Nonstop flights from Washington to Seattle

3 airlines fly this route, with up to 7 flights a day.

IADWashington Dulles International

2,300 mi · 45 flights a week

SEASeattle-Tacoma International

IADSEA

When they leave

Washington time

6:03a6:14pFirst departure 6:03 AM, last 6:14 PM

Four in the morning, 6:03 AM to 9:30 AM, then two in the afternoon, 1:10 PM to 1:20 PM, then three in the evening, 5:55 PM to 6:14 PM.

Every flight

Earliest first

6:03 AM→8:48 AMAlaska AirlinesBoeing 737 MAX 9Daily
7:10 AM→9:55 AMDelta Air LinesAirbus A220-300Daily
9:00 AM→11:51 AMUnited AirlinesBoeing 737Mon, Thu, Fri, Sat, Sun
9:30 AM→12:16 PMAlaska AirlinesBoeing 737 MAX 9Daily
1:10 PM→3:55 PMUnited AirlinesBoeing 737 MAX 9Mon, Thu, Fri, Sat, Sun
1:20 PM→4:06 PMUnited AirlinesBoeing 737Tue, Wed
5:55 PM→8:46 PMUnited AirlinesBoeing 737 MAX 9Mon, Thu, Fri, Sun
6:00 PM→8:45 PMUnited AirlinesBoeing 737 MAX 9Wed
6:14 PM→9:09 PMAlaska AirlinesBoeing 737Daily

Schedules last checked Sep 19, 2026. Times are local.

Flying from Washington to Seattle

Alaska Airlines flies most often, 3 times a day on the Boeing 737 MAX 9 and Boeing 737. United Airlines flies 1 to 3 times a day on the Boeing 737 MAX 9 and Boeing 737. Delta Air Lines flies daily on the Airbus A220-300.

Flights run every day of the week, from 5 on Tuesdays to 7 on Mondays, Thursdays, Fridays and Sundays. The first arrival in Seattle is at 8:48 AM and the last at 9:09 PM. The flight covers 2,300 miles.

Flying back, Seattle to Washington has 46 nonstop flights a week. Ronald Reagan Washington National (DCA) and Baltimore (BWI) also have nonstop flights to Seattle, 21 and 14 a week.