S$139 Cheap Flights from Baltimore to Seattle

View S$139 flight on Tue, 9 Jun, 2026Opens in a new window

Popular airlines from Baltimore Washington Intl. Airport (BWI) to Seattle-Tacoma International Airport (SEA)

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Cheap Flights from Baltimore to Seattle (BWI-SEA)

Prices were available within the past 7 days and start at S$139 for one-way flights and S$621 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Sat, 18 Apr - Wed, 22 Apr
BWI
Baltimore
SEA
Seattle
S$621 Return, found 6 days ago
S$621
Return
found 6 days ago
Select Delta flight, departing Sat, 18 Apr from Baltimore to Seattle, returning Wed, 22 Apr, priced at S$621 found 6 days ago
American Airlines
Sat, 18 Apr - Wed, 22 Apr
BWI
Baltimore
SEA
Seattle
S$649 Return, found 6 days ago
S$649
Return
found 6 days ago
Select American Airlines flight, departing Sat, 18 Apr from Baltimore to Seattle, returning Wed, 22 Apr, priced at S$649 found 6 days ago
Delta
Sat, 18 Apr - Wed, 22 Apr
BWI
Baltimore
SEA
Seattle
S$655 Return, found 6 days ago
S$655
Return
found 6 days ago
Select Delta flight, departing Sat, 18 Apr from Baltimore to Seattle, returning Wed, 22 Apr, priced at S$655 found 6 days ago
United
Sat, 18 Apr - Wed, 22 Apr
BWI
Baltimore
SEA
Seattle
S$656 Return, found 6 days ago
S$656
Return
found 6 days ago
Select United flight, departing Sat, 18 Apr from Baltimore to Seattle, returning Wed, 22 Apr, priced at S$656 found 6 days ago
American Airlines
Sat, 18 Apr - Wed, 22 Apr
BWI
Baltimore
SEA
Seattle
S$683 Return, found 6 days ago
S$683
Return
found 6 days ago
Select American Airlines flight, departing Sat, 18 Apr from Baltimore to Seattle, returning Wed, 22 Apr, priced at S$683 found 6 days ago
Delta
Sat, 18 Apr - Wed, 22 Apr
BWI
Baltimore
SEA
Seattle
S$686 Return, found 6 days ago
S$686
Return
found 6 days ago
Select Delta flight, departing Sat, 18 Apr from Baltimore to Seattle, returning Wed, 22 Apr, priced at S$686 found 6 days ago
United
Sat, 18 Apr - Wed, 22 Apr
BWI
Baltimore
SEA
Seattle
S$689 Return, found 6 days ago
S$689
Return
found 6 days ago
Select United flight, departing Sat, 18 Apr from Baltimore to Seattle, returning Wed, 22 Apr, priced at S$689 found 6 days ago
Delta
Sat, 18 Apr - Wed, 22 Apr
BWI
Baltimore
SEA
Seattle
S$692 Return, found 6 days ago
S$692
Return
found 6 days ago
Select Delta flight, departing Sat, 18 Apr from Baltimore to Seattle, returning Wed, 22 Apr, priced at S$692 found 6 days ago
United
Sat, 18 Apr - Wed, 22 Apr
BWI
Baltimore
SEA
Seattle
S$719 Return, found 6 days ago
S$719
Return
found 6 days ago
Select United flight, departing Sat, 18 Apr from Baltimore to Seattle, returning Wed, 22 Apr, priced at S$719 found 6 days ago
Delta
Sat, 18 Apr - Wed, 22 Apr
BWI
Baltimore
SEA
Seattle
S$720 Return, found 6 days ago
S$720
Return
found 6 days ago
Select Delta flight, departing Sat, 18 Apr from Baltimore to Seattle, returning Wed, 22 Apr, priced at S$720 found 6 days ago

Find the cheapest month to fly from Baltimore (BWI) to Seattle (SEA)

April is typically the cheapest month to fly

From S$198 - S$538 per traveller.

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 S$621. 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.

Travel information

Origin airport
Baltimore Washington Intl. Thurgood Marshall
Destination airport
Seattle - Tacoma Intl.
Return price
S$621
Distance
3725 km
Average flight time
4 hours 51 mins

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