Cheap flights from Denver to St. Louis

Round-trip
Economy
Denver (APA)
St. Louis (STL)
Sat 1/2
Sat 1/9
Any month
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Flight information for Denver to St. Louis
(DEN to STL)

Find info about flight duration, direct flights, and airports for your flight from Denver to St. Louis
Best Price Found $72 The best flight deal from Denver to St. Louis found on momondo in the last 72 hours is $72
Fastest flight time 2h 0m The fastest flight from Denver to St. Louis takes 2h 0m.
Direct flights Fr Direct flights go from Denver to St. Louis on Friday. Airline offering direct flights is Frontier..
Airports in St. Louis 1 airport There is 1 airport near St. Louis: Lambert-St Louis (STL)

How to get the cheapest flight ticket from Denver to St. Louis

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip
What is the cheapest month to fly from Denver to St. Louis?
October
The cheapest time of year to fly to St. Louis from Denver is October. Most expensive is December
What is the cheapest day to depart Denver for St. Louis?
Saturday
The cheapest day of the week is typically Saturday. The most expensive is typically Monday
When is the cheapest time to fly from Denver to St. Louis?
in the evening
Denver to St. Louis flights are approximately 37% more expensive in the afternoon than in the evening
What is the cheapest airline that flies to St. Louis from Denver?
Frontier
Frontier, Sun Country Air, and American Airlines are the most popular carriers operating from Denver to St. Louis
What is the cheapest Denver to St. Louis flight route?
Denver Intl - Lambert-St Louis
Fly from Denver Intl to Lambert-St Louis for the best Denver - St. Louis flight prices
DEN
Denver Intl
STL
Lambert-St Louis
How far in advance should you book Denver to St. Louis flights?
14 days before
The cheapest time to buy a flight from Denver to St. Louis is approximately 14 days to departure
60
Days before departure
0

Easily compare round-trip flights from Denver to St. Louis

Below you can see the best fares for your round-trip flight route over the next three months. All fares were found on momondo this week. Browse the quickest and cheapest flights from Denver to St. Louis by changing tabs
Cheapest
Best
Quickest
Frontier
Jan 14
DEN
Denver Intl
1h 58m
STL
Lambert-St Louis
Jan 18
STL
Lambert-St Louis
2h 28m
DEN
Denver Intl
Multiple Airlines
Jan 29
DEN
Denver Intl
1h 58m
STL
Lambert-St Louis
Jan 31
STL
Lambert-St Louis
2h 30m
DEN
Denver Intl
Frontier
Jan 11
DEN
Denver Intl
2h 02m
STL
Lambert-St Louis
Jan 18
STL
Lambert-St Louis
2h 28m
DEN
Denver Intl

Find the cheapest one-way flights from Denver to St. Louis

If you're looking for one-way flights from Denver to St. Louis, view some of our deals below provided by Frontier
Cheapest
Best
Quickest
Frontier
Jan 7
DEN
Denver Intl
1h 58m
STL
Lambert-St Louis
United Airlines
Dec 25
DEN
Denver Intl
2h 11m
STL
Lambert-St Louis
American Airlines
Dec 11
DEN
Denver Intl
6h 59m
1 stop
STL
Lambert-St Louis

Which airlines flying from Denver Intl to Lambert-St Louis have COVID-19 safety policies in place?

Many airlines have put safety measures in place to reduce the spread of COVID-19. One is Delta. When flying from Denver Intl to Lambert-St Louis, expect masks to be provided - they are required onboard. Aircrafts are also being cleaned thoroughly with enhanced products regularly. Additional policies include the installation of HEPA filters and pre-flight testing. Some airlines are even offering socially-distanced seating for a limited time. Keep in mind that policies will vary by airline.

Are airlines flying from Denver Intl to Lambert-St Louis offering flexible cancellation due to COVID-19?

Some of our partner airlines flying from Denver Intl to Lambert-St Louis are adopting new policies due to the global impact of COVID-19. Some of the airlines that may be waiving their cancellation fees are Frontier, United Airlines, and American Airlines. You can search for the full list of airlines like Frontier that are offering this flexibility.


Alternative routes for Denver to St. Louis

Compare alternative flights to and from nearby airports and cities to discover the best prices and most convenient flight times
Denver to Kansas City Flights
Fastest flight time
1h 32m
Cheapest price
$72
Colorado Springs to Kansas City Flights
Fastest flight time
4h 37m
Cheapest price
$157
Colorado Springs to St. Louis Flights
Fastest flight time
4h 14m
Cheapest price
$266

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