MIA → LHR
8 h 30 min
Estimated gate-to-gate scheduled time. Initial heading 43° (NE).
Leave Miami Sat 7 Nov, 10:00 local → arrive London Sat 7 Nov, 23:30 local.
Route · North Atlantic
Miami International Airport (United States) and London Heathrow Airport (United Kingdom): great-circle distance, estimated scheduled flight time each way, time difference and jet lag.
8 h 30 min
Estimated gate-to-gate scheduled time. Initial heading 43° (NE).
Leave Miami Sat 7 Nov, 10:00 local → arrive London Sat 7 Nov, 23:30 local.
9 h 50 min
Estimated gate-to-gate scheduled time. Initial heading 279° (W).
Leave London Sat 7 Nov, 10:00 local → arrive Miami Sat 7 Nov, 14:50 local.
MIA-bound flights are the slower direction by about 80 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.
| Great-circle distance | 7,109 km · 4,417 mi · 3,838 nmi |
|---|---|
| Initial heading | 43° (NE) from MIA; 279° (W) from LHR |
| Farthest from the equator | 52.1°N |
| Crosses | neither the equator nor the 180th meridian |
| Share of the longest possible trip | 36% of the 20,015 km to the far side of the Earth |
| MIA | America/New_York — UTC−4 now; UTC−5 standard time, UTC−4 during daylight saving time |
|---|---|
| LHR | Europe/London — UTC+0 now; UTC+0 standard time, UTC+1 during daylight saving time |
| Difference | London is 4 hours ahead of Miami today. |
Jet lag, flying MIA → LHR. Your body clock has to move 4 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 4 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.
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).