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LHR to IAH: distance & flight time
London (London Heathrow Airport) → Houston (George Bush Intercontinental Houston Airport)
4,824 mi
7,763 km · 4,192 nm
9h 55m
estimated nonstop flight time
-6h
time difference · heading northwest
See live LHR→IAH fares Phone-only fares on this route — call free
Flight time details
4,824 miles nonstop takes roughly 9h 55m gate to gate, flying northwest. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 6-hour time set-back when reading arrival times on your ticket.
The two airports
- LHR — London Heathrow Airport · London, United Kingdom
- IAH — George Bush Intercontinental Houston Airport · Houston, United States
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 IAH
- DWH · David Wayne Hooks Memorial Airport14 mi away
- IWS · West Houston Airport23 mi away
- AAP · Andrau Airpark23 mi away
- HOU