
Popular airlines from Seattle-Tacoma International Airport (SEA) to Ronald Reagan National Airport (DCA)
- Alaska Airlines
Alaska Airlines
- Delta
Delta
- American Airlines
American Airlines
- JetBlue Airways
JetBlue Airways
- United
United
- Hawaiian Airlines
Hawaiian Airlines
- Plan, book, fly with confidence
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Cheap flights from Seattle (SEA) to Washington (DCA)
Prices were available within the past 7 days and start at CA $190 for one-way flights and CA $376 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.










Find the cheapest month to fly from Seattle (SEA) to Washington (DCA)
September is typically the cheapest month to fly
Graph displaying average flight prices per month
Origin airport | Seattle - Tacoma Intl. |
Destination airport | Ronald Reagan Washington National |
Airlines serving | Alaska Airlines, American Airlines, Delta, Hawaiian Airlines, JetBlue Airways, United |
Roundtrip price | CA $376 |
Distance | 3715 km |
Average flight time | 8 hours 6 mins |
Seattle to Washington Flights
The easy way to book your flights from Seattle to Washington
With Expedia, it’s simple to find and book flights to Washington from Seattle whether you’re traveling for business or pleasure. Enter your travel dates, hit search, and choose your flight from 20 airlines that cover this route. There are JAL, Alaska Airlines, Delta Air Lines, Hawaiian Airlines, Korean Air, Air Tahiti Nui nonstop flights to Ronald Reagan Washington National, too.
Choose your preferred carrier and cabin class with the advanced search tool and select your ideal departure time. Then, if you want, you can see just nonstop or refundable flights. And if you’re traveling last minute, just enter the date to check out flights from Seattle to Washington today, tomorrow, or this week.
Save dollars with cheap flights from Seattle - Tacoma Intl., SEA to Ronald Reagan Washington National, DCA
Sort your search results by price to find great deals on your flight from Seattle to Washington—you get all your cheapest options first. Grab yourself a bargain now—the lowest price on flights to Washington from Seattle currently is just CA $376 rising to CA $506.
Here are more money-saving tips:
- Fly in October when flight prices are normally at their lowest
- Book about a month to 6 weeks before you travel for the best prices to Washington
- Avoid peak season and weekends when flights can cost more
- Early morning and late-night flights are sometimes cheaper, so try varying your travel times
- One surefire way to save money on your flight is to book your flight and hotel together with Expedia. Sometimes, the savings are so large that the flight is basically free!
Reasons to choose Expedia for your flight to Washington from Seattle
Whatever your destination, budget, or reason to travel, in just one quick search, you can choose from loads of flights, airlines, and cabin classes. The filters make it quick and easy to find your ideal flights, and if you choose one of the flexible options, you won’t be charged to change your flight. So book your flight to Washington with Expedia today.
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