Flying from Denver International Airport (DEN) to St Louis Airport (STL): what you need to know
The average time for a direct flight from Denver International Airport to St Louis Airport is 2 hours 5 minutes.
St Louis's timezone is UTC-6, making St Louis one hour ahead of Denver.
Choose from 51 weekly Denver International Airport to St Louis Airport flights. The 05:00 departure with Southwest Airlines is the earliest flight you can take. Southwest Airlines operates the latest service of the day at 22:25.
To ensure you get on your DEN to STL flight, allow plenty of time to check in and find your gate. Turning up two hours before international departures and one hour before domestic flights is the general travel rule.
During popular months such as July, it's a good idea to get to the airport earlier than usual. Arrive two hours before a domestic departure and four hours ahead of international flights whenever you're flying during a peak period in general.
A number of airlines offer direct flights from Denver International Airport to St Louis Airport, so getting to St Louis (and then seeing more parts of the United States!) is easy. Top carriers that fly nonstop include:
The airline that passengers book most often on this route is Southwest Airlines.
With a reliable 84.93% of services arriving as scheduled, Frontier Airlines has the best on-time performance for DEN to STL flights.
We make it simple to book a flight with a stopover. To see your options for tickets from Denver International Airport to St Louis Airport, deselect 'Direct flights only.' Then, choose a flight that has a stop long enough to tour your chosen city. Stopovers between DEN and STL include:
Kansas City International Airport
Omaha Eppley Airfield Airport
Tulsa International Airport
How to find the cheapest flights from Denver International Airport (DEN) to St Louis Airport (STL)
The lowest price we've seen for a one-way Denver International Airport to St Louis Airport flight is $53. A round-trip fare right now is $111. Depending on the availability when you book, these fares could change.
It's usually smart to book early if you want to find cheap tickets from DEN to STL. That's because airlines adjust prices based on demand, which tends to rise closer to the date of departure.
Plan your trip for May. That's the cheapest month for flights from Denver International Airport to St Louis Airport. If you're flexible with your travel dates, use the 'Whole month' tool to find the cheapest price across every month.
Getting your hands on cheap flights from DEN to STL is a cinch with Price Alerts. All you need to do is create one of these automatic alerts and we'll let you know when fares go down.
Select your ideal departure and arrival times, airlines and number of stops with the filters. Or sort your results by 'Cheapest' to see the best deals on flights from Denver International Airport to St Louis Airport.
Handy information about Denver International Airport (DEN)
The address for DEN is 8500 Pena Boulevard.
80% of flights departing from Denver International Airport touch down at their destination as planned. Given its reliable on-time performance, delays are unlikely when taking off from DEN.
Denver International Airport is about 40 kilometers from central Denver. If you're driving, catching a cab or ride-sharing from the center, it'll take you 35 minutes or so to get there, depending on the traffic.
Taking public transport? Expect a trip time of around 35 minutes.
Booking a night at a hotel can take the stress out of getting to the airport on time. If you want a place to stay before your flight from Denver International Airport to St Louis Airport, check out Baymont by Wyndham Denver International Airport. It's a short drive from DEN.
Arriving at St Louis Airport (STL)
The last thing you need is a long trip to your hotel if you're getting in late on a Denver International Airport to St Louis Airport flight. Reserve one of these accommodation options near STL instead:
Pick up a St Louis Airport rental car and explore St Louis and beyond with your own wheels. Hertz, Budget and Alamo are popular outlets to choose from here.
To get the lowest price, reserve your vehicle from St Louis Airport around one week before you set off.
When to fly to St Louis Airport (STL)
The quietest month for a flight from Denver International Airport to St Louis Airport is March, while July is the most popular. Pick the ideal time to visit St Louis based on whether you prefer a laid-back vibe or a more bustling atmosphere.
Book your flight from Denver International Airport to St Louis Airport for July if you'd like to explore St Louis during its warmest month. You can expect temperatures of between 17ºC (63ºF) and 33ºC (91ºF).
Look for cheap tickets from DEN to STL in January if you'd rather travel during cooler conditions. Temperatures are at their lowest then, ranging between -7ºC (19ºF) and 8ºC (46ºF) on average.
Explore more of the United States
St Louis is always a good idea, but there are so many other parts of the United States waiting to be explored. Around 418 kilometers north-east of St Louis, a visit to Chicago will keep you on the go. Start with popular sights like Millennium Park, Art Institute of Chicago and Willis Tower.
Indianapolis is another essential stop in the United States and is around 370 kilometers east of St Louis. No trip is complete without seeing Lucas Oil Stadium, Eiteljorg Museum and The Children's Museum of Indianapolis.
