Flights from St Louis Airport STL to Denver Airport DEN

We've found the cheapest flights to Denver

Returns from £95.12

One-way from £54.99

Flights from Lambert-St. Louis International to Denver International are operated by 5 airliners including Frontier, United Express, United Airlines, Air Canada and Southwest Airlines. The flight time is approximately 2 Hours 16 Minutes.

The cost of the flights varies significantly so we can’t provide you an estimate. Prices can be 50% cheaper if you book more than a month in advance. The cheapest flights available will generally be mid week or late in the evening, so if you are on a budget then these are the flight times you should consider. Alternatively, you could book well in advance and you flight could be up to 50% cheaper, especially with budget airliners. We recommend our viewers to pay and reserve the seats in advance. This ensures you get the best seats on the plane at the cheapest prices.

The time zone at Denver International is different from Lambert-St. Louis International, so please be aware of this when making travel arrangements.

Please see below the airlines that fly from Lambert-St. Louis International (STL) to Denver International (DEN) and the amount of daily flights in operation.

Flights Chart
AirlinerMoTuWeThFrSaSuFirst FlightLast FlightFlights
Southwest Airlines877775800:0522:45VIEW FLIGHTS
Air Canada444444405:2016:32VIEW FLIGHTS
United Airlines333333309:1016:32VIEW FLIGHTS
United Express111111105:2005:20VIEW FLIGHTS
Frontier101011019:2919:29VIEW FLIGHTS

Most people choose to fly with Southwest Airlines. They offer the largest number of flights so they have times which are most likely to suite you. The flights they offer will go by the flight numbers WN126, WN1817, WN2036 and WN2378 with times between 00:05 and 22:45.

If you would like more information on this flight the please visit the website for Southwest Airlines at www.southwest.com/?ref=southwestairlines.com. You will be able to find the latest availability, prices and make your booking online.

Flight times for the route are summarised in the table below. These time were correct at the time of writing, but please be aware that times may vary from time to time so please check their website for exact times and the dates you wish to fly.

