JetSetAuthority

Route · Europe to Asia and Africa

LHR London ⇄ BKK Bangkok

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

Distance9,578 km5,951 mi5,172 nautical miles
LHR → BKK11 h 15 minestimated block time
BKK → LHR12 h 45 minestimated block time
Clock change+7 hBangkok vs London, today
Great-circle route from London (LHR) to Bangkok (BKK)LHRLondonBKKBangkok
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

LHR → BKK

11 h 15 min

Estimated gate-to-gate scheduled time. Initial heading 73° (ENE).

Leave London Sat 7 Nov, 10:00 local → arrive Bangkok Sun 8 Nov, 04:15 local +1 day.

BKK → LHR

12 h 45 min

Estimated gate-to-gate scheduled time. Initial heading 322° (NW).

Leave Bangkok Sat 7 Nov, 10:00 local → arrive London Sat 7 Nov, 15:45 local.

LHR-bound flights are the slower direction by about 95 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 distance9,578 km · 5,951 mi · 5,172 nmi
Initial heading73° (ENE) from LHR; 322° (NW) from BKK
Farthest from the equator53.5°N
Crossesneither the equator nor the 180th meridian
Share of the longest possible trip48% of the 20,015 km to the far side of the Earth

Time zones and jet lag

LHREurope/London — UTC+0 now; UTC+0 standard time, UTC+1 during daylight saving time
BKKAsia/Bangkok — UTC+7 now; UTC+7 all year (no daylight saving time)
DifferenceBangkok is 7 hours ahead of London today; +7 h in January and +6 h in July because daylight saving time starts and ends on different dates (or not at all).

Jet lag, flying LHR → BKK. Your body clock has to move 7 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 7 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

LHR London Heathrow AirportLondon, United Kingdom · longest runway 12,799 ft3,901 m BKK Suvarnabhumi AirportBangkok, Thailand · longest runway 13,123 ft4,000 m

More routes from LHR and BKK

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 LHRPEK London – Beijing 8,154 km5,067 mi · 9 h 50 min LHRSYD London – Sydney 17,021 km10,576 mi · 19 h 30 min BKKCNX Bangkok – Chiang Mai 597 km371 mi · 1 h 45 min BKKHAN Bangkok – Hanoi 995 km618 mi · 2 h 10 min SINBKK Singapore – Bangkok 1,417 km880 mi · 2 h 40 min DXBBKK Dubai – Bangkok 4,903 km3,047 mi · 6 h 20 min ISTBKK Istanbul – Bangkok 7,514 km4,669 mi · 9 h CDGBKK Paris – Bangkok 9,448 km5,871 mi · 11 h

Routes of a similar length

CDGHKG Paris – Hong Kong 9,590 km5,959 mi · 11 h 10 min LAXMUC Los Angeles – Munich 9,616 km5,975 mi · 11 h 25 min LAXICN Los Angeles – Seoul 9,625 km5,981 mi · 13 h LIMMAD Lima – Madrid 9,526 km5,919 mi · 11 h 25 min

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).