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DEN (Denver) to STL (St. Louis) Flights $134.4

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Cheap DEN to STL Flights

Prices found within past 7 days. Prices and availability subject to change. Additional terms may apply.

Interesting Facts About Flights from Denver to St. Louis (DEN to STL)

Question : Do travelers from Denver typically stay in Saint Louis for very long?
Answer : Travelers from DEN to STL stay four days on average.

Question : Is there a preferred airline for getting to Lambert-St. Louis International Airport (STL) on schedule?
Answer : ExpressJet holds the best record for flights from DEN to STL with a 100% on-time rate. Hopefully they keep that perfect record alive.

Question : About how long is the flight from Denver to Saint Louis?
Answer : The average flight duration between DEN and STL is two hours and one minute.

Question : Best case scenario, how quickly can someone get from DEN to STL?
Answer : Southwest Airlines can get you there in one hour and 50 minutes. For example, if you were to leave Denver at 2:25 PM MDT, you would arrive in Saint Louis at 5:15 PM CDT (remember, there is a one-hour time change).

Question : Who's offering the cheapest round-trip flight to Lambert-St. Louis International Airport (STL) over the coming months?
Answer : Frontier Airlines is the leader in keeping costs down for their passengers over the next three months. Bookings are being made at just $78 and, when compared to the more expensive bookings of $999, it's quite a deal.

Question : What day of the week has the most flight time options?
Answer : With 17 total flight time options, Thursday provides the most flexibility from DEN to STL. The day of the week with the fewest number of options is Tuesday with 10 different times.

Question : Who struggles with getting their passengers to Lambert-St. Louis International Airport (STL) on time?
Answer : 100% of UPS flights from Denver International Airport (DEN) to Lambert-St. Louis International Airport (STL) are delayed. If you’re on UPS, be sure to sign up for the delay notifications to stay up to date with your flight’s status.