Nonstop flights from Seattle to Washington

3 airlines fly from Seattle (SEA) to 3 Washington airports (IAD, DCA and BWI), with up to 12 flights a day.

SEAIAD

Routes

3 airport pairs

When they leave

Seattle time

7:20a11:20pFirst departure 7:20 AM, last 11:20 PM

Six in the morning, 7:20 AM to 9:13 AM, then four in the afternoon, 1:00 PM to 4:01 PM, then three in the evening, 10:22 PM to 11:20 PM.

Every flight

Earliest first

7:20 AM→3:21 PMSEA to DCADelta Air LinesAirbus A321neoDaily
8:00 AM→4:16 PMSEA to DCAAlaska AirlinesBoeing 737 MAX 8Daily
8:10 AM→4:16 PMSEA to IADUnited AirlinesBoeing 737 MAX 9Tue
8:15 AM→4:24 PMSEA to IADUnited AirlinesBoeing 737 MAX 8Mon, Wed, Thu, Fri, Sat, Sun
9:03 AM→5:04 PMSEA to BWIAlaska AirlinesBoeing 737 MAX 9Daily
9:13 AM→5:11 PMSEA to IADAlaska AirlinesBoeing 737Daily
1:00 PM→9:06 PMSEA to IADUnited AirlinesBoeing 737Mon, Wed, Thu, Fri, Sat, Sun
1:46 PM→9:59 PMSEA to DCAAlaska AirlinesBoeing 737-800Daily
3:58 PM→11:59 PMSEA to IADDelta Air LinesAirbus A220-300Daily
4:01 PM→11:59 PMSEA to IADAlaska AirlinesBoeing 737 MAX 9Daily
10:22 PM→6:27 AM⁺¹SEA to BWIAlaska AirlinesBoeing 737 MAX 9Daily
10:43 PM→6:39 AM⁺¹SEA to IADAlaska AirlinesBoeing 737 MAX 9Daily
11:20 PM→7:22 AM⁺¹SEA to IADUnited AirlinesBoeing 737 MAX 9Mon, Wed, Thu, Fri, Sun

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

Flying from Seattle to Washington

Alaska Airlines flies most often, 7 times a day on the Boeing 737 MAX 9, Boeing 737, Boeing 737 MAX 8 and Boeing 737-800. United Airlines flies 1 to 3 times a day on the Boeing 737 MAX 9, Boeing 737 and Boeing 737 MAX 8. Delta Air Lines flies twice a day on the Airbus A220-300 and Airbus A321neo.

Flights run every day of the week, from 10 on Tuesdays to 12 on Mondays, Wednesdays, Thursdays, Fridays and Sundays. The first arrival in Washington is at 3:21 PM and the last at 7:22 AM the next day.

SEA to IAD is the busiest airport pair, with 46 flights a week, then SEA to DCA with 21 and SEA to BWI with 14.

On SEA to BWI, Southwest Airlines stopped flying it after Sep 30.

Flying back, Washington to Seattle has 80 nonstop flights a week.

Return flights

Washington to SeattleView

Find the cheapest day to fly from Seattle to Washington.

Schedules as of Oct 9, 2026.