Seattle to Denver
2h 28mgate to gate
The flight from Seattle–Tacoma International Airport (SEA) to Denver International Airport (DEN) covers 1,645 km (1,022 miles) and takes approximately 2h 28m gate to gate for a typical jet.
The route heads south-east on an initial great-circle bearing of 114°, passing near 44.0° N, 112.9° W at its midpoint.
Bearing 114° south-east Midpoint 44.0° N, 112.9° W Model 805 km/h + 25 min
SOURCE·OurAirports + great-circle computation·REVIEWED JUL 2026
How this is worked out
- Take both airports' published coordinates from OurAirports — nothing here is scraped from another flight site.
- Great-circle distance by haversine on a mean earth radius of 6,371.0088 km: 1,645 km.
- Airborne time = that distance ÷ 805 km/h, a representative jet cruise speed: 2h 03m.
- Add a flat 25 minutes for pushback, taxi, climb, descent and taxi-in — the reason a 400 km hop is never half an hour: 2h 28m gate to gate.
- Winds, aircraft type and airline schedule padding are not modelled. The cruise-speed table shows how much that assumption is worth.
1,645 km / 805 km/h = 2h 03m airborne
+ 25 min ground = 2h 28m gate to gate
SOURCE·OurAirports + great-circle computation·REVIEWED JUL 2026
The same route, plotted on a world grid
The strip above gives the route its length and its shape. This gives it a position: latitude and longitude only, no coastlines, because a hand-drawn coastline would be decoration pretending to be data. On a flat grid the shortest path looks bent; on a globe it is straight.
Flight time at different cruise speeds
Aircraft type, winds and routing all move the real number. This is the same distance flown at different speeds, plus the 25-minute ground and climb allowance.
| Typical of | Cruise speed | Airborne | Gate to gate |
|---|---|---|---|
| Turboprop / regional | 550 km/h | 2h 59m | 3h 25m |
| Narrowbody jet (A320, 737) | 780 km/h | 2h 07m | 2h 32m |
| Widebody jet (777, 787, A350) | 900 km/h | 1h 50m | 2h 15m |
| Private jet (Gulfstream) | 850 km/h | 1h 56m | 2h 21m |
Headwinds on an eastbound long-haul routinely add 30–60 minutes; the same route westbound can be quicker. Airlines publish schedules with padding built in.
SOURCE·OurAirports + great-circle computation·REVIEWED JUL 2026
Both airports
| SEA | DEN | |
|---|---|---|
| Airport | Seattle–Tacoma International Airport | Denver International Airport |
| City | Seattle | Denver |
| Country | United States | United States |
| ICAO | KSEA | KDEN |
| Coordinates | 47.4479, -122.3103 | 39.86, -104.6738 |
| Elevation | 433 ft | 5,431 ft |
Every figure on this plate is geometry. The shape of the earth is knowable; the airline's schedule is not.
Questions this plate answers
How long is the flight from Seattle to Denver?
A non-stop flight from Seattle (SEA) to Denver (DEN) takes about 2h 28m. The great-circle distance is 1,645 km (1,022 miles, 888 nautical miles), flying south-east on an initial bearing of 114°.
How far is Seattle from Denver?
1,645 kilometres in a straight line over the earth's surface — 1,022 miles or 888 nautical miles. Actual flown distance is usually 2–5% longer because aircraft follow airways, avoid weather and route around restricted airspace.
Is there a non-stop flight between SEA and DEN?
This page calculates the direct-line time and distance; it does not track airline schedules. At 1,645 km the route is comfortably within range of a non-stop service if an airline chooses to fly it. Check an airline or booking site for what is actually scheduled.
Airport coordinates from OurAirports (public domain). Distance is a great-circle calculation; flight time uses the model described on the method page. Flight times are great-circle estimates for planning only — always check the airline's published schedule.
