The flight time from Seattle to Denver is 2 hours, 33 minutes. See Data as Tables

Average Timeline

Leaves SEA Seattle, WA 2 minutes early.
16 minutes taxiing out
2 hours, 7 minutes in the air
7 minutes taxiing in
Arrives DEN Denver, CO 7 minutes early.

Flight Reliability By Airline ?


Flight Summary

The flight time from Seattle to Denver is 2 hours, 33 minutes. The time spent in the air is 2 hours, 7 minutes.

The flight distance from Seattle to Denver is 1024 Miles.

Reverse Journey

Denver to Seattle
2 hours, 52 minutes

Flight Time By Airline ?

2h 28m
2h 32m
2h 32m
2h 35m
2h 39m
Taxiing Out
Air Time
Taxiing In

Flight Time by Time of Day ?

12AM06AM12PM06PM 30m1h1h 30m2h2h 30m
Taxiing Out
Air Time
Taxiing In

Flights By Time of Day ?


Flights Per Week



1024 Miles

Flights By Month ?


Flights By Day of Week ?


Flights By Airline ?
(Per Week)


Frequently Asked Questions

How far is Seattle from Denver by plane?

The distance from Seattle to Denver by plane is 1024 Miles. This is the air distance on the most direct route taken by the vast majority of flights.

How long is the flight from Seattle to Denver?

The flight time from Seattle to Denver is 2 hours, 33 minutes. The time spent in the air is 2 hours, 7 minutes. These numbers are averages. In reality, it varies by airline with Southwest being the fastest taking 2 hours, 28 minutes, and Delta the slowest taking 2 hours, 39 minutes.

What airlines fly from Seattle to Denver?

Delta, Frontier, Southwest, Alaska, and United are the airlines with direct flights from Seattle to Denver.

Does Southwest fly from Seattle to Denver?

Yes! Southwest does fly from Seattle (SEA) to Denver (DEN). On average, they have 31 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 Seattle 2 minutes early
Taxi Out Time 16 minutes
In the Air 127 minutes
Taxiing In 7 minutes
Arrives Denver 7 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 Seattle to Denver, Delta is 85% reliable, which means that Delta flights are on time 85% of the time, and cancelled or delayed the remaining time.

Airline Normal Flights Arrival Delayed* Flight Cancelled
United 89% 10% 1%
Delta 85% 13% 2%
Alaska 83% 15% 2%
Frontier 82% 16% 2%
Southwest 79% 18% 3%

Flight Time By Airline Flight Time By Airline Chart

Each airline takes a different amount of time to fly between Seattle 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 13 126 6 148
United 15 127 7 152
Frontier 15 124 10 152
Alaska 19 127 7 155
Delta 16 131 8 159

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
7pm 1.58
6am 0.56
6pm 1.18
9am 0.87
2pm 0.47
8am 1.27
5pm 0.34
7am 1.15
8pm 0.46
11am 1.84
3pm 1.21
1pm 1.79
9pm 0.35
4pm 0.82
12pm 0.67
0am 0.43
5am 1.41
10am 0.79

Flights By Month Flights By Month Chart

The quantity of flights from Seattle 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 468
February 335
March 435
April 447
May 503
June 619
July 677
August 690
September 629
October 585
November 523
December 497

Flights By Day Of Week Flights By Day of Week Chart

The quantity of flights from Seattle 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 18.75
Tuesday 17.35
Wednesday 16.81
Thursday 17.63
Friday 18.19
Saturday 16.52
Sunday 17.98

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 1
Alaska 1
Delta 0
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
In the Air
Taxi In
7pm 16 125 7 151
6am 14 126 6 148
6pm 15 126 7 150
9am 16 129 7 155
2pm 13 125 7 149
8am 17 127 7 153
5pm 13 124 7 147
7am 19 130 7 158
8pm 15 124 7 149
11am 19 130 7 158
3pm 15 130 8 156
1pm 16 130 7 154
9pm 13 124 6 146
4pm 17 128 9 157
12pm 16 126 7 152
0am 12 123 9 145
5am 13 127 7 148
10am 18 127 7 154
* Delayed more than 20 minutes.
All data above is a median or mean as appropriate.