$956 Cheap Flights from Boston (BOS) to Seattle (BFI)

View $956 flight on Sat, Jun 20, 2026Opens in a new window

Popular airlines from Logan International Airport (BOS) to Seattle, WA (BFI-Boeing Field)

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Cheap Flights from Boston to Seattle (BOS-BFI)

Prices were available within the past 7 days and start at $956 for one-way flights and for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

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Alternative airports near Seattle

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

Select flight to Seattle - Tacoma Intl. SEA. Cheapest option available. Average driving time to city center is 20 minutes. Flights from $392
SEA
Seattle - Tacoma Intl.
Cheapest
Average driving time to city center20 min
Flights from $392
Select flight to Snohomish County - Paine Field PAE. Average driving time to city center is 29 minutes. Flights from $458
PAE
Snohomish County - Paine Field
Average driving time to city center29 min
Flights from $458

Frequently asked questions

How much does a flight from Logan Intl. Airport (BOS) to Boeing Field Airport (BFI) cost?
Secure a cheap one-way flight from $956 or cheap return flight from Logan Intl. Airport (BOS) to Boeing Field Airport (BFI) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight offers on this route.
What is the cheapest month to fly from Logan Intl. Airport (BOS) to Boeing Field Airport (BFI)?
Flying in can help you save, as it's the cheapest month for flights between BOS and BFI. You'll usually find the lowest prices during off-peak months.
What is the cheapest airline that flies from Logan Intl. Airport (BOS) to Boeing Field Airport (BFI)?
Expedia's filter tool lets you easily compare different airlines, flight durations and fares all in one place. Select your preferences, then sort by "Price (lowest to highest)" to find out which carrier offers the cheapest BOS to BFI flight.
How many flights per day from Logan Intl. Airport (BOS) to Boeing Field Airport (BFI)?
There aren't any daily nonstop flights available from Logan Intl. Airport (BOS) to Boeing Field Airport (BFI). But you can opt for flights with layovers. Filter your search results on Expedia to include one or two stops, and you'll be soaring above the clouds in no time.
What day of the week has the most flights from BOS to BFI?
Friday is usually the busiest day for flights, while Tuesday is often the quietest.* Just remember that flight schedules can vary depending on a range of factors, including the carrier and season.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Logan Intl. Airport (BOS) to Boeing Field Airport (BFI)?
To reach Boeing Field Airport (BFI) without delays, book a flight that takes off from Logan Intl. Airport (BOS) before 3 PM. The likelihood of cancellations is 22% higher, on average, for departures after this hour.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
What airports do you fly into for Seattle from Logan Intl. Airport (BOS)?
If you're boarding a direct flight from Logan Intl. Airport (BOS) to Seattle, Seattle - Tacoma Intl. Airport (SEA) is the only airport you can touch down at.
Is it cheaper to buy a plane ticket from Logan Intl. Airport (BOS) to Boeing Field Airport (BFI) last-minute?
Booking your flight from BOS to BFI shortly before your trip is usually more expensive. However, if there's some wiggle room with your departure times and dates, you could score a cheap last-minute fare.
Is it cheaper to book a BOS to BFI flight and hotel package?
Compared with arranging hotels and flights separately, booking a BOS to BFI flight and hotel package with Expedia could lead to significant savings. Better still, having it all in one place will take the hassle out of planning your trip. Just secure your flights and choose from our wide range of hotels, then tailor your trip with other add-ons like activities, tours and car rentals.
Can I cancel or change the date of my flight from Logan Intl. Airport (BOS) to Boeing Field Airport (BFI)?
In most instances, you can cancel or modify your BOS to BFI flight. However, there may be additional fees, especially if you booked over 24 hours ago. Check your itinerary for the airline's fees and guidelines on flight changes, or if you need more details, head to our Customer Service portal.

Travel information

Origin airport
Logan Intl.
Destination airport
Boeing Field
Distance
2486 mi

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Boston to Seattle Flights

The cheapest times to fly from Boston to Seattle

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Boston to Seattle are during the month of . You can find some of the cheapest flights from Boston to Seattle with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Boston to Seattle

Sunday is one of the best days to book for cheap flights from Boston to Seattle: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Boston to Seattle

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Boston to Seattle in 2026. You can also book with separate airlines for your outbound and return journeys, from $956 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Boston to Seattle flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Boston to Seattle airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Boston to Seattle Flights

*Flight schedules are subject to change.

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