Nonstop flights from St. Louis to Washington

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

STLSt. Louis Lambert International

717 mi · 45 flights a week

DCARonald Reagan Washington National

STLDCA

When they leave

St. Louis time

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

Three in the morning, 6:00 AM to 10:44 AM, then four in the afternoon, 1:00 PM to 3:55 PM, then three in the evening, 5:57 PM to 7:55 PM.

Every flight

Earliest first

6:00 AM→9:14 AMAmerican AirlinesCRJ 700Daily
8:10 AM→11:10 AMSouthwest AirlinesBoeing 737-700Daily
10:44 AM→2:17 PMAmerican AirlinesEmbraer 175Mon, Tue, Wed, Thu, Fri
1:00 PM→4:00 PMSouthwest AirlinesBoeing 737 MAX 8Sun
1:10 PM→4:10 PMSouthwest AirlinesBoeing 737-700Mon, Tue, Wed, Thu, Fri
3:30 PM→6:35 PMSouthwest AirlinesBoeing 737 MAX 8Tue, Wed, Sat
3:55 PM→6:55 PMSouthwest AirlinesBoeing 737Mon, Thu, Fri, Sun
5:57 PM→9:14 PMAmerican AirlinesCRJ 700Mon, Tue, Wed, Thu, Fri, Sun
7:10 PM→10:10 PMSouthwest AirlinesBoeing 737-700Tue, Wed
7:55 PM→10:55 PMSouthwest AirlinesBoeing 737 MAX 8Mon, Thu, Fri, Sat, Sun

Schedules last checked Sep 21, 2026. Times are local.

Flying from St. Louis to Washington

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 Washington is at 9:14 AM and the last at 10:55 PM. The flight covers 717 miles.

Flying back, Washington to St. Louis has 45 nonstop flights a week. From St. Louis, Baltimore (BWI) and Dulles (IAD) are the other Washington area airports with nonstop flights, 27 and 14 a week.