Nonstop flights from Washington to St. Louis

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

DCARonald Reagan Washington National

717 mi · 45 flights a week

STLSt. Louis Lambert International

DCASTL

When they leave

Washington time

8:00a7:59pFirst departure 8:00 AM, last 7:59 PM

Three in the morning, 8:00 AM to 8:40 AM, then six in the afternoon, 12:00 PM to 3:59 PM, then three in the evening, 6:40 PM to 7:59 PM.

Every flight

Earliest first

8:00 AM→9:10 AMSouthwest AirlinesBoeing 737-700Sun
8:00 AM→9:10 AMSouthwest AirlinesBoeing 737 MAX 8Tue, Wed
8:15 AM→9:35 AMSouthwest AirlinesBoeing 737-700Mon, Thu, Fri, Sat
8:40 AM→10:14 AMAmerican AirlinesEmbraer 175Mon, Tue, Wed, Thu, Fri
12:00 PM→1:15 PMSouthwest AirlinesBoeing 737-700Tue, Wed, Sat
12:00 PM→1:15 PMSouthwest AirlinesBoeing 737-700Sun
12:15 PM→1:25 PMSouthwest AirlinesBoeing 737 MAX 8Mon, Thu, Fri
2:40 PM→3:55 PMSouthwest AirlinesBoeing 737-700Tue, Wed
2:45 PM→4:00 PMSouthwest AirlinesBoeing 737Sun
3:30 PM→4:45 PMSouthwest AirlinesBoeing 737Mon, Thu, Fri
3:59 PM→5:27 PMAmerican AirlinesCRJ 700Daily
6:40 PM→7:50 PMSouthwest AirlinesBoeing 737 MAX 8Sat, Sun
6:50 PM→8:00 PMSouthwest AirlinesBoeing 737 MAX 8Mon, Thu, Fri
6:50 PM→8:00 PMSouthwest AirlinesBoeing 737 MAX 8Tue, Wed
7:59 PM→9:28 PMAmerican AirlinesCRJ 700Mon, Tue, Wed, Thu, Fri, Sun

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

Flying from Washington to St. Louis

Southwest Airlines flies most often, 3 to 4 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.

Flights run every day of the week, from 4 on Saturdays to 7 on Mondays, Tuesdays, Wednesdays, Thursdays and Fridays. The first arrival in St. Louis is at 9:10 AM and the last at 9:28 PM. The flight covers 717 miles.

Flying back, St. Louis to Washington has 45 nonstop flights a week. Baltimore (BWI) and Dulles (IAD) also have nonstop flights to St. Louis, 27 and 14 a week.