Nonstop flights from St. Louis to Denver

3 airlines fly this route, with up to 13 flights a day.

STLSt. Louis Lambert International

768 mi · 76 flights a week

DENDenver International

STLDEN

When they leave

St. Louis time

5:10a8:40pFirst departure 5:10 AM, last 8:40 PM

Five in the morning, 5:10 AM to 9:45 AM, then seven in the afternoon, 12:20 PM to 4:40 PM, then six in the evening, 5:20 PM to 8:40 PM.

Every flight

Earliest first

5:10 AM→6:43 AMUnited AirlinesEmbraer 175Thu, Sat, Sun
6:25 AM→7:40 AMSouthwest AirlinesBoeing 737-700Daily
8:30 AM→9:45 AMSouthwest AirlinesBoeing 737-700Daily
9:00 AM→10:31 AMUnited AirlinesBoeing 737Daily
9:45 AM→11:00 AMSouthwest AirlinesBoeing 737-700Sun
12:20 PM→1:35 PMSouthwest AirlinesBoeing 737 MAX 8Tue, Wed
12:45 PM→2:00 PMSouthwest AirlinesBoeing 737 MAX 8Mon, Thu, Fri
1:36 PM→3:00 PMUnited AirlinesAirbus A320Daily
2:00 PM→3:15 PMSouthwest AirlinesBoeing 737-700Mon, Thu, Fri, Sun
2:15 PM→3:30 PMSouthwest AirlinesBoeing 737-700Sat
4:05 PM→5:20 PMSouthwest AirlinesBoeing 737-800Tue, Wed
4:40 PM→5:55 PMSouthwest AirlinesBoeing 737Sun
4:40 PM→6:10 PMUnited AirlinesBoeing 737-800Daily
5:20 PM→6:35 PMSouthwest AirlinesBoeing 737 MAX 8Sat
5:30 PM→6:45 PMSouthwest AirlinesBoeing 737Mon, Tue, Wed, Thu, Fri, Sun
6:05 PM→7:20 PMSouthwest AirlinesBoeing 737 MAX 8Mon, Thu, Fri, Sat
6:55 PM→8:22 PMUnited AirlinesAirbus A319Thu, Sun
8:10 PM→9:39 PMFrontier AirlinesAirbus A320Mon, Wed, Fri, Sat, Sun
8:40 PM→10:00 PMSouthwest AirlinesBoeing 737 MAX 8Mon, Tue, Wed, Thu, Fri, Sun

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

Flying from St. Louis to Denver

Southwest Airlines flies most often, 5 to 7 times a day on the Boeing 737 MAX 8, Boeing 737-700, Boeing 737 and Boeing 737-800. United Airlines flies 3 to 5 times a day on the Airbus A319, Airbus A320, Boeing 737, Boeing 737-800 and Embraer 175. Frontier Airlines flies 5 times a week on the Airbus A320.

Flights run every day of the week, from 9 on Tuesdays to 13 on Sundays. The first arrival in Denver is at 6:43 AM and the last at 10:00 PM. The flight covers 768 miles.

Flying back, Denver to St. Louis has 78 nonstop flights a week.

Return flights

Denver to St. LouisView

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

Schedules as of Oct 9, 2026.