RM668 Cheap Flights from Washington (DCA) to Seattle (SEA)

View RM668 flight on Thu, 4 Dec 2025Opens 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 RM668 for one-way flights and RM1,008 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Thu, 4 Dec - Wed, 10 Dec
DCA
Washington
SEA
Seattle
RM1,008 Return, just found
RM1,008
Return
just found
Select Delta flight, departing Thu, 4 Dec from Washington to Seattle, returning Wed, 10 Dec, priced at RM1,008 just found
Delta
Thu, 4 Dec - Wed, 10 Dec
DCA
Washington
SEA
Seattle
RM1,049 Return, just found
RM1,049
Return
just found
Select Delta flight, departing Thu, 4 Dec from Washington to Seattle, returning Wed, 10 Dec, priced at RM1,049 just found
Delta
Thu, 4 Dec - Wed, 10 Dec
DCA
Washington
SEA
Seattle
RM1,090 Return, just found
RM1,090
Return
just found
Select Delta flight, departing Thu, 4 Dec from Washington to Seattle, returning Wed, 10 Dec, priced at RM1,090 just found
Delta
Thu, 4 Dec - Wed, 10 Dec
DCA
Washington
SEA
Seattle
RM1,213 Return, just found
RM1,213
Return
just found
Select Delta flight, departing Thu, 4 Dec from Washington to Seattle, returning Wed, 10 Dec, priced at RM1,213 just found
Delta
Thu, 4 Dec - Wed, 10 Dec
DCA
Washington
SEA
Seattle
RM1,254 Return, just found
RM1,254
Return
just found
Select Delta flight, departing Thu, 4 Dec from Washington to Seattle, returning Wed, 10 Dec, priced at RM1,254 just found
Delta
Thu, 4 Dec - Wed, 10 Dec
DCA
Washington
SEA
Seattle
RM1,339 Return, just found
RM1,339
Return
just found
Select Delta flight, departing Thu, 4 Dec from Washington to Seattle, returning Wed, 10 Dec, priced at RM1,339 just found
Delta
Thu, 4 Dec - Wed, 10 Dec
DCA
Washington
SEA
Seattle
RM1,380 Return, just found
RM1,380
Return
just found
Select Delta flight, departing Thu, 4 Dec from Washington to Seattle, returning Wed, 10 Dec, priced at RM1,380 just found
Delta
Thu, 4 Dec - Wed, 10 Dec
DCA
Washington
SEA
Seattle
RM1,508 Return, just found
RM1,508
Return
just found
Select Delta flight, departing Thu, 4 Dec from Washington to Seattle, returning Wed, 10 Dec, priced at RM1,508 just found
United
Thu, 4 Dec - Wed, 10 Dec
DCA
Washington
SEA
Seattle
RM1,798 Return, just found
RM1,798
Return
just found
Select United flight, departing Thu, 4 Dec from Washington to Seattle, returning Wed, 10 Dec, priced at RM1,798 just found
American Airlines
Thu, 4 Dec - Wed, 10 Dec
DCA
Washington
SEA
Seattle
RM2,222 Return, just found
RM2,222
Return
just found
Select American Airlines flight, departing Thu, 4 Dec from Washington to Seattle, returning Wed, 10 Dec, priced at RM2,222 just found

Find the cheapest month to fly from Washington (DCA) to Seattle (SEA)

November is typically the cheapest month to fly

From RM 580 - RM 2,342 per traveller.
Washington to Seattle route information
Origin airport
Ronald Reagan Washington National
Destination airport
Seattle - Tacoma Intl.
Return price
RM1,008
Distance
3715 km
Average flight time
2 hours 54 mins

Perfect flights from Washington to Seattle

Your Journey from Washington to Seattle

Start your unforgettable journey with Expedia. Our broad selection of flights from Washington to Seattle caters to every travel need. Whether you're yearning for a romantic escape, a solo adventure, or a cultural immersion, we've got you covered.
 

Choosing Your Ideal Flight

With Expedia, you have access to a wide range of airlines, including Delta, American Airlines, United. Our selection of flights from Ronald Reagan Washington National 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.
 

Maximizing Value with Washington to Seattle Flights

Experience the joy of finding cheap flights from Ronald Reagan Washington National 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 RM668 and roundtrip prices from RM1,008*.
 

Pre-Flight Essentials

Ensure a smooth journey from Washington to Seattle with Expedia. From information about check-in times and in-flight amenities to guidance on baggage policies, we provide all the essentials to prepare you for your flight.
 

Experience the Vibrant Seattle

Picture yourself stepping off the plane in Seattle and immersing yourself in the unique atmosphere of . From local markets to cultural festivals, each city offers its distinct charm. Make the most of your trip by exploring local attractions and indulging in the local cuisine. With Expedia, explore all this and more, tailored to your budget.
 

Added Convenience on Your Washington to Seattle Flight

Traveling with Expedia is more than just a flight. We offer details about in-flight amenities, baggage policies, and more to ensure a smooth and hassle-free journey. Choose from our variety of airlines and embark on a memorable journey from Washington to Seattle.
 

Beyond the Flight – Exploring Seattle

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 Washington to Seattle with Confidence

Planning your next great adventure is a breeze with Expedia. Our user-friendly platform, unbeatable prices, and round-the-clock customer support make your travel experience seamless and stress-free. Embark on your journey from Washington to Seattle with confidence. Book your travel arrangements with Expedia today.
 
*Note: Prices may vary based on availability and are subject to change.

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 RM1,008. 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.

Explore a world of travel with Expedia

*Available to Expedia members.