Flights from St. Louis to Denver

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Our cheapest offers for flights from St. Louis to Denver

Here you can compare cheap flights from St. Louis (STL) to Denver (DEN) for one-way or return trips. The following offers were searched for and found on idealo during the last few days. Or start your own flight search to Denver. Prices and availability may change at any time.

Best option
St. Louis
Denver
10/15/24
direct
F94477
02h 29min
10/31/24
direct
F93302
02h 07min
Frontier Airlines
$115
Found several days ago
 Check
St. Louis
Denver
10/15/24
direct
F94477
02h 29min
10/31/24
direct
F93302
02h 07min
Frontier Airlines
$119
Found several days ago
 Check
St. Louis
Denver
10/15/24
direct
F94477
02h 29min
10/31/24
direct
F93302
02h 07min
Frontier Airlines ?
$121
Found several days ago
 Check
St. Louis
Denver
10/15/24
direct
F94477
02h 29min
10/31/24
direct
F93302
02h 07min
Frontier Airlines ?
$122
Found several days ago
 Check
St. Louis
Denver
07/28/24
1 Stopover (LAS)
F93641, F94612
28h 25min
08/15/24
direct
F93302
02h 07min
Frontier Airlines ?
$186
Found several days ago
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St. Louis
Denver
07/28/24
direct
F93301
02h 24min
08/15/24
direct
F93302
02h 07min
Frontier Airlines
$189
Found several days ago
 Check
St. Louis
Denver
07/28/24
1 Stopover (LAS)
F93641, F94612
28h 25min
08/15/24
direct
F93302
02h 07min
Frontier Airlines ?
$192
Found several days ago
 Check
St. Louis
Denver
07/28/24
1 Stopover (LAS)
F93641, F91994
13h 36min
08/15/24
1 Stopover (LAS)
F92015, F92018
24h 18min
Frontier Airlines
$209
Found several days ago
 Check
St. Louis
Denver
10/15/24
direct
F94477
02h 29min
10/31/24
direct
F93302
02h 07min
Frontier Airlines ?
$218
Found several days ago
 Check
St. Louis
Denver
10/15/24
1 Stopover (ORD)
UA1717, UA1588
07h 27min
10/31/24
direct
UA0758
01h 58min
United Airlines ?
$261
Found several days ago
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Prices based on recent searches, subject to last-minute changes
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Tips and tricks to help you find cheap flights from St. Louis to Denver

Favorite airline: Frontier Airlines
100 % of bookings on this flight route are made with Frontier Airlines, United Airlines and Delta.
Frontier Airlines
55 %
United Airlines
36 %
Delta
9 %
Direct flights are cheaper
Direct flights on this route are $162.00 cheaper on average than flights with a stopover.
non stop flight
1 stop
02h 28min
08h 30min
$117
$279
The favorite connection is non-stop
Non-stop flights are especially popular on this route. 88 % of travelers will book a direct flight.
Route
bookings
Direct flights
02h 28min, from $117
88 %
1 stopover Detroit Metropolitan Wayne County Airport, MI
08h 30min, from $279
12 %

Flight information: St. Louis - Denver

Roundtrip from $114.52
Flight duration min. 02:20 / max. 11:15
Return flight duration min. 01:50/ max. 07:30
Distance 1237 km
Flights per week 123
Departure airport St. Louis - Lambert International Airport (STL)
Arrival airport Denver International Airport, CO (DEN)
Destination country United States
Alternative routes to United States
Alternative flights to Denver
Flight destinations with a similar price
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* Prices may vary, please check the travel details given by the online travel agency before booking. Prices include taxes.