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LHR to DMK: distance & flight time
London (London Heathrow Airport) → Bangkok (Don Mueang International Airport)
5,933 mi
9,548 km · 5,156 nm
12h 6m
estimated nonstop flight time
+6h
time difference · heading east
See live LHR→DMK fares Phone-only fares on this route — call free
Flight time details
5,933 miles nonstop takes roughly 12h 6m gate to gate, flying east. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 6-hour time gain when reading arrival times on your ticket.
The two airports
- LHR — London Heathrow Airport · London, United Kingdom
- DMK — Don Mueang International Airport · Bangkok, Thailand
Distances are great-circle ("as the crow flies") — the same basis airlines use for frequent-flyer miles.
Alternate airports can cut this fare
Flying from or into a nearby airport is the #1 trick our agents use to beat online prices. Call and we'll compare every combination on one call.
Near LHR
- LGW · London Gatwick Airport25 mi away
- NHT · RAF Northolt6 mi away
- HYC · Wycombe Air Park18 mi away
- FAB · Farnborough Airport19 mi away
Near DMK
- BKK · Suvarnabhumi Airport19 mi away
- KDT · Kamphaeng Saen Airport48 mi away
- UTP · U-Tapao International Airport89 mi away
- TKH · Takhli Airport97 mi away
Frequently asked questions
How far is LHR from DMK?
The flight distance from London (LHR) to Bangkok (DMK) is 5,933 miles (9,548 km, 5,156 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from LHR to DMK?
A nonstop flight takes about 12h 6m gate to gate. Actual time varies with winds, routing and season — eastbound transatlantic flights, for example, are usually faster than the return.
Are there nonstop flights from LHR to DMK?
Nonstop service on LHR–DMK depends on the season and the day of week. Run the fare search on this page with the nonstop filter applied to see current direct options; when there is no nonstop, a single connection through a carrier hub adds roughly 2–4 hours to the 12h 6m nonstop estimate.
What is the time difference between London and Bangkok?
Bangkok is 6 hours ahead of London.
What is the cheapest way to fly from LHR to DMK?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on LHR–DMK that never appear on search engines, with no booking fees.
Why are some LHR to DMK fares phone-only?
Consolidator contracts let us sell certain LHR–DMK tickets below the price airlines permit us to publish online, so those fares can only be quoted over the phone. Call the travel desk and an agent will check phone-only inventory for your dates.