Direct flights from Seattle to Washington
All flights from SEA to DCA non-stop. There are direct flights from Seattle Tacoma International (SEA), Washington, USA to Ronald Reagan Washington National (DCA), District of Columbia, USA with Alaska Airlines and Delta Air Lines. 21 weekly departures are currently scheduled on this route. Departure times range from 07:20 to 13:55 depending on the schedule period. The flight distance is 2335 miles (3757 km). Flight time ranges from 5 hours and 1 minutes to 5 hours and 27 minutes.
Seattle
, USA
Flight schedule from Seattle to Washington with Alaska Airlines
This is a weekly direct flight schedule for Alaska Airlines. Use the arrows or click on the date to change week. Click on any flight departure time to show more information and check availability.
Flight
The timetable & schedule information was updated at 2026-07-13
Flight schedule from Seattle to Washington with Delta Air Lines
This is a weekly direct flight schedule for Delta Air Lines. Use the arrows or click on the date to change week. Click on any flight departure time to show more information and check availability.
Flight
The timetable & schedule information was updated at 2026-07-13
Seattle to Washington scheduled departures
Select a date to see every published non-stop departure between SEA and DCA.
SEA - DCA route facts
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Distance2335 miles (3757 km)
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Flight time5 hours and 1 minutes to 5 hours and 27 minutes
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Airlines Alaska Airlines Delta
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Airline alliancesoneworld SkyTeam
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CabinsEconomy Business First
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Hub airportsAlaska Airlines: SEA (Primary hub.)Delta Air Lines: SEA
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Arrival terminalsAlaska Airlines: Terminal 2Delta Air Lines: Terminal 2
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AircraftAlaska Airlines: Boeing 737MAX 8 Passenger and Boeing 737-800 (winglets) Passenger/BBJ2Delta Air Lines: Airbus A321neo
