The flight time from Denver to Seattle is 2 hours, 54 minutes. See Data as Tables

Average Timeline

Leaves DEN Denver, CO 1 minute early.
15 minutes taxiing out
2 hours, 28 minutes in the air
9 minutes taxiing in
Arrives SEA Seattle, WA 3 minutes early.

Flight Reliability By Airline ?


Flight Summary

The flight time from Denver to Seattle is 2 hours, 54 minutes. The time spent in the air is 2 hours, 28 minutes.

The flight distance from Denver to Seattle is 1024 Miles.

Reverse Journey

Seattle to Denver
2 hours, 35 minutes

Flight Time By Airline ?

2h 50m
2h 53m
2h 54m
2h 57m
2h 58m
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



1024 Miles

Flights By Month ?


Flights By Day of Week ?


Flights By Airline ?
(Per Week)


Frequently Asked Questions

How far is Denver from Seattle by plane?

The distance from Denver to Seattle 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 Denver to Seattle?

The flight time from Denver to Seattle is 2 hours, 54 minutes. The time spent in the air is 2 hours, 28 minutes. These numbers are averages. In reality, it varies by airline with Southwest being the fastest taking 2 hours, 50 minutes, and Alaska the slowest taking 2 hours, 58 minutes.

What airlines fly from Denver to Seattle?

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

Does Southwest fly from Denver to Seattle?

Yes! Southwest does fly from Denver (DEN) to Seattle (SEA). On average, they have 25 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 Denver 1 minute early
Taxi Out Time 15 minutes
In the Air 148 minutes
Taxiing In 9 minutes
Arrives Seattle 3 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 Denver to Seattle, 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
Delta 85% 15% 0%
Alaska 82% 16% 2%
Southwest 80% 19% 1%
United 79% 20% 1%
Frontier 71% 28% 1%

Flight Time By Airline Flight Time By Airline Chart

Each airline takes a different amount of time to fly between Denver and Seattle, 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 12 147 8 170
Delta 12 149 8 173
United 16 146 9 174
Frontier 15 147 11 177
Alaska 17 149 10 178

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
1pm 0.24
7pm 1.08
3pm 1.53
5pm 0.78
5am 0.01
10am 0.9
6am 1.99
8pm 0.81
6pm 1.2
10pm 1.53
11am 0.27
4pm 1.19
0am 0.01
7am 0.37
12pm 2.12
9pm 0.43
8am 2.16
9am 1.1
2pm 0.81

Flights By Month Flights By Month Chart

The quantity of flights from Denver to Seattle 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 498
February 438
March 475
April 489
May 575
June 651
July 704
August 689
September 638
October 593
November 526
December 560

Flights By Day Of Week Flights By Day of Week Chart

The quantity of flights from Denver to Seattle 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 19.35
Tuesday 18.98
Wednesday 19.23
Thursday 19.04
Friday 19.19
Saturday 17.04
Sunday 18.63

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
Alaska 1
United 1
Delta 1
Southwest 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
1pm 12 147 8 171
7pm 17 147 9 176
3pm 13 147 9 170
5pm 14 147 8 172
5am 10 144 14 169
10am 15 149 11 178
6am 16 148 10 178
8pm 16 146 9 176
6pm 14 149 8 174
10pm 14 143 8 167
11am 14 150 8 174
4pm 15 148 8 174
0am 16 156 6 178
7am 14 151 9 178
12pm 13 149 9 172
9pm 12 145 6 166
8am 17 150 11 179
9am 16 146 12 179
2pm 11 149 9 172
* Delayed more than 20 minutes.
All data above is a median or mean as appropriate.