SEADEN
Seattle (Seattle-Tacoma International Airport) to Denver (Denver International Airport).
The flight from Seattle (SEA) to Denver (DEN) takes 2h 8m on average, covering about 1,086 miles. Across 4 flights we tracked, the fastest was 2h 8m and the slowest 2h 8m, with Alaska Airlines flying it most often.
Plan this routeAt a glance
| Avg flight time | Distance | Fastest tracked | Airlines |
|---|---|---|---|
| 2h 8m | 1,086 mi | 2h 8m | 2 |
Airlines on this route
Captured airlines for SEA to DEN
Our current provider sample includes 22-23/day from SEA to DEN across 6 captured airlines.
- First departure
- 05:00
- Last departure
- 20:07
- Cadence
- ~every 30 min
- Captured departures/day
- 48
| Airline | Captured daily freq. | Aircraft | Departures (local) |
|---|---|---|---|
| United Airlines | 6-7/day | Airbus A320 family, Boeing 737 · Seat map | 05:0708:56 |
Aircraft we tracked
Flying the other way?
DEN to SEA flight time (7 tracked flights) →Flight times usually differ by direction — jet-stream winds make eastbound crossings faster than westbound ones.
Methodology: figures are aggregated from 4 real flights on this route tracked between 2026-06-10 and 2026-06-16, sourced from live flight data. Updated daily as new flights are observed.
Route FAQ
How long is the flight from SEA to DEN?
The SEA to DEN flight takes 2h 8m on average based on 4 tracked flights.
How far is SEA from DEN?
SEA to DEN is about 1,086 miles by air.
Which airlines fly from SEA to DEN?
Alaska Airlines, Southwest Airlines fly the SEA to DEN route in our tracked route data.
What aircraft fly from SEA to DEN?
Aircraft observed on SEA to DEN include Boeing 737-900, Boeing 737-800.