Cheap Flights from Baltimore (BWI) to Seattle (SEA)

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Cheap Flights from Baltimore (BWI) 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
Wed., 5 Mar. - Mon., 10 Mar.
BWI
Baltimore
SEA
Seattle
AU$333 Return, found 14 hours ago
AU$333
Return
found 14 hours ago
Select Delta flight, departing Wed., 5 Mar. from Baltimore to Seattle, returning Mon., 10 Mar., priced at AU$333 found 14 hours ago
Alaska Airlines
Wed., 5 Mar. - Mon., 10 Mar.
BWI
Baltimore
SEA
Seattle
AU$389 Return, found 14 hours ago
AU$389
Return
found 14 hours ago
Select Alaska Airlines flight, departing Wed., 5 Mar. from Baltimore to Seattle, returning Mon., 10 Mar., priced at AU$389 found 14 hours ago
Alaska Airlines
Mon., 10 Mar. - Mon., 17 Mar.
BWI
Baltimore
SEA
Seattle
AU$404 Return, found 6 days ago
AU$404
Return
found 6 days ago
Select Alaska Airlines flight, departing Mon., 10 Mar. from Baltimore to Seattle, returning Mon., 17 Mar., priced at AU$404 found 6 days ago
United
Wed., 5 Mar. - Mon., 10 Mar.
BWI
Baltimore
SEA
Seattle
AU$406 Return, found 14 hours ago
AU$406
Return
found 14 hours ago
Select United flight, departing Wed., 5 Mar. from Baltimore to Seattle, returning Mon., 10 Mar., priced at AU$406 found 14 hours ago
Alaska Airlines
Sun., 2 Mar. - Wed., 5 Mar.
BWI
Baltimore
SEA
Seattle
AU$446 Return, found 5 days ago
AU$446
Return
found 5 days ago
Select Alaska Airlines flight, departing Sun., 2 Mar. from Baltimore to Seattle, returning Wed., 5 Mar., priced at AU$446 found 5 days ago
Delta
Mon., 10 Mar. - Thu., 13 Mar.
BWI
Baltimore
SEA
Seattle
AU$453 Return, found 2 days ago
AU$453
Return
found 2 days ago
Select Delta flight, departing Mon., 10 Mar. from Baltimore to Seattle, returning Thu., 13 Mar., priced at AU$453 found 2 days ago
Delta
Wed., 5 Mar. - Mon., 10 Mar.
BWI
Baltimore
SEA
Seattle
AU$455 Return, found 14 hours ago
AU$455
Return
found 14 hours ago
Select Delta flight, departing Wed., 5 Mar. from Baltimore to Seattle, returning Mon., 10 Mar., priced at AU$455 found 14 hours ago
United
Mon., 10 Mar. - Mon., 17 Mar.
BWI
Baltimore
SEA
Seattle
AU$467 Return, found 6 days ago
AU$467
Return
found 6 days ago
Select United flight, departing Mon., 10 Mar. from Baltimore to Seattle, returning Mon., 17 Mar., priced at AU$467 found 6 days ago
Alaska Airlines
Wed., 5 Mar. - Mon., 10 Mar.
BWI
Baltimore
SEA
Seattle
AU$470 Return, found 14 hours ago
AU$470
Return
found 14 hours ago
Select Alaska Airlines flight, departing Wed., 5 Mar. from Baltimore to Seattle, returning Mon., 10 Mar., priced at AU$470 found 14 hours ago
American Airlines
Mon., 3 Mar. - Sat., 8 Mar.
BWI
Baltimore
SEA
Seattle
AU$505 Return, found 5 days ago
AU$505
Return
found 5 days ago
Select American Airlines flight, departing Mon., 3 Mar. from Baltimore to Seattle, returning Sat., 8 Mar., priced at AU$505 found 5 days ago
Flight from Baltimore to Seattle route information
Origin airport
Baltimore Washington Intl. Thurgood Marshall
Destination airport
Seattle - Tacoma Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, United
Return price
AU$332
Distance
3725 km

Your quick guide to flights from Baltimore to Seattle

Pick up great flights from Baltimore to Seattle

With Expedia, you have your pick of flights a day with 20 airlines covering flights from Baltimore to Seattle. Whether you’re on a business trip, a family holiday or a luxury break, just enter your travel dates, hit search then check out your choice of flights. Select from return, one way or multi-city flights, and use the advance search tool if you want a direct or refundable flight. You can narrow your search to show you just your preferred cabin class and airline, too. It’s all easy. You can book direct flights from Baltimore to Seattle that take around hours.

Find cheap flights from Baltimore to Seattle

From the great flight deals with prices currently ranging from AU$333 to AU$505, you can choose to see the cheapest flights first. Generally, you can book the cheapest flights from Baltimore to Seattle around 4 to 6 weeks in advance. If your travel dates are flexible, try to avoid weekends and peak seasons – when you are more likely to grab the lowest prices. Even last minute, there are some impressive deals. The cheapest time to fly to Seattle is normally in March.

Reasons to book your flight from Baltimore to Seattle with Expedia

Expedia makes it easy to find, book, and travel, with everything you need all in one place. When you enter your travel details, find fantastic deals just for you on flight tickets from Baltimore to Seattle across all the main airline carriers, so you can save time, dollars, and hassle finding the perfect flight. If you think your plans could change, choose refundable flights so any changes won’t cost you more. Book your flight to Seattle right now and, if you join Expedia Rewards, you earn points this time and every time you travel with Expedia.

Frequently asked questions

How much is a flight from BWI Airport to Sea-Tac Airport?
Within the past 7 days on Expedia, for flights departing within the next year, the lowest price advertised for a round-trip journey from BWI to Sea-Tac Airport was AU$333. Fares this good don’t stick around for long, so make sure you book yours today. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from BWI Marshall to Sea-Tac Airport?
The majority of flights can be conveniently cancelled online, but whether or not you are charged a fee varies between airlines. If you do need to cancel your trip, follow the easy instructions in the Customer Service Portal.
How do I find cheap flights from BWI 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 BWI Airport 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 BWI Airport to Seattle - Tacoma Intl. Airport (SEA)?
The flight distance between BWI Marshall and Sea-Tac Airport is 3 800 kilometres. Pack yourself a drink, some snacks and a few good podcasts. Keep yourself entertained and the hours will fly by.
Which airlines fly direct from BWI Marshall to SEA?
Flying straight from BWI Airport to Sea-Tac Airport is a cinch with Alaska Airlines (AS). This top airline operates 30 flights every month.
Are BWI Marshall to Seattle - Tacoma Intl. Airport (SEA) flight tickets cheaper when they're purchased at the last minute?
Booking your trip from BWI to Seattle - Tacoma Intl. Airport (SEA) at the last minute could be your ticket to an awesome deal. However, it might cost you a whole lot more! If you’d prefer to err on the side of caution, book well ahead of your departure date. In fact, Expedia has some of the biggest bargains up to a year in advance. If your preferred carrier hasn’t released tickets yet, check back regularly as deals are updated on Expedia all the time.
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