$171 Find Cheap Flights from Seattle to District of Columbia - Compare and Save

The cheapest ticket to District of Columbia from Seattle found in the last 5 days was to Washington, D.C., at $228 round-trip. The most popular route is from Seattle (SEA) to Washington, D.C. Dulles Intl Airport (IAD), and the cheapest round-trip airline ticket found on this route in the last 5 days was $255.

The cheapest time of day to fly to District of Columbia is generally in the evening, when round-trip flights cost $362 on average. Morning departures are around 39% more expensive than evening flights, on average. The most expensive time of day to fly to District of Columbia is generally in the morning, which is peak travel time and where the average cost of a ticket is $504.

Yes, flying with a layover may cost you more time, but you can also save money on the route, with a 1 stop layover the cheapest option at $455 on average.

The cheapest month for flights from Seattle to District of Columbia is January, when tickets cost $329 (return) on average. On the other hand, the most expensive months are June and November, when the average cost of round-trip tickets is $525 and $481 respectively.

When flying from Seattle to District of Columbia, you should consider leaving on a Friday and avoid Sundays if you are looking for the best rates. For your return to Seattle, you’ll find the best rates on Wednesdays and the most expensive ones on Sundays.

To get a below average price on the flight from Seattle to District of Columbia, you should book around 4 weeks before departure, which saves you about 52% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 23 weeks before departure.

There are 6 airlines that fly nonstop from Seattle to District of Columbia. They are: American Airlines, Alaska Airlines, Southwest, Delta, Hawaiian Airlines and United Airlines. The cheapest price of all airlines flying this route was found with Delta at $108 for a round-trip flight to Baltimore (BWI). On average, Hawaiian Airlines offers the best prices for nonstop flights between Seattle and District of Columbia.

Seattle and District of Columbia are connected by different airlines. The airlines that fly that route the most regularly are Alaska Airlines (39 flights per week), American Airlines (27 flights per week), and Qatar Airways (24 flights per week).

The duration of a flight to District of Columbia depends on your arrival airport. The shortest route to District of Columbia from Seattle is to Washington, D.C., which takes 4h 55m.

There are 4 cabin class options for the route. These are First, Business, Economy and Prem Economy. Perform a search on KAYAK to find the latest prices and availability for all cabin fares, which differ across airlines.

The earliest flight from Seattle to District of Columbia departs at 8:10 am, landing in Washington, D.C. at 4:16 pm.

If you prefer to fly at night, the latest flight from Seattle to District of Columbia jets off at 11:20 pm and lands in Washington, D.C. at 7:22 am.