Nonstop flights from Washington to St. Louis

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

DCASTL

Routes

3 airport pairs

When they leave

Washington time

6:35a8:30pFirst departure 6:35 AM, last 8:30 PM

Six in the morning, 6:35 AM to 10:25 AM, then seven in the afternoon, 12:00 PM to 3:59 PM, then eight in the evening, 5:15 PM to 8:30 PM.

Every flight

Earliest first

6:35 AM→7:45 AMBWI to STLSouthwest AirlinesBoeing 737Mon, Tue, Wed, Thu, Fri, Sun
8:00 AM→9:10 AMDCA to STLSouthwest AirlinesBoeing 737-700Sun
8:00 AM→9:10 AMDCA to STLSouthwest AirlinesBoeing 737 MAX 8Tue, Wed
8:15 AM→9:35 AMDCA to STLSouthwest AirlinesBoeing 737-700Mon, Thu, Fri, Sat
8:25 AM→9:39 AMIAD to STLUnited AirlinesCRJ 700Daily
8:40 AM→10:14 AMDCA to STLAmerican AirlinesEmbraer 175Mon, Tue, Wed, Thu, Fri
10:25 AM→11:35 AMBWI to STLSouthwest AirlinesBoeing 737Daily
12:00 PM→1:15 PMDCA to STLSouthwest AirlinesBoeing 737-700Tue, Wed, Sat
12:00 PM→1:15 PMDCA to STLSouthwest AirlinesBoeing 737-700Sun
12:15 PM→1:25 PMDCA to STLSouthwest AirlinesBoeing 737 MAX 8Mon, Thu, Fri
1:40 PM→2:50 PMBWI to STLSouthwest AirlinesBoeing 737 MAX 8Tue, Wed, Sat
2:40 PM→3:55 PMDCA to STLSouthwest AirlinesBoeing 737-700Tue, Wed
2:45 PM→4:00 PMDCA to STLSouthwest AirlinesBoeing 737Sun
3:30 PM→4:45 PMDCA to STLSouthwest AirlinesBoeing 737Mon, Thu, Fri
3:59 PM→5:27 PMDCA to STLAmerican AirlinesCRJ 700Daily
5:15 PM→6:25 PMBWI to STLSouthwest AirlinesBoeing 737 MAX 8Mon, Thu, Fri
5:45 PM→7:11 PMIAD to STLUnited AirlinesCRJ 700Daily
6:00 PM→7:15 PMBWI to STLSouthwest AirlinesBoeing 737-700Sun
6:40 PM→7:50 PMDCA to STLSouthwest AirlinesBoeing 737 MAX 8Sat, Sun
6:50 PM→8:00 PMDCA to STLSouthwest AirlinesBoeing 737 MAX 8Mon, Thu, Fri
6:50 PM→8:00 PMDCA to STLSouthwest AirlinesBoeing 737 MAX 8Tue, Wed
7:55 PM→9:10 PMBWI to STLSouthwest AirlinesBoeing 737 MAX 8Tue, Wed, Sat, Sun
7:59 PM→9:28 PMDCA to STLAmerican AirlinesCRJ 700Mon, Tue, Wed, Thu, Fri, Sun
8:30 PM→9:40 PMBWI to STLSouthwest AirlinesBoeing 737 MAX 8Mon, Thu, Fri

Schedules last checked Sep 22, 2026. Times are local.

Flying from Washington to St. Louis

Southwest Airlines flies most often, 6 to 8 times a day on the Boeing 737 MAX 8, Boeing 737-700 and Boeing 737. 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.

Flights run every day of the week, from 9 on Saturdays to 13 on Mondays, Tuesdays, Wednesdays, Thursdays and Fridays. The first arrival in St. Louis is at 7:45 AM and the last at 9:40 PM.

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

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

Return flights

St. Louis to WashingtonView

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

Schedules as of Oct 9, 2026.