Direct (non-stop) flights from Saint Louis (STL) to Denver (DEN)
Find comprehensive flight information, schedules, and booking details for direct flights from Saint Louis (STL) to Denver (DEN). This popular route is operated by 3 airlines, offering multiple daily departures.• Flight Duration: 2h 10m - 2h 39m (average flight time)• Distance: 772 miles (1242 km) (air miles between airports)• Daily Flights: 7-15 flights (scheduled departures per day)
Saint Louis (STL)
Denver (DEN)
FLIGHT TIME
2h 10m - 2h 39m
FLIGHT DISTANCE
772 miles (1242 km)
2h 20m - 2h 34m
05:35
21:45
772 miles (1242 km)
March
3 (Show)
77
Flight Schedule
December 2025
Airlines with direct flights from Saint Louis (STL) to Denver (DEN)
Route Insights
Duration variability: Flight duration on this route can vary based on aircraft type, wind conditions, and airline scheduling. Average duration is 2h 10m - 2h 39m.
Pricing patterns: March typically offers lower prices due to reduced demand outside peak travel seasons.
Best departure times: Peak departure times are 13:00, 5:00, 8:00, offering more flight options and potentially better connections.
Saint Louis (STL) - Denver (DEN) flight price statistics
$175
ApproximateThe numbers are average prices found based on user searches for direct flights between the airports. It's calculated from the cheapest prices found per month for a round-trip with 1 adult and can vary depending on the amount of data we have for this particular route.
$61
Jan$48
Feb$39
Mar$93
Apr$39
May$180
Jun$190
Jul$241
Aug$230
Sep$326
Oct$326
Nov$326
DecRelated Information
Airports: STL • DEN Airport
Airlines operating this route: Southwest Airlines (WN), United Airlines, Frontier Airlines
Frequently Asked Questions
How many flights operate from STL to DEN?
There are 11 direct flights operating from STL to DEN. Approximately 7-15 flights daily.
Which airlines operate flights from STL to DEN?
3 airlines operate on this route: Southwest Airlines, United Airlines, Frontier Airlines.
How long is the flight from STL to DEN?
The flight duration from STL to DEN is approximately 2h 10m - 2h 39m.
What is the distance from STL to DEN?
The distance from STL to DEN is 772 miles (1242 km).
What is the flight time range for this route?
Flight times on this route range from 2h 20m - 2h 34m.
What are the earliest and latest flight departure times?
The earliest flight departs at 05:35 and the latest flight departs at 21:45.
What is the cheapest month to fly from STL to DEN?
March is typically the cheapest month to fly on this route.
How many flights operate per week on this route?
Approximately 77 flights operate per week from STL to DEN.
What types of aircraft operate on this route?
This route is served by Boeing 737MAX 8 Passenger, Boeing 737-700 (winglets) Passenger/BBJ1, Airbus A320, Boeing 737-800 (winglets) Passenger/BBJ2, Airbus A321neo.
What is the average flight price from STL to DEN?
The average flight price for a round-trip ticket from STL to DEN is approximately $175 USD. Prices can vary based on booking time, season, and airline.
When is the best time to book flights from STL to DEN for the lowest prices?
March is typically the cheapest month to fly from STL to DEN. Booking in advance and avoiding peak travel seasons can help you find better deals.
How many airlines offer flights from STL to DEN?
3 airlines offer direct flights from STL to DEN, providing travelers with multiple options for scheduling and pricing.
How far is DEN from STL?
The distance from STL to DEN is 772 miles (1242 km). This is a long-haul flight route.
How long does it take to fly from STL to DEN?
The flight time from STL to DEN is approximately 2h 10m - 2h 39m. Actual flight duration may vary based on weather conditions, aircraft type, and routing.