direct from Sea-Tac Airport to Logan Intl. Airport?
One airline that operates on the route from Seattle - Tacoma Intl. Airport (SEA) to BOS is Delta (DL). It offers 60 flights monthly. After some more options? Have a look at the ticket prices from Alaska Airlines (AS). This carrier offers 52 flights a month between these destinations.
Are Sea-Tac Airport to Logan Intl. Airport (BOS) flight tickets cheaper when they're purchased at the last minute?
It is possible to pick up an amazing last-minute deal from Sea-Tac Airport to BOS, but there's no guarantee. As many airlines release prices up to a year in advance, it's worth keeping an eye on fares early and being ready to pounce when you see a bargain. Expedia compares air carrier prices and updates flight deals regularly, so you can be sure you're always seeing the latest offers.

Travel information

Origin airport
Seattle - Tacoma Intl.
Destination airport
Logan Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, Hawaiian Airlines, JetBlue Airways, Sun Country Airlines, United
Roundtrip price
CA $260
Distance
3980 km
Average flight time
8 hours 22 mins

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