Cheap flights from St. Louis to Denver

Round-trip
Economy
St. Louis (STL)
Denver (DEN)
Sat 6/27
Sat 7/4
Any month
Compare vs. momondo |

Flight information for St. Louis to Denver
(STL to DEN)

Find info about flight duration, direct flights, and airports for your flight from St. Louis to Denver
Best Price Found $133 The best flight deal from St. Louis to Denver found on momondo in the last 72 hours is $133
Fastest flight time 2h 29m The fastest flight from St. Louis to Denver takes 2h 29m.
Direct flights None There are no direct flights from St. Louis to Denver. Popular non-direct route for this connection is Lambert-St Louis - Denver Intl.
Airports in Denver 2 airports There are 2 airports near Denver: Denver Arapahoe Co (APA), Denver Intl (DEN)

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

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 to Denver?
April
The cheapest time of year to fly to Denver from St. Louis is April. Most expensive is December
What is the cheapest day to fly to Denver?
Wednesday
The cheapest day of the week is typically Wednesday. The most expensive is typically Sunday
When is the cheapest time to fly to Denver?
in the evening
St. Louis to Denver flights are approximately 37% more expensive at noon than in the evening
What is the cheapest airline that flies to Denver?
Frontier
Frontier, American Airlines, and Delta are the most popular carriers operating from St. Louis to Denver
What is the cheapest route?
Lambert-St Louis - Denver Intl
Fly from Lambert-St Louis to Denver Intl for the best St. Louis - Denver flight prices
STL
Lambert-St Louis
DEN
Denver Intl
When is the cheapest time to book a flight to Denver?
42 days before
The cheapest time to buy a flight from St. Louis to Denver is approximately 42 days to departure
60
Days before departure
0

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

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 St. Louis to Denver by changing tabs
Cheapest
Best
Quickest
Multiple Airlines
Jul 9
STL
Lambert-St Louis
2h 32m
DEN
Denver Intl
Jul 12
DEN
Denver Intl
14h 34m
1 stop
STL
Lambert-St Louis
Sun Country Air
Jul 17
STL
Lambert-St Louis
17h 51m
1 stop
DEN
Denver Intl
Jul 26
DEN
Denver Intl
14h 34m
1 stop
STL
Lambert-St Louis
Multiple Airlines
Jul 16
STL
Lambert-St Louis
2h 32m
DEN
Denver Intl
Jul 19
DEN
Denver Intl
14h 34m
1 stop
STL
Lambert-St Louis

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

If you're looking for one-way flights from St. Louis to Denver, view some of our deals below provided by Sun Country Air
Cheapest
Best
Quickest
Sun Country Air
Jul 17
STL
Lambert-St Louis
17h 51m
1 stop
DEN
Denver Intl
Multiple Airlines
Jul 14
STL
Lambert-St Louis
21h 59m
3 stops
DEN
Denver Intl
Delta
Jul 14
STL
Lambert-St Louis
5h 20m
1 stop
DEN
Denver Intl

Alternative routes for St. Louis to Denver

Compare alternative flights to and from nearby airports and cities to discover the best prices and most convenient flight times
Kansas City to Denver Flights
Fastest flight time
1h 48m
Cheapest price
$110
Kansas City to Colorado Springs Flights
Fastest flight time
4h 25m
Cheapest price
$181
St. Louis to Colorado Springs Flights
Fastest flight time
5h 22m
Cheapest price
$211
Joplin to Denver Flights
Fastest flight time
9h 42m
Cheapest price
$460
View more

Flights from St. Louis to:

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  • First
Economy
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  • First
Economy
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  • First
Economy
  • Economy
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  • Business
  • First