฿4,835 Cheap Flights from Seattle (SEA) to Washington (DCA)

View ฿4,835 flight on Sat, 30 Aug 2025Opens in a new window

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

  • Plan, book, fly with confidence

  • trending down icon

    Be in the know

    Get alerts if flight prices drop or rise*
  • bex rewards loyalty icon

    Book smarter

    Save up to 40% on select hotels after you book a flight*
  • payments icon

    Earn twice

    Earn your airline miles on top of our rewards
    Sign in

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

Prices were available within the past 7 days and start at ฿4,835 for one-way flights and ฿9,340 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Wed, 27 Aug - Tue, 2 Sep
SEA
Seattle
DCA
Washington
฿9,340 Return, found 4 days ago
฿9,340
Return
found 4 days ago
Select Delta flight, departing Wed, 27 Aug from Seattle to Washington, returning Tue, 2 Sep, priced at ฿9,340 found 4 days ago
United
Wed, 27 Aug - Tue, 2 Sep
SEA
Seattle
DCA
Washington
฿11,615 Return, found 4 days ago
฿11,615
Return
found 4 days ago
Select United flight, departing Wed, 27 Aug from Seattle to Washington, returning Tue, 2 Sep, priced at ฿11,615 found 4 days ago
Delta
Wed, 27 Aug - Tue, 2 Sep
SEA
Seattle
DCA
Washington
฿11,785 Return, found 4 days ago
฿11,785
Return
found 4 days ago
Select Delta flight, departing Wed, 27 Aug from Seattle to Washington, returning Tue, 2 Sep, priced at ฿11,785 found 4 days ago
Delta
Wed, 27 Aug - Tue, 2 Sep
SEA
Seattle
DCA
Washington
฿11,935 Return, found 4 days ago
฿11,935
Return
found 4 days ago
Select Delta flight, departing Wed, 27 Aug from Seattle to Washington, returning Tue, 2 Sep, priced at ฿11,935 found 4 days ago
United
Wed, 27 Aug - Tue, 2 Sep
SEA
Seattle
DCA
Washington
฿12,100 Return, found 4 days ago
฿12,100
Return
found 4 days ago
Select United flight, departing Wed, 27 Aug from Seattle to Washington, returning Tue, 2 Sep, priced at ฿12,100 found 4 days ago
American Airlines
Wed, 27 Aug - Tue, 2 Sep
SEA
Seattle
DCA
Washington
฿12,250 Return, found 4 days ago
฿12,250
Return
found 4 days ago
Select American Airlines flight, departing Wed, 27 Aug from Seattle to Washington, returning Tue, 2 Sep, priced at ฿12,250 found 4 days ago
Delta
Wed, 27 Aug - Tue, 2 Sep
SEA
Seattle
DCA
Washington
฿12,255 Return, found 4 days ago
฿12,255
Return
found 4 days ago
Select Delta flight, departing Wed, 27 Aug from Seattle to Washington, returning Tue, 2 Sep, priced at ฿12,255 found 4 days ago
United
Wed, 27 Aug - Tue, 2 Sep
SEA
Seattle
DCA
Washington
฿12,265 Return, found 4 days ago
฿12,265
Return
found 4 days ago
Select United flight, departing Wed, 27 Aug from Seattle to Washington, returning Tue, 2 Sep, priced at ฿12,265 found 4 days ago
Delta
Wed, 27 Aug - Tue, 2 Sep
SEA
Seattle
DCA
Washington
฿12,575 Return, found 4 days ago
฿12,575
Return
found 4 days ago
Select Delta flight, departing Wed, 27 Aug from Seattle to Washington, returning Tue, 2 Sep, priced at ฿12,575 found 4 days ago
Delta
Wed, 27 Aug - Tue, 2 Sep
SEA
Seattle
DCA
Washington
฿12,585 Return, found 4 days ago
฿12,585
Return
found 4 days ago
Select Delta flight, departing Wed, 27 Aug from Seattle to Washington, returning Tue, 2 Sep, priced at ฿12,585 found 4 days ago

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

September is typically the cheapest month to fly

From ฿4,472 - ฿8,753 per traveller.

Graph displaying average flight prices per month

Flight from Seattle to Washington route information
Origin airport
Seattle - Tacoma Intl.
Destination airport
Ronald Reagan Washington National
Return price
฿9,340
Distance
3715 km
Average flight time
8 hours 6 mins

Perfect flights from Seattle to Washington

Embark on an unforgettable journey without breaking the bank with Expedia's incredible deals on cheap flights from Seattle to Washington. Whether you're aching for a romantic escape with your partner, craving an adventurous solo expedition, or yearning to immerse yourself in the local history and culture, we've got you covered.
 
Picture yourself strolling through the streets of , surrounded by breathtaking architecture and absorbing the vibrant atmosphere of this captivating city. Indulge in the mouth-watering local specialties, from tantalizing street food to exquisite fine dining. With Expedia, you can experience all of this and more, without sacrificing your budget.
 
Our flexible Seattle - Tacoma Intl. to Ronald Reagan Washington National ticket options cater to your travel preferences, with incredible one-way fares from ฿4,835 and roundtrip prices from ฿9,340. Whether you're planning a short city break or a longer adventure, our dynamic pricing ensures that you find the best deals for your journey.
 
But the magic doesn't stop there. Expedia offers a range of partner services to enhance your trip. Rent a car at Ronald Reagan Washington National and explore and its surrounding areas at your own pace. Discover hidden gems off the beaten path, and create unforgettable memories. We also provide a handpicked selection of accommodations, from charming bed and breakfasts to luxury hotels, ensuring that you have a comfortable and memorable stay.
 
Planning your next great adventure is a breeze with Expedia. Our user-friendly platform, unbeatable prices, and round-the-clock customer support are designed to make your travel experience seamless and stress-free. So, why wait? Book your to travel arrangements today and embark on the journey of a lifetime in Washington.

Frequently asked questions

How much is a flight from SEA to National Airport?
Within the past 7 days on Expedia, for flights departing within the next year, the lowest price advertised for a round-trip journey between Seattle - Tacoma Intl. Airport (SEA) and National Airport was ฿9,340. Great fares don't stick around for long, so 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 Sea-Tac Airport to DCA?
Every air carrier has its own set of terms and conditions. If you decide to cancel your trip, visit our Customer Service Portal.
How do I find cheap flights from Sea-Tac Airport to Ronald Reagan Washington National Airport (DCA) 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 SEA to National Airport flights, you'll see a "no change fees" filter for you to select.
How far is the flight from Sea-Tac Airport to Ronald Reagan Washington National Airport (DCA)?
Around 3,700 kilometres separates SeaTac and Arlington, so pack something to keep you occupied for a couple of hours. That latest bestseller you've yet to start will be ideal.
Which airlines fly direct from SEA to Ronald Reagan Washington National Airport (DCA)?
Flying nonstop from SEA to National Airport is easy with Alaska Airlines (AS). This top airline operates 60 flights every month.
Are SEA to National Airport flight tickets cheaper when they're purchased at the last minute?
Flight prices from Seattle - Tacoma Intl. Airport (SEA) to DCA are available up to a year prior to departure on Expedia. And although you may nab a fantastic last-minute deal, it's never something you can count on. Also, booking your flights well in advance means you'll have more options — and you can avoid getting trapped in the dreaded middle seat! We frequently update our fares to bring you the biggest bargains, so check back often for all the latest specials.

Explore a world of travel with Expedia

Washington Airports

Baltimore

Seattle to Baltimore Washington Intl. Thurgood Marshall
฿7,575.00

Washington

*Available to Expedia members.