Need help booking?
Unpublished phone-only deals available
LHR to RML: distance & flight time
London (London Heathrow Airport) → Colombo (Colombo Ratmalana Airport)
5,435 mi
8,747 km · 4,723 nm
11h 7m
estimated nonstop flight time
+4.5h
time difference · heading east
See live LHR→RML fares Phone-only fares on this route — call free
Flight time details
5,435 miles nonstop takes roughly 11h 7m gate to gate, flying east. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 4.5-hour time gain when reading arrival times on your ticket.
The two airports
- LHR — London Heathrow Airport · London, United Kingdom
- RML — Colombo Ratmalana Airport · Colombo, Sri Lanka
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 RML
- CMB · Bandaranaike International Colombo Airport25 mi away
- KCT · Koggala Airport65 mi away
- HRI · Mattala Rajapaksa International Airport93 mi away
- GIU · Sigiriya Air Force Base97 mi away
Frequently asked questions
How far is LHR from RML?
The flight distance from London (LHR) to Colombo (RML) is 5,435 miles (8,747 km, 4,723 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from LHR to RML?
A nonstop flight takes about 11h 7m gate to gate. Actual time varies with winds, routing and season — eastbound transatlantic flights, for example, are usually faster than the return.
What is the time difference between London and Colombo?
Colombo is 4.5 hours ahead of London.
What is the cheapest way to fly from LHR to RML?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on LHR–RML that never appear on search engines, with no booking fees.