Route Guide
DCA→SEAmedium haul
Ronald Reagan Washington National Airport (Washington) to Seattle–Tacoma International Airport (Seattle) — 3,738 km, ~4h 39m estimated flight time.
View SEA → DCA insteadAirports on This Route
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Route Overview
DCA to SEA covers a great-circle distance of 3,738 km (2,323 miles), classified as a medium haul route. At typical cruise speed, the estimated flight time is around 4h 39m — actual block time varies by aircraft type, winds and routing. Seattle is 3 hours behind Washington (standard offset, not accounting for daylight saving time). This is a domestic route within United States. Route data indicates this city pair has historically been served nonstop.
Airlines on This Route
AS
Alaska Airlines
ALASKA
Aircraft types on record: 73H
Airline and schedule data comes from historical route records and may not reflect current, seasonal or codeshare-only service. Always confirm live schedules with the airline before booking.
Other Routes from Washington
DCA → PDX
Portland International Airport · Portland
3,773 km · medium haul
DCA → SFO
San Francisco International Airport · San Francisco
3,921 km · medium haul
DCA → SJU
Luis Munoz Marin International Airport · San Juan
2,507 km · medium haul
DCA → YYZ
Toronto Pearson International Airport · Toronto
578 km · short haul