The flight time from St. Louis to Denver is 2 hours, 16 minutes. See Data as Tables

Average Timeline

Leaves STL St. Louis, MO on time.
12 minutes taxiing out
1 hour, 54 minutes in the air
7 minutes taxiing in
Arrives DEN Denver, CO 4 minutes early.

Flight Reliability By Airline ?

United
83%
Southwest
81%
Frontier
79%
Cancelled
Delayed*
Normal

Flight Summary

The flight time from St. Louis to Denver is 2 hours, 16 minutes. The time spent in the air is 1 hour, 54 minutes.

The flight distance from St. Louis to Denver is 770 Miles.

Reverse Journey

Denver to St. Louis
1 hour, 55 minutes

Flight Time By Airline ?

Southwest
2h 13m
United
2h 21m
Frontier
2h 22m
Taxiing Out
Air Time
Taxiing In

Flight Time by Time of Day ?

12AM06AM12PM06PM 30m1h1h 30m2h
Taxiing Out
Air Time
Taxiing In

Flights By Time of Day ?
(Average)

12AM06AM12PM06PM0.00.51.01.52.0

Flights Per Week

77

Distance

770 Miles

Flights By Month ?

JFMAMJJASOND0100200300

Flights By Day of Week ?
(Average)

MonTueWedThuFriSatSun0510

Flights By Airline ?
(Per Week)

Southwest
41
United
26
Frontier
9

Frequently Asked Questions

How far is St. Louis from Denver by plane?

The distance from St. Louis to Denver by plane is 770 Miles. This is the air distance on the most direct route taken by the vast majority of flights.

How long is the flight from St. Louis to Denver?

The flight time from St. Louis to Denver is 2 hours, 16 minutes. The time spent in the air is 1 hour, 54 minutes. These numbers are averages. In reality, it varies by airline with Southwest being the fastest taking 2 hours, 13 minutes, and Frontier the slowest taking 2 hours, 22 minutes.

What airlines fly from St. Louis to Denver?

Frontier, United, and Southwest are the airlines with direct flights from St. Louis to Denver.

Does Southwest fly from St. Louis to Denver?

Yes! Southwest does fly from St. Louis (STL) to Denver (DEN). On average, they have 41 flights per week on this route. This may vary seasonally, please check the chart above for more details.

Tables and Explanations

Data Source

Our information is computed from the latest available data from the US Department of Transportation.

Average Timeline Timeline Chart

The average timeline contains the median time a flight spends in 3 stages. The first of these three stages is taxiing out which includes the time from the flight leaving the gate to taking off. The second stage is in the air, which includes the time spent from the flight leaving the ground to touching back down at the end of it's journey. The last stage is taxiing in, which is from when the flight touches down to the flight arriving at it's gate.

The average timeline also estimates on average of when the flight will leave and arrive relative to it's stated departure time.

Leaves St. Louis on time
Taxi Out Time 12 minutes
In the Air 114 minutes
Taxiing In 7 minutes
Arrives Denver 4 minutes early

Flight Reliability Reliability Chart

The reliability of an airline measures how often the airline's flights on this route are cancelled or delayed more than 20 minutes. For example, from St. Louis to Denver, Southwest is 81% reliable, which means that Southwest flights are on time 81% of the time, and cancelled or delayed the remaining time.

Airline Normal Flights Arrival Delayed* Flight Cancelled
United 83% 16% 1%
Southwest 81% 18% 1%
Frontier 79% 19% 2%

Flight Time By Airline Flight Time By Airline Chart

Each airline takes a different amount of time to fly between St. Louis and Denver, this is due to different operational factors on the ground, as well as scheduling of planes. Each airline's flight time is split into three stages which are described above in the "Average Timeline" section. There are also miscellaneous operational issues which are included in the below total but are not accounted for in one of the three stages.

Airline Taxiing Out
(minutes)
In the Air
(minutes)
Taxiing In
(minutes)
Total
(minutes)
Southwest 11 114 6 133
United 13 116 8 141
Frontier 14 114 12 142

Flights By Time of Day Flight Time By Day Chart

This one is pretty self explanatory, it represents the number of flights that leave the gate in a given hour of the day. The tricky thing here is that this is normally not a whole number since it is an average over 52 weeks. Partial numbers may indicate that a flight may be seasonal or may take off at different times due to different operational factors.

Time Count
10am 0.39
5am 1.25
10pm 0.28
2pm 0.32
9pm 0.56
1pm 1.53
11am 0.6
8am 1.25
7pm 0.33
12pm 0.13
4pm 1.45
6am 0.48
9am 0.57
11pm 0.04
5pm 0.21
3pm 0.36
8pm 0.54
6pm 0.4
7am 0.24

Flights By Month Flights By Month Chart

The quantity of flights from St. Louis to Denver that take off in a given month of the year. This number changes because some flights are seasonal, and almost all flights have uneven demand througout the year.

Month Count
January 268
February 260
March 310
April 308
May 325
June 342
July 377
August 391
September 360
October 387
November 354
December 372

Flights By Day Of Week Flights By Day of Week Chart

The quantity of flights from St. Louis to Denver that take off on a given day of the week. Some routes only have enough demand to sustain a few trips a week, while others have many flights a day. This number is also an average across the year, and hence may not be a whole number.

Day Count
Monday 11.4
Tuesday 11.35
Wednesday 11.46
Thursday 11.33
Friday 11.4
Saturday 9.46
Sunday 11.56

Flight per Airline (per Week) Flights By Airline Chart

How many times an airline flies this route in a week. Different factors play into how often a carrier chooses to fly a given route including it's need to connect disparate routes, and demand.

Airline Flights per Week
Southwest 1
United 1
Frontier 0

Flight Time By Time of Day Flight Time by Time of Day Chart

The total flight time varies by each hour of the day due to factors such as airport traffic. More flights leaving an airport may cause higher taxi in or taxi out times. See the description of the average timeline above for a deeper discussion of each of these times.

Time Taxi Out
(minutes)
In the Air
(minutes)
Taxi In
(minutes)
Total
(minutes)
10am 12 117 8 139
5am 12 114 7 134
10pm 11 114 8 133
2pm 12 114 8 136
9pm 11 114 8 137
1pm 12 115 7 134
11am 10 114 6 131
8am 13 116 7 141
7pm 11 113 7 133
12pm 11 109 6 127
4pm 14 116 9 143
6am 14 112 9 137
9am 13 111 8 134
11pm 12 112 14 153
5pm 10 118 7 138
3pm 13 113 7 136
8pm 11 115 8 137
6pm 11 114 6 133
7am 12 114 7 136
* Delayed more than 20 minutes.
All data above is a median or mean as appropriate.