Flights Time In WeekDays
DayFlight TimesFlights
Monday
00:05
AirlineFlight  No
Southwest AirlinesWN4617
05:20
AirlineFlight  No
Air CanadaAC4569
Southwest AirlinesWN2378
United ExpressUA5979
07:30
AirlineFlight  No
Southwest AirlinesWN259
09:10
AirlineFlight  No
United AirlinesUA1396
Air CanadaAC4948
09:50
AirlineFlight  No
Southwest AirlinesWN2036
12:25
AirlineFlight  No
Southwest AirlinesWN3745
13:42
AirlineFlight  No
United AirlinesUA2625
Air CanadaAC4886
15:35
AirlineFlight  No
Southwest AirlinesWN3114
16:32
AirlineFlight  No
United AirlinesUA431
Air CanadaAC4897
16:50
AirlineFlight  No
Southwest AirlinesWN2811
18:45
AirlineFlight  No
Southwest AirlinesWN4616
19:29
AirlineFlight  No
FrontierF94567
VIEW FLIGHTS
Tuesday
05:20
AirlineFlight  No
Air CanadaAC4569
United ExpressUA5979
05:30
AirlineFlight  No
Southwest AirlinesWN259
07:15
AirlineFlight  No
Southwest AirlinesWN2036
09:00
AirlineFlight  No
Southwest AirlinesWN2378
09:10
AirlineFlight  No
United AirlinesUA1396
Air CanadaAC4948
12:40
AirlineFlight  No
Southwest AirlinesWN2793
13:42
AirlineFlight  No
United AirlinesUA2625
Air CanadaAC4886
14:25
AirlineFlight  No
Southwest AirlinesWN2844
16:05
AirlineFlight  No
Southwest AirlinesWN2811
16:32
AirlineFlight  No
United AirlinesUA431
Air CanadaAC4897
18:15
AirlineFlight  No
Southwest AirlinesWN4616
VIEW FLIGHTS
Wednesday
05:20
AirlineFlight  No
Air CanadaAC4569
United ExpressUA5979
05:30
AirlineFlight  No
Southwest AirlinesWN259
07:15
AirlineFlight  No
Southwest AirlinesWN2036
09:00
AirlineFlight  No
Southwest AirlinesWN2378
09:10
AirlineFlight  No
United AirlinesUA1396
Air CanadaAC4948
12:40
AirlineFlight  No
Southwest AirlinesWN2793
13:42
AirlineFlight  No
United AirlinesUA2625
Air CanadaAC4886
14:25
AirlineFlight  No
Southwest AirlinesWN2844
16:05
AirlineFlight  No
Southwest AirlinesWN2811
16:32
AirlineFlight  No
United AirlinesUA431
Air CanadaAC4897
18:15
AirlineFlight  No
Southwest AirlinesWN4616
19:29
AirlineFlight  No
FrontierF94567
VIEW FLIGHTS
Thursday
05:20
AirlineFlight  No
Air CanadaAC4569
Southwest AirlinesWN2378
United ExpressUA5979
07:30
AirlineFlight  No
Southwest AirlinesWN259
09:10
AirlineFlight  No
United AirlinesUA1396
Air CanadaAC4948
09:50
AirlineFlight  No
Southwest AirlinesWN2036
12:25
AirlineFlight  No
Southwest AirlinesWN3745
13:42
AirlineFlight  No
United AirlinesUA2625
Air CanadaAC4886
15:35
AirlineFlight  No
Southwest AirlinesWN3114
16:32
AirlineFlight  No
United AirlinesUA431
Air CanadaAC4897
16:50
AirlineFlight  No
Southwest AirlinesWN2811
18:45
AirlineFlight  No
Southwest AirlinesWN4616
VIEW FLIGHTS
Friday
05:20
AirlineFlight  No
Air CanadaAC4569
Southwest AirlinesWN2378
United ExpressUA5979
07:30
AirlineFlight  No
Southwest AirlinesWN259
09:10
AirlineFlight  No
United AirlinesUA1396
Air CanadaAC4948
09:50
AirlineFlight  No
Southwest AirlinesWN2036
12:25
AirlineFlight  No
Southwest AirlinesWN3745
13:42
AirlineFlight  No
United AirlinesUA2625
Air CanadaAC4886
15:35
AirlineFlight  No
Southwest AirlinesWN3114
16:32
AirlineFlight  No
United AirlinesUA431
Air CanadaAC4897
16:50
AirlineFlight  No
Southwest AirlinesWN2811
18:45
AirlineFlight  No
Southwest AirlinesWN4616
19:29
AirlineFlight  No
FrontierF94567
VIEW FLIGHTS
Saturday
05:20
AirlineFlight  No
Air CanadaAC4569
Southwest AirlinesWN2378
United ExpressUA5979
08:35
AirlineFlight  No
Southwest AirlinesWN259
09:10
AirlineFlight  No
United AirlinesUA1396
Air CanadaAC4948
13:42
AirlineFlight  No
United AirlinesUA2625
Air CanadaAC4886
14:30
AirlineFlight  No
Southwest AirlinesWN3114
16:32
AirlineFlight  No
United AirlinesUA431
Air CanadaAC4897
18:05
AirlineFlight  No
Southwest AirlinesWN4616
19:29
AirlineFlight  No
FrontierF94567
21:10
AirlineFlight  No
Southwest AirlinesWN4617
VIEW FLIGHTS
Sunday
05:20
AirlineFlight  No
Air CanadaAC4569
United ExpressUA5979
05:45
AirlineFlight  No
Southwest AirlinesWN2378
07:30
AirlineFlight  No
Southwest AirlinesWN259
09:10
AirlineFlight  No
United AirlinesUA1396
Air CanadaAC4948
09:25
AirlineFlight  No
Southwest AirlinesWN3114
11:55
AirlineFlight  No
Southwest AirlinesWN126
13:42
AirlineFlight  No
United AirlinesUA2625
Air CanadaAC4886
14:20
AirlineFlight  No
Southwest AirlinesWN4616
16:32
AirlineFlight  No
United AirlinesUA431
Air CanadaAC4897
16:55
AirlineFlight  No
Southwest AirlinesWN2811
19:25
AirlineFlight  No
Southwest AirlinesWN1817
22:45
AirlineFlight  No
Southwest AirlinesWN4617
VIEW FLIGHTS

Flights to Denver International are also available from airports close to Lambert-St. Louis International. Below we have provided a short list of routes which you could consider is you feel that are suitable.

Alternative Direct Routes
RouteStopsDistanceFlying Time
Peoria to Denver02 Hours 18 Minutes

Before you start your journey remember to check you have all your documents; in particular, your passport and flight tickets. You will be surprised at the amount of people of forget these!

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Flight Price FAQ - St Louis (STL) to Denver (DEN)

DIRECT Frontier Airlines
What is the cheapest direct flight one way from St Louis STL to Denver DEN?
The cheapest direct flight one way from St Louis STL to Denver DEN is £54.99 ($74 €64.21)
£54.99
$74 | €64.21
Check Latest Price
DIRECT Frontier Airlines
What is the cheapest direct return flight from St Louis STL to Denver DEN?
The cheapest direct return flight from St Louis STL to Denver DEN is £95.12 ($128 €111.07)
£95.12
$128 | €111.07
Check Latest Price
Important Note: Prices shown are taken from searches performed for flights operating during the current month. Please use the "Latest Price" buttons to get the most up to date airfares.

Compare Flight Prices from STL to DEN

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Flight Info FAQ - St Louis (STL) to Denver (DEN)

Who flies from St Louis to Denver?
The following airlines fly from St Louis (STL) to Denver (DEN): Air Canada, Frontier, Southwest Airlines, United Airlines, United Express.
How far is the flight from St Louis to Denver?
The flight from St Louis to Denver is 1,235KM or 768 miles.
How long does the flight from St Louis to Denver to take?
The flight from St Louis to Denver takes 2 Hours 16 Minutes.

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