| Outbound | Return | Airlines | Shop | Baggage | Price | ||
|---|---|---|---|---|---|---|---|
| St. Louis Denver | Outbound 07/25/25 direct F94567 02h 27min | Return 08/17/25 1 Stopover (MCO) F91734, F91631 22h 49min |  Frontier Airlines |  | $243 | ||
| Best option St. Louis Denver | Outbound 07/25/25 direct UA1464 02h 24min | Return 08/17/25 direct UA0652 02h 06min |  United Airlines |  | ? | $264 | |
| St. Louis Denver | Outbound 07/25/25 direct F94567 02h 27min | Return 08/17/25 1 Stopover (MCO) F91734, F91631 22h 49min | Frontier Airlines |  | $254 | ||
| St. Louis Denver | Outbound 09/19/25 direct UA5979 02h 26min | Return 09/29/25 direct UA1422 02h 06min | United Airlines | | ? | $266 | |
| St. Louis Denver | Outbound 07/25/25 direct F94567 02h 27min | Return 08/17/25 1 Stopover (CLT) AA2878, AA2497 07h 06min | Frontier Airlines |  | ? | $276 | |
| St. Louis Denver | Outbound 07/25/25 direct UA1464 02h 24min | Return 08/17/25 direct UA0652 02h 06min | United Airlines |  | ? | $279 | |
| St. Louis Denver | Outbound 09/19/25 1 Stopover (DFW) AA1363, AA0577 06h 36min | Return 09/29/25 1 Stopover (DFW) AA3264, AA1010 05h 27min |  American Airlines | | ? | $311 | |
| St. Louis Denver | Outbound 07/25/25 direct F94567 02h 27min | Return 08/17/25 1 Stopover (LAS) F90777, F93108 14h 13min | Frontier Airlines |  | $327 | ||
| St. Louis Denver | Outbound 09/19/25 1 Stopover (CLT) AA0831, AA3156 05h 55min | Return 09/29/25 1 Stopover (DFW) AA3215, AA1010 04h 29min | American Airlines |  | ? | $438 | |
| St. Louis Denver | Outbound 09/19/25 1 Stopover (SEA) AS0388, AS0642 09h 42min | Return 09/29/25 1 Stopover (SEA) AS0535, AS0472 07h 55min |  Alaska Airlines |  | ? | $443 |
Stops
- Direct flight
Airline
- United Airlines
- Frontier Airlines
- American Airlines
- Alaska Airlines
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 %
Important flight information
Flight information: St. Louis - Denver
| Roundtrip from | $242.54 |
|---|---|
| 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 | Airport St. Louis - Lambert International Airport (STL) |
| Arrival airport | Airport Denver International Airport, CO (DEN) |
| Destination country | Flights to United States |
Alternative routes to United States
- Flight St. Louis - New York from $281
- Flight St. Louis - Los Angeles from $341
- Flight St. Louis - Las Vegas from $267
- Flight St. Louis - Tampa from $294
- Flight St. Louis - San Francisco from $361
- Flight St. Louis - Orlando from $165
- Flight St. Louis - Fort Myers from $269
- Flight St. Louis - Chicago O'Hare from $182
- Flight St. Louis - Seattle-Tacoma from $235
- Flight St. Louis - Phoenix - Sky Harbor from $311
Alternative flights to Denver
- Flight New York - Denver from $219
- Flight San Francisco - Denver from $166
- Flight Chicago - Denver from $134
- Flight New York - Denver from $238
- Flight Miami - Denver from $182
- Flight Washington-DC - Denver from $193
- Flight Los Angeles - Denver from $136
- Flight Dallas - Denver from $129
- Flight Las Vegas - Denver from $136
- Flight Chicago O'Hare - Denver from $134
Flight destinations with a similar price
- Flight Denver - Istanbul from $821
- Flight Denver - London Heathrow from $534
- Flight Denver - Toronto from $172
- Flight Denver - Frankfurt from $713
- Flight Denver - Munich from $698
- Flight Denver - Muenster-Osnabrueck from $1,086
- Flight Denver - Hamburg from $677
- Flight Denver - Dusseldorf from $732
- Flight Denver - Cancun from $243
- Flight Denver - Puerto Vallarta from $288
Flight destinations with a similar price
- Flight St. Louis - Las Vegas from $267
- Flight St. Louis - Seattle-Tacoma from $235
- Flight St. Louis - Minneapolis from $264
- Flight St. Louis - Jacksonville, Florida from $245