$464 Cheap Flights from Baltimore (BWI) to Seattle (BFI)

View $464 flight on Tue, Sep 30, 2025Opens in a new window

Popular airlines from Baltimore Washington Intl. Airport (BWI) to Seattle, WA (BFI-Boeing Field)

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Cheap Flights from Baltimore to Seattle (BWI-BFI)

Prices were available within the past 7 days and start at $464 for one-way flights and $1,060 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Alaska Airlines
Tue, Sep 23 - Tue, Sep 30
BWI
Baltimore
BFI
Seattle
$1,060 Roundtrip, found 1 day ago
$1,060
Roundtrip
found 1 day ago
Select Alaska Airlines flight, departing Tue, Sep 23 from Baltimore to Seattle, returning Tue, Sep 30, priced at $1,060 found 1 day ago

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 $286
SEA
Seattle - Tacoma Intl.
Cheapest
Average driving time to city center20 min
Flights from $286
Flights from Baltimore (BWI) to Seattle (BFI)
Origin airport
Baltimore Washington Intl. Thurgood Marshall
Destination airport
Boeing Field
Roundtrip price
$1,060
Distance
2328 mi

Baltimore to Seattle Flights

The cheapest times to fly from Baltimore 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 Baltimore to Seattle are during the month of September. You can find some of the cheapest flights from Baltimore to Seattle with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Baltimore to Seattle

Sunday is one of the best days to book for cheap flights from Baltimore 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 Baltimore 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 Baltimore to Seattle in 2025. You can also book with separate airlines for your outbound and return journeys, from $464 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 Baltimore 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 Baltimore 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.

 

Frequently asked questions

How much does a flight from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to Boeing Field Airport (BFI) cost?
Lock in a cheap one-way flight from $464 or cheap return flight from $1,060 from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to Boeing Field Airport (BFI) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight deals on this route.
What is the cheapest month to fly from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to Boeing Field Airport (BFI)?
September is the cheapest month to fly from BWI to BFI. Avoiding peak travel times is often the key to scoring lower fares.
What is the cheapest airline that flies from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to Boeing Field Airport (BFI)?
To find the cheapest airline flying from BWI to BFI, use Expedia's filter tool. Customize your search based on what's important to you, such as preferred carriers and seat class. You can then sort your results by "Price (lowest to highest)" to see the most affordable options first.
How many flights per day from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to Boeing Field Airport (BFI)?
You'll need to take a flight with a layover if you're traveling from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to Boeing Field Airport (BFI). There are no daily direct flights on this route. However, simply filter your search to include one or more stops to find the best option for your trip.
What day of the week has the most flights from BWI to BFI?
Friday is typically the busiest day for flights, while Tuesday is often the quietest.* Keep in mind that flight schedules can change based on a number of factors, such as the airline 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 Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to Boeing Field Airport (BFI)?
To arrive at Boeing Field Airport (BFI) on schedule, choose a flight that leaves Baltimore Washington Intl. Thurgood Marshall Airport (BWI) 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 Baltimore Washington Intl. Thurgood Marshall Airport (BWI)?
Compare your flight options from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to Seattle - Tacoma Intl. Airport (SEA). This is the only airport in Seattle you can land at if you're taking a direct flight.
Is it cheaper to buy a plane ticket from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to Boeing Field Airport (BFI) last-minute?
Booking your flight from BWI to BFI just before your journey is usually more expensive. However, if you're flexible with your schedule, you could snag a cheap last-minute fare.
Is it cheaper to book a BWI to BFI flight and hotel package?
Compared with arranging hotels and flights separately, booking a BWI to BFI flight and hotel package with Expedia could result in significant savings. What's more, having it all in one place will take the hassle out of planning your trip. Just pick your flights and choose from our wide range of hotels, then personalize your trip with other add-ons like tours, activities and car rentals.
Can I cancel or change the date of my flight from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to Boeing Field Airport (BFI)?
Typically, you're able to reschedule or cancel your BWI to BFI flight. However, additional fees may apply, especially if you made your booking more than 24 hours ago. Check your itinerary for the airline's fees and guidelines on flight changes, or if you need more information, visit our Customer Service portal.

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*Available to One Key members.