RM684 Cheap Flights from Baltimore (BWI) to Seattle (SEA)

View RM684 flight on Thu, 23 Apr 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 RM684 for one-way flights and RM1,223 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Thu, 23 Apr - Wed, 29 Apr
BWI
Baltimore
SEA
Seattle
RM1,223 Return, found 5 days ago
RM1,223
Return
found 5 days ago
Select United flight, departing Thu, 23 Apr from Baltimore to Seattle, returning Wed, 29 Apr, priced at RM1,223 found 5 days ago
United
Thu, 23 Apr - Wed, 29 Apr
BWI
Baltimore
SEA
Seattle
RM1,333 Return, found 5 days ago
RM1,333
Return
found 5 days ago
Select United flight, departing Thu, 23 Apr from Baltimore to Seattle, returning Wed, 29 Apr, priced at RM1,333 found 5 days ago
United
Thu, 23 Apr - Wed, 29 Apr
BWI
Baltimore
SEA
Seattle
RM1,368 Return, found 5 days ago
RM1,368
Return
found 5 days ago
Select United flight, departing Thu, 23 Apr from Baltimore to Seattle, returning Wed, 29 Apr, priced at RM1,368 found 5 days ago
American Airlines
Thu, 23 Apr - Wed, 29 Apr
BWI
Baltimore
SEA
Seattle
RM1,380 Return, found 5 days ago
RM1,380
Return
found 5 days ago
Select American Airlines flight, departing Thu, 23 Apr from Baltimore to Seattle, returning Wed, 29 Apr, priced at RM1,380 found 5 days ago
United
Thu, 23 Apr - Wed, 29 Apr
BWI
Baltimore
SEA
Seattle
RM1,432 Return, found 5 days ago
RM1,432
Return
found 5 days ago
Select United flight, departing Thu, 23 Apr from Baltimore to Seattle, returning Wed, 29 Apr, priced at RM1,432 found 5 days ago
United
Thu, 23 Apr - Wed, 29 Apr
BWI
Baltimore
SEA
Seattle
RM1,460 Return, found 5 days ago
RM1,460
Return
found 5 days ago
Select United flight, departing Thu, 23 Apr from Baltimore to Seattle, returning Wed, 29 Apr, priced at RM1,460 found 5 days ago
American Airlines
Thu, 23 Apr - Wed, 29 Apr
BWI
Baltimore
SEA
Seattle
RM1,490 Return, found 5 days ago
RM1,490
Return
found 5 days ago
Select American Airlines flight, departing Thu, 23 Apr from Baltimore to Seattle, returning Wed, 29 Apr, priced at RM1,490 found 5 days ago
American Airlines
Thu, 23 Apr - Wed, 29 Apr
BWI
Baltimore
SEA
Seattle
RM1,526 Return, found 5 days ago
RM1,526
Return
found 5 days ago
Select American Airlines flight, departing Thu, 23 Apr from Baltimore to Seattle, returning Wed, 29 Apr, priced at RM1,526 found 5 days ago
United
Thu, 23 Apr - Wed, 29 Apr
BWI
Baltimore
SEA
Seattle
RM1,570 Return, found 5 days ago
RM1,570
Return
found 5 days ago
Select United flight, departing Thu, 23 Apr from Baltimore to Seattle, returning Wed, 29 Apr, priced at RM1,570 found 5 days ago
Delta
Thu, 23 Apr - Wed, 29 Apr
BWI
Baltimore
SEA
Seattle
RM2,322 Return, found 5 days ago
RM2,322
Return
found 5 days ago
Select Delta flight, departing Thu, 23 Apr from Baltimore to Seattle, returning Wed, 29 Apr, priced at RM2,322 found 5 days ago

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

February is typically the cheapest month to fly

From RM 683 - RM 1,142 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 RM1,223. 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
RM1,223
Distance
3725 km
Average flight time
5 hours 54 mins

Book with confidence

Perfect flights from Baltimore to Seattle

Your Journey from Baltimore to Seattle

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Choosing Your Ideal Flight

With Expedia, you have access to a wide range of airlines, including United, American Airlines, Delta. Our selection of flights from Baltimore Washington Intl. Thurgood Marshall to Seattle - Tacoma Intl. caters to every traveler's requirements, ensuring your journey aligns with your schedule. With options from 20 airlines, you're bound to find the perfect flight.
 

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Experience the joy of finding cheap flights from Baltimore Washington Intl. Thurgood Marshall to Seattle - Tacoma Intl. that fit your budget. Keep an eye out for our special deals and discounts, and check our flexible one-way fares from RM684 and roundtrip prices from RM1,223*.
 

Pre-Flight Essentials

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Experience the Vibrant Seattle

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With Expedia, your adventure extends beyond the flight. Explore Seattle at your own pace by renting a car or booking a hotel. Discover hidden gems off the beaten path and create unforgettable memories.
 

Book Your Flight from Baltimore to Seattle with Confidence

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*Note: Prices may vary based on availability and are subject to change.
Perfect flights from Baltimore to Seattle

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