London to Denver
9h 44m The flight from London Heathrow Airport (LHR) to Denver International Airport (DEN) covers 7,497 km (4,658 miles) and takes approximately 9h 44m gate to gate for a typical jet.
The route heads north-west on an initial great-circle bearing of 306°, passing near 58.8° N, 60.2° W at its midpoint.
The route
The great-circle path — the shortest line between the two airports across the curve of the earth. On a flat map it 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 | 13h 38m | 14h 03m |
| Narrowbody jet (A320, 737) | 780 km/h | 9h 37m | 10h 02m |
| Widebody jet (777, 787, A350) | 900 km/h | 8h 20m | 8h 45m |
| Private jet (Gulfstream) | 850 km/h | 8h 49m | 9h 14m |
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.
Both airports
| LHR | DEN | |
|---|---|---|
| Airport | London Heathrow Airport | Denver International Airport |
| City | London | Denver |
| Country | United Kingdom | United States |
| ICAO | EGLL | KDEN |
| Coordinates | 51.4707, -0.4599 | 39.86, -104.6738 |
| Elevation | 83 ft | 5,431 ft |
Questions
How long is the flight from London to Denver?
A non-stop flight from London (LHR) to Denver (DEN) takes about 9h 44m. The great-circle distance is 7,497 km (4,658 miles, 4,048 nautical miles), flying north-west on an initial bearing of 306°.
How far is London from Denver?
7,497 kilometres in a straight line over the earth's surface — 4,658 miles or 4,048 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 LHR and DEN?
This page calculates the direct-line time and distance; it does not track airline schedules. At 7,497 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.
What should I expect on a 9h 44m flight?
Anything past six hours is a long-haul flight: expect at least one meal service, a significant time-zone shift, and enough sitting that circulation and hydration start to matter. Cabin altitude, dry air and disrupted sleep do more damage to a training routine than the flight itself.
Other routes from London
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.