$136+ Cheap flights from Seattle (SEA) to Washington, D.C. (WAS)

Seattle/Tacoma Intl (SEA), located 11.4 mi from the city center, is the airport you fly out of when you book flights from Seattle to Washington, D.C.. 8 airlines have flights from Seattle/Tacoma Intl to Washington, D.C. on a regular basis. Booking flights from Seattle/Tacoma Intl to Washington, D.C. should not be difficult; the airport handles an average of 29 outbound flights to Washington, D.C. per day.

A quick flight from Seattle to Washington, D.C. can take about 5h. Southwest provides one of the quickest options available for as low as $187. The distance between Seattle and Washington, D.C. is about 2327 mi. This flight may include one or multiple stops.

Our cheapest airline available from Seattle to Washington, D.C. is Frontier. Our recent data shows that you can find tickets from as low as $128 on this airline. Additional options worth looking into are Hawaiian Airlines and Delta, starting at $143 and $201 round-trip. Frontier is currently priced 67% below the average price you’ll pay for this route.

The cheapest airline one-way is Frontier, with whom users have recently found tickets for as low as $147. However, be on the lookout for offers from Hawaiian Airlines and Southwest, as they are both options that can get you from Seattle to Washington, D.C. for a low price.

The most popular flight routes from Seattle to Washington, D.C. are Seattle/Tacoma Intl - Washington, D.C. Reagan-National, Seattle/Tacoma Intl - Washington, D.C. Dulles Intl and Seattle/Tacoma Intl - Baltimore/Washington.

No one likes to see their flight delayed. When booking a flight from Seattle to Washington, D.C. consider choosing Austrian Airlines (82%), Brussels Airlines (82%) or Lufthansa (78%) as they are the most reliable in getting you off to your destination on time.

While on average a flight from Seattle to Washington, D.C. is generally $953, our data shows the cheapest flight currently is $148. When looking at the most popular route, (Seattle/Tacoma Intl - Washington, D.C. Reagan-National), you can expect to pay $172 for that flight.

Flights departing from Seattle and landing in Washington, D.C. layover in Chicago most frequently.

Magnificent Mile, River North, and Grant Park are the most popular attractions in Chicago if you're in need of something to do during your layover. Magnificent Mile, River North, and Grant Park can be visited by traveling about 15.5 mi, 15.0 mi, and 16.2 mi respectively from Chicago O'Hare Intl. Those on a layover in Chicago in need of a rental car can book one at Chicago O'Hare Intl for about $66.

Of the flights from Seattle to Washington, D.C. that have layovers, the fewest flights stop in Denver.

Yes. In addition to deals on Seattle to Washington, D.C. flights, Cheapflights offers vacation packages that include both flights and hotel.

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Seattle to Washington, D.C..

Yes. Cheapflights offers flight deals from Seattle to Washington, D.C. by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

Currently, July is the cheapest month in which you can book a flight from Seattle to Washington, D.C. (average of $303). Flying from Seattle to Washington, D.C. in April is currently the most expensive (average of $337). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.