Search flights from Saint Louis (STL) to Denver (DEN)

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Cheapest flights to Denver

The cheapest flights available in the next 60 days – prices are updated regularly

Flying from Saint Louis to Denver: things to know

The most popular route is from Lambert- St.Louis International Airport in Saint Louis to Denver International Airport in Denver. On average this flight takes 2 hours 42 minutes one way and costs US$451 for the round trip.

Most popular route
Lambert- St.Louis International Airport (STL) to Denver International Airport (DEN)
Average flight time
2 hours 42 minutes
Average round-trip price
US$451
Fly from Saint Louis to Denver
4 airlines

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Airlines that fly from Saint Louis to Denver

Airline options may vary according to recently booked flights and your search terms

  • Frontier Airlines
  • United Airlines
  • American Airlines
  • Southwest Airlines

Frequently asked questions

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Hotels in Denver

Thinking about which towns and cities to visit during your trip? Try Denver, a popular choice with other visitors.

Flights to Denver International Airport

Jet into this airport to explore Denver at your leisure.

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Flights to Colorado

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