JetSetAuthority

Route · North Atlantic

DEN Denver ⇄ LHR London

Denver International Airport (United States) and London Heathrow Airport (United Kingdom): great-circle distance, estimated scheduled flight time each way, time difference and jet lag.

Distance7,497 km4,658 mi4,048 nautical miles
DEN → LHR9 h 05 minestimated block time
LHR → DEN10 h 10 minestimated block time
Clock change+6 hLondon vs Denver, today
Great-circle route from Denver (DEN) to London (LHR)DENDenverLHRLondon
The shortest path over the Earth’s surface (great circle), drawn on a Natural Earth projection. Real flight paths bend around weather, winds and closed airspace.

Flight time each way

DEN → LHR

9 h 05 min

Estimated gate-to-gate scheduled time. Initial heading 41° (NE).

Leave Denver Sat 7 Nov, 10:00 local → arrive London Sun 8 Nov, 02:05 local +1 day.

LHR → DEN

10 h 10 min

Estimated gate-to-gate scheduled time. Initial heading 306° (NW).

Leave London Sat 7 Nov, 10:00 local → arrive Denver Sat 7 Nov, 13:10 local.

DEN-bound flights are the slower direction by about 65 minutes in our estimate: the route runs mostly east–west through latitudes where the prevailing westerly winds at cruise height are strong, so heading east rides a tailwind and heading west fights a headwind. How we estimate it.

Distance

Great-circle distance7,497 km · 4,658 mi · 4,048 nmi
Initial heading41° (NE) from DEN; 306° (NW) from LHR
Farthest from the equator59.9°N — the path arcs north of both airports
Crossesneither the equator nor the 180th meridian
Share of the longest possible trip37% of the 20,015 km to the far side of the Earth

Time zones and jet lag

DENAmerica/Denver — UTC−6 now; UTC−7 standard time, UTC−6 during daylight saving time
LHREurope/London — UTC+0 now; UTC+0 standard time, UTC+1 during daylight saving time
DifferenceLondon is 6 hours ahead of Denver today.

Jet lag, flying DEN → LHR. Your body clock has to move 6 hours earlier, like an eastward trip. A common rule of thumb is that the body clock adjusts by roughly one time zone a day, so expect up to about 6 days to fully adjust. Shifting earlier (as here) is usually the harder direction; morning daylight at the destination helps. Flying the other way, the shift is reversed.

General information, not medical advice.

The two airports

DEN Denver International AirportDenver, United States · longest runway 16,000 ft4,877 m LHR London Heathrow AirportLondon, United Kingdom · longest runway 12,799 ft3,901 m

More routes from DEN and LHR

DENPHX Denver – Phoenix 968 km601 mi · 2 h 15 min DFWDEN Dallas–Fort Worth – Denver 1,032 km641 mi · 2 h 20 min DENORD Denver – Chicago 1,426 km886 mi · 2 h 30 min SEADEN Seattle – Denver 1,645 km1,022 mi · 2 h 45 min EWRDEN Newark – Denver 2,576 km1,601 mi · 4 h 20 min DENFRA Denver – Frankfurt 8,089 km5,026 mi · 9 h 45 min LHRMAN London – Manchester 243 km151 mi · 1 h 20 min LHROSL London – Oslo 1,206 km749 mi · 2 h 20 min LHRTLV London – Tel Aviv 3,589 km2,230 mi · 4 h 50 min LHRANU London – St. John's 6,553 km4,072 mi · 9 h 05 min LHRSEZ London – Mahé 8,176 km5,080 mi · 10 h LHRSYD London – Sydney 17,021 km10,576 mi · 19 h 30 min

Routes of a similar length

ISTJNB Istanbul – Johannesburg 7,496 km4,658 mi · 9 h 35 min YVRNRT Vancouver – Tokyo 7,503 km4,662 mi · 10 h 20 min ATLGRU Atlanta – São Paulo 7,510 km4,667 mi · 9 h 25 min ISTBKK Istanbul – Bangkok 7,514 km4,669 mi · 9 h

Need a different pair? The flight-time calculator works for any two of 3,245 airports. Not covered: which airlines fly this route, schedules, fares and live status — that data is proprietary and we don’t guess it.

Photos on airport pages are credited there. Estimates are rounded to 5 minutes; typical error about 13 minutes (validation).