Nonstop flights from St. Louis to Washington

3 airlines fly from St. Louis (STL) to 3 Washington airports (DCA, BWI and IAD), with up to 13 flights a day.

STLDCA

Routes

3 airport pairs

When they leave

St. Louis time

6:00a7:55pFirst departure 6:00 AM, last 7:55 PM

Six in the morning, 6:00 AM to 11:40 AM, then seven in the afternoon, 1:00 PM to 4:30 PM, then four in the evening, 5:57 PM to 7:55 PM.

Every flight

Earliest first

6:00 AM→9:14 AMSTL to DCAAmerican AirlinesCRJ 700Daily
6:05 AM→9:10 AMSTL to BWISouthwest AirlinesBoeing 737 MAX 8Daily
8:00 AM→11:10 AMSTL to IADUnited AirlinesCRJ 700 · 2h 10mDaily
8:10 AM→11:10 AMSTL to DCASouthwest AirlinesBoeing 737-700Daily
10:44 AM→2:17 PMSTL to DCAAmerican AirlinesEmbraer 175Mon, Tue, Wed, Thu, Fri
11:40 AM→2:40 PMSTL to BWISouthwest AirlinesBoeing 737Mon, Tue, Wed, Thu, Fri, Sun
1:00 PM→4:00 PMSTL to DCASouthwest AirlinesBoeing 737 MAX 8Sun
1:00 PM→4:09 PMSTL to IADUnited AirlinesEmbraer 175 · 2h 9mDaily
1:10 PM→4:10 PMSTL to DCASouthwest AirlinesBoeing 737-700Mon, Tue, Wed, Thu, Fri
1:40 PM→4:40 PMSTL to BWISouthwest AirlinesBoeing 737Tue, Wed, Sat, Sun
3:30 PM→6:35 PMSTL to DCASouthwest AirlinesBoeing 737 MAX 8Tue, Wed, Sat
3:55 PM→6:55 PMSTL to DCASouthwest AirlinesBoeing 737Mon, Thu, Fri, Sun
4:15 PM→7:15 PMSTL to BWISouthwest AirlinesBoeing 737 MAX 8Mon, Thu, Fri
4:30 PM→7:30 PMSTL to BWISouthwest AirlinesBoeing 737-700Tue, Wed
5:57 PM→9:14 PMSTL to DCAAmerican AirlinesCRJ 700Mon, Tue, Wed, Thu, Fri, Sun
6:50 PM→9:50 PMSTL to BWISouthwest AirlinesBoeing 737Mon, Thu, Fri, Sat, Sun
7:10 PM→10:10 PMSTL to DCASouthwest AirlinesBoeing 737-700Tue, Wed
7:55 PM→10:55 PMSTL to DCASouthwest AirlinesBoeing 737 MAX 8Mon, Thu, Fri, Sat, Sun

Schedules last checked Oct 6, 2026. Times are local.

Flying from St. Louis to Washington

Southwest Airlines flies most often, 6 to 8 times a day on the Boeing 737 MAX 8, Boeing 737 and Boeing 737-700. American Airlines flies 1 to 3 times a day on the CRJ 700 and Embraer 175. United Airlines flies twice a day on the CRJ 700 and Embraer 175.

Flights run every day of the week, from 9 on Saturdays to 13 on Mondays, Tuesdays, Wednesdays, Thursdays and Fridays. The first arrival in Washington is at 9:10 AM and the last at 10:55 PM.

STL to DCA is the busiest airport pair, with 45 flights a week, then STL to BWI with 27 and STL to IAD with 14.

Flying back, Washington to St. Louis has 86 nonstop flights a week.

Return flights

Washington to St. LouisView

Find the cheapest day to fly from St. Louis to Washington.

Schedules as of Oct 9, 2026.