RM598 Cheap Flights from Washington (DCA) to Seattle (SEA)

View RM598 flight on Mon, 15 Jun 2026Opens in a new window

Popular airlines from Ronald Reagan Washington National Airport (DCA) to Seattle-Tacoma International Airport (SEA)

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Cheap Flights from Washington to Seattle (DCA-SEA)

Prices were available within the past 7 days and start at RM598 for one-way flights and RM1,195 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Mon, 15 Jun - Wed, 17 Jun
DCA
Washington
SEA
Seattle
RM1,195 Return, just found
RM1,195
Return
just found
Select Delta flight, departing Mon, 15 Jun from Washington to Seattle, returning Wed, 17 Jun, priced at RM1,195 just found
Delta
Mon, 15 Jun - Tue, 16 Jun
DCA
Washington
SEA
Seattle
RM1,401 Return, just found
RM1,401
Return
just found
Select Delta flight, departing Mon, 15 Jun from Washington to Seattle, returning Tue, 16 Jun, priced at RM1,401 just found
Delta
Mon, 15 Jun - Sat, 20 Jun
DCA
Washington
SEA
Seattle
RM1,562 Return, just found
RM1,562
Return
just found
Select Delta flight, departing Mon, 15 Jun from Washington to Seattle, returning Sat, 20 Jun, priced at RM1,562 just found
American Airlines
Wed, 17 Jun - Wed, 24 Jun
DCA
Washington
SEA
Seattle
RM1,580 Return, just found
RM1,580
Return
just found
Select American Airlines flight, departing Wed, 17 Jun from Washington to Seattle, returning Wed, 24 Jun, priced at RM1,580 just found
Delta
Mon, 15 Jun - Tue, 23 Jun
DCA
Washington
SEA
Seattle
RM1,640 Return, just found
RM1,640
Return
just found
Select Delta flight, departing Mon, 15 Jun from Washington to Seattle, returning Tue, 23 Jun, priced at RM1,640 just found
American Airlines
Wed, 17 Jun - Tue, 23 Jun
DCA
Washington
SEA
Seattle
RM1,801 Return, just found
RM1,801
Return
just found
Select American Airlines flight, departing Wed, 17 Jun from Washington to Seattle, returning Tue, 23 Jun, priced at RM1,801 just found
Delta
Sun, 14 Jun - Wed, 24 Jun
DCA
Washington
SEA
Seattle
RM1,809 Return, just found
RM1,809
Return
just found
Select Delta flight, departing Sun, 14 Jun from Washington to Seattle, returning Wed, 24 Jun, priced at RM1,809 just found
Delta
Sun, 14 Jun - Mon, 15 Jun
DCA
Washington
SEA
Seattle
RM1,845 Return, just found
RM1,845
Return
just found
Select Delta flight, departing Sun, 14 Jun from Washington to Seattle, returning Mon, 15 Jun, priced at RM1,845 just found
Delta
Fri, 19 Jun - Sat, 20 Jun
DCA
Washington
SEA
Seattle
RM2,008 Return, just found
RM2,008
Return
just found
Select Delta flight, departing Fri, 19 Jun from Washington to Seattle, returning Sat, 20 Jun, priced at RM2,008 just found
United
Wed, 17 Jun - Thu, 18 Jun
DCA
Washington
SEA
Seattle
RM2,452 Return, just found
RM2,452
Return
just found
Select United flight, departing Wed, 17 Jun from Washington to Seattle, returning Thu, 18 Jun, priced at RM2,452 just found

Frequently asked questions

How much is a flight from Ronald Reagan Washington National Airport (DCA) to Seattle - Tacoma Intl. Airport (SEA)?
Round-trip flights from National Airport to Sea-Tac Airport start from RM1,195. This price is based on fares advertised within the last 7 days on Expedia for flights departing within the next year — book today to avoid missing out. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from National Airport to Sea-Tac Airport?
The majority of flights can be conveniently cancelled online, but whether or not you incur a fee varies between airlines. If you do have to cancel your getaway, follow the easy instructions in the Customer Service Portal.
How do I find cheap flights from Ronald Reagan Washington National Airport (DCA) to Sea-Tac Airport 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 Ronald Reagan Washington National Airport (DCA) to Sea-Tac Airport flights, you'll see a "no change fees" filter for you to select.
How far is the flight from DCA to Sea-Tac Airport?
It's around 3,700 kilometres from Ronald Reagan Washington National Airport (DCA) to Seattle - Tacoma Intl. Airport (SEA), so you'll be strapped into your seat for a while. Keep yourself entertained with things like your e-reader or the latest bestseller.
Which airlines fly direct from National Airport to Seattle - Tacoma Intl. Airport (SEA)?
Check out the fares with Alaska Airlines (AS) if you want to fly straight from Ronald Reagan Washington National Airport (DCA) to Sea-Tac Airport. This popular carrier operates 60 flights monthly, so you're sure to find one that suits your schedule.
Are Ronald Reagan Washington National Airport (DCA) to Seattle - Tacoma Intl. Airport (SEA) flight tickets cheaper when they're purchased at the last minute?
Late planners can sometimes score a bargain, with some of the cheapest airfares from Ronald Reagan Washington National Airport (DCA) to Seattle - Tacoma Intl. Airport (SEA) showing up a few weeks before the date of departure. If you'd rather book ahead, Expedia compares and updates the best flight deals continually — as early as a year in advance in some cases. It depends on the carrier though, as not all airlines advertise prices that far in advance.

Travel information

0
Origin airport
Ronald Reagan Washington National
Destination airport
Seattle - Tacoma Intl.
Return price
RM1,195
Distance
3715 km

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Perfect flights from Washington to Seattle

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*Note: Prices may vary based on availability and are subject to change.
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