The flight time from Washington to Denver is 3 hours, 45 minutes. See Data as Tables

Average Timeline

Leaves IAD Washington, DC on time.
15 minutes taxiing out
3 hours, 18 minutes in the air
8 minutes taxiing in
Arrives DEN Denver, CO 6 minutes early.

Flight Reliability By Airline ?


Flight Summary

The flight time from Washington to Denver is 3 hours, 45 minutes. The time spent in the air is 3 hours, 18 minutes.

The flight distance from Washington to Denver is 1452 Miles.

Reverse Journey

Denver to Washington
3 hours, 10 minutes

Flight Time By Airline ?

3h 42m
3h 45m
Taxiing Out
Air Time
Taxiing In

Flight Time by Time of Day ?

Taxiing Out
Air Time
Taxiing In

Flights By Time of Day ?


Flights Per Week



1452 Miles

Flights By Month ?


Flights By Day of Week ?


Flights By Airline ?
(Per Week)


Frequently Asked Questions

How far is Washington from Denver by plane?

The distance from Washington to Denver by plane is 1452 Miles. This is the air distance on the most direct route taken by the vast majority of flights.

How long is the flight from Washington to Denver?

The flight time from Washington to Denver is 3 hours, 45 minutes. The time spent in the air is 3 hours, 18 minutes. These numbers are averages. In reality, it varies by airline with Southwest being the fastest taking 3 hours, 42 minutes, and United the slowest taking 3 hours, 45 minutes.

What airlines fly from Washington to Denver?

United and Southwest are the airlines with direct flights from Washington to Denver.

Does Southwest fly from Washington to Denver?

Yes! Southwest does fly from Washington (IAD) to Denver (DEN). On average, they have 11 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 Washington on time
Taxi Out Time 15 minutes
In the Air 198 minutes
Taxiing In 8 minutes
Arrives Denver 6 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 Washington to Denver, Southwest is 82% reliable, which means that Southwest flights are on time 82% of the time, and cancelled or delayed the remaining time.

Airline Normal Flights Arrival Delayed* Flight Cancelled
United 83% 16% 1%
Southwest 82% 18% 0%

Flight Time By Airline Flight Time By Airline Chart

Each airline takes a different amount of time to fly between Washington 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
In the Air
Taxiing In
Southwest 11 202 6 222
United 17 197 8 225

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
6pm 0.54
11am 0.32
4pm 0.75
6am 0.05
5pm 1.04
8am 0.98
12pm 1.43
7pm 0.13
7am 0.08
10pm 0.52
3pm 0.35
2pm 0.21
1pm 0.01
5am 0.06
10am 1

Flights By Month Flights By Month Chart

The quantity of flights from Washington 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 196
February 168
March 205
April 210
May 264
June 237
July 262
August 274
September 248
October 250
November 204
December 234

Flights By Day Of Week Flights By Day of Week Chart

The quantity of flights from Washington 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 7.65
Tuesday 7.56
Wednesday 7.56
Thursday 7.67
Friday 7.77
Saturday 7.27
Sunday 7.44

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
United 1
Southwest 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
In the Air
Taxi In
6pm 13 201 6 224
11am 11 202 6 222
4pm 16 202 9 230
6am 11 195 7 215
5pm 20 197 8 228
8am 18 195 10 227
12pm 15 198 7 222
7pm 12 201 7 225
7am 11 196 8 219
10pm 17 193 7 217
3pm 16 209 11 241
2pm 12 199 7 220
1pm 12 194 6 214
5am 10 199 6 216
10am 13 198 7 220
* Delayed more than 20 minutes.
All data above is a median or mean as appropriate.