CA $123 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 $123 for one-way flights and CA $245 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

JetBlue Airways
Alaska Airlines
JetBlue Airways
American Airlines
JetBlue Airways
American Airlines
Hawaiian Airlines
JetBlue Airways
American Airlines
United

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

October is typically the cheapest month to fly

From CA $217 - CA $354 per traveller.

Graph displaying average flight prices per month

Flight from Seattle to Boston (SEA - BOS) route information
Origin airport
Seattle - Tacoma Intl.
Destination airport
Logan Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, JetBlue Airways, United
Roundtrip price
CA $244
Distance
3980 km
Average flight time
8 hours 28 mins

Seattle to Boston Flights

The easy way to book your flights from Seattle to Boston 

With Expedia, it’s simple to find and book flights to Boston from Seattle whether you’re traveling for business or pleasure. Enter your travel dates, hit search, and choose your flight from 20 airlines that cover this route. There are nonstop flights to Logan Intl., too.  

Choose your preferred carrier and cabin class with the advanced search tool and select your ideal departure time. Then, if you want, you can see just nonstop or refundable flights. And if you’re traveling last minute, just enter the date to check out flights from Seattle to Boston today, tomorrow, or this week.  

 

Save dollars with cheap flights from Seattle - Tacoma Intl., SEA to Logan Intl., BOS 

Sort your search results by price to find great deals on your flight from Seattle to Boston—you get all your cheapest options first. Grab yourself a bargain now—the lowest price on flights to Boston from Seattle currently is just CA $245 rising to CA $431.  

Here are more money-saving tips: 

  • Fly in September when flight prices are normally at their lowest 
  • Book about a month to 6 weeks before you travel for the best prices to Boston  
  • Avoid peak season and weekends when flights can cost more
  • Early morning and late-night flights are sometimes cheaper, so try varying your travel times 
  • One surefire way to save money on your flight is to book your flight and hotel together with Expedia. Sometimes, the savings are so large that the flight is basically free! 

 

Reasons to choose Expedia for your flight to Boston from Seattle 

Whatever your destination, budget, or reason to travel, in just one quick search, you can choose from loads of flights, airlines, and cabin classes. The filters make it quick and easy to find your ideal flights, and if you choose one of the flexible options, you won’t be charged to change your flight. So book your flight to Boston with Expedia today.

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 $245. 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.

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Boston nearby Airports

Providence

Seattle nearby Airports

Seattle Paine Field Intl. Airport

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