Denver to St. Louis (DEN-STL): nonstop flights and who flies them

United Airlines and Frontier Airlines fly nonstop between Denver (DEN) and St. Louis (STL), roughly 27 times a week. The timetable below shows the nonstop scheduled at 2h 2m to 2h 16m for the 768 miles.

Schedule last confirmed . Departure times come from 2LNR's schedule data; confirm with the airline before you book.

Updated .

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27
Flights a week, 4-week average
2h 2m to 2h 16m
Scheduled flight time
768 mi
Nonstop distance
Free
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Denver to St. Louis flight schedule

Scheduled nonstop departures for DEN to STL starting October 22, 2026, last checked against our schedule feed on October 18, 2026. Airlines retime and cancel flights, so confirm with the airline before you book.

Schedule data dated .

Scheduled nonstop departures from Denver (DEN) to St. Louis (STL)
Date Flight Airline Departs DEN Arrives STL Duration Aircraft
UA 652United Airlines09:3512:402h 5mAirbus A319
UA 1639United Airlines13:3016:372h 7mAirbus A319
F9 3302Frontier Airlines16:1219:152h 3mAirbus A320
UA 1422United Airlines17:3020:362h 6mBoeing 737-900
UA 4733United Airlines20:2823:442h 16mEmbraer E175
UA 652United Airlines09:3512:402h 5mAirbus A319
UA 1639United Airlines13:3016:372h 7mAirbus A319
F9 3302Frontier Airlines16:1219:152h 3mAirbus A320neo
UA 1422United Airlines17:3020:362h 6mBoeing 737-800
UA 4733United Airlines20:2823:442h 16mEmbraer E175
UA 652United Airlines09:3512:402h 5mAirbus A319
UA 1639United Airlines13:3016:372h 7mAirbus A319
F9 3302Frontier Airlines16:1219:152h 3mAirbus A320neo
UA 1422United Airlines17:3020:362h 6mBoeing 737-900
UA 4733United Airlines20:2823:442h 16mEmbraer E175
UA 652United Airlines09:3512:402h 5mAirbus A320
UA 1639United Airlines13:3016:372h 7mAirbus A319
F9 3302Frontier Airlines16:1219:152h 3mAirbus A320
UA 1422United Airlines17:5421:012h 7mBoeing 737-900
UA 652United Airlines09:3512:402h 5mAirbus A320
UA 1639United Airlines13:3016:372h 7mAirbus A319
F9 3302Frontier Airlines16:1219:152h 3mAirbus A320neo
UA 1422United Airlines17:5220:592h 7mBoeing 737-900
UA 652United Airlines09:3512:382h 3mBoeing 737-800
UA 1639United Airlines13:3016:372h 7mAirbus A319
UA 1422United Airlines17:5220:592h 7mBoeing 737-900
UA 652United Airlines09:3512:382h 3mBoeing 737-800
F9 3302Frontier Airlines12:2115:232h 2mAirbus A320neo
UA 1639United Airlines13:3016:372h 7mAirbus A319
UA 1422United Airlines17:5220:592h 7mBoeing 737-900

Showing all 30 scheduled DEN to STL departures across 7 days with service, starting October 22, 2026. Later dates are on the interactive map.

Departure and arrival times are local at their own airport, so an arrival can fall on a different local date than the departure; the duration column is the true elapsed flying time. A dash means the airline hasn't filed that value in the schedule data we hold. Aircraft are the equipment the airline filed, named where the code pins down one type and shown as the family or the bare code where it doesn't. Swaps can happen up to departure.

See every DEN to STL date on the interactive map

Aircraft on the Denver to St. Louis nonstop

In the schedule table on this page, United Airlines flies the Airbus A319, the Boeing 737-900, the Embraer E175, the Boeing 737-800, and the Airbus A320, and Frontier Airlines flies the Airbus A320neo and the Airbus A320. Each linked aircraft page shows where that airline schedules it. Airlines can swap aircraft up to departure.

The full DEN to STL nonstop schedule

This page carries the full DEN to STL nonstop schedule, who operates each departure and how often it runs; the reverse direction is linked below.

See the schedule

Who operates each DEN to STL nonstop and how often it runs, from 2LNR's schedule data.

Plan on the map

See DEN to STL on the interactive route map, with schedules, connections, and route statistics.

Airlines flying Denver to St. Louis nonstop

Carriers operating DEN to STL nonstop in the current schedule.

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Frequently asked questions about DEN to STL

How long is the flight from Denver (DEN) to St. Louis (STL)?
Scheduled flight times from Denver (DEN) to St. Louis (STL) run from 2h 2m to 2h 16m across the departures in the schedule table on this page. The nonstop covers about 768 miles, and airlines adjust scheduled times by season, so confirm with the airline before you book.
Which airlines fly nonstop from DEN to STL?
United Airlines and Frontier Airlines fly DEN to STL nonstop. 2LNR doesn't show award or upgrade space for any of them on DEN to STL, so this page carries the schedule rather than a space claim.
How many flights a week are there from DEN to STL?
About 27 nonstop flights a week run between Denver (DEN) and St. Louis (STL) in the current schedule, operated by United Airlines and Frontier Airlines. Frequency shifts by season, and the schedule table on this page shows what is scheduled next.
What time do flights from DEN to STL depart?
Scheduled DEN to STL nonstops in the next 7 days with service leave between 09:35 and 20:28, local time at Denver. The schedule table on this page lists every departure by date, with its arrival time and aircraft.
Which flights operate DEN to STL nonstop?
In the schedule table on this page, DEN to STL nonstops fly as UA 652, UA 1422, UA 1639, and UA 4733 on United Airlines, and F9 3302 on Frontier Airlines. The table lists each departure by date with its times and aircraft.
Does 2LNR show upgrade or award space on DEN to STL?
Not on this route: 2LNR doesn't show award or upgrade space for any airline flying DEN to STL. The page carries the full DEN to STL nonstop schedule and who flies each departure, and the reverse direction is linked below.

See the full DEN to STL nonstop schedule

Every scheduled departure on this route, with who flies it. 2LNR shows upgrade and award space by date on the carriers it tracks, the next 14 days free on every product and the full horizon on Pro.

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