DenverSt Louis
Flights from Denver to St Louis
Nonstop flights from Denver (DEN) to St Louis (STL) take about 2h 3m (1,236 km). United Airlines and Southwest Airlines fly it. Lowest fare seen: $156 one-way, nonstop (22 Oct 2026).
When you land in St Louis
The airport transfer and the few things worth sorting before you fly.
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Airlines flying Denver to St Louis
Carriers on DEN–STL according to our route data and nonstop fares seen as of 22 Oct 2026. Not a complete list.
✈ United Airlinesnonstop fare seen✈ Southwest Airlinesnonstop fare seen
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Frequently asked questions — Denver to St Louis flights
How long is the flight from Denver to St Louis?
A nonstop flight from Denver (DEN) to St Louis (STL) takes about 2h 3m, covering 1,236 km. That is an estimate from the distance — actual time varies with the airline, aircraft and winds, and connecting itineraries take longer.
How far is Denver from St Louis by air?
The great-circle distance between Denver International Airport and St. Louis Lambert International Airport is 1,236 km (768 miles), a medium-haul route.
Which airlines fly from Denver to St Louis?
Airlines with flights or nonstop fares on the DEN–STL route include United Airlines and Southwest Airlines. This is not a complete list — schedules change by season, so check the current options before booking.
How much does a flight from Denver to St Louis cost?
The lowest one-way fare seen recently on DEN–STL was $156 USD with United Airlines (nonstop), departing 22 Nov 2026, found in fare searches as of 22 Oct 2026. Fares change constantly and depend on the date, so check the current price before booking.
Is it cheaper to fly nonstop or with a stop from Denver to St Louis?
In the fares we saw (22 Oct 2026), connecting was cheaper: from $105 with one stop against $156 nonstop, a saving of $51. Nonstop saves the connection time.
Do I need a visa to travel from Denver to St Louis?
It depends on your passport. Some nationalities can enter St Louis visa-free or get a visa on arrival; others must apply in advance. Use AirConnect's Visa Checker to see the rules for your passport.
Sources: fares from Travelpayouts flight-search data, seen 22 Oct 2026; airlines from each carrier's published network and nonstop fares on sale; distance from OurAirports coordinates; flight time estimated from distance. Fares change daily.
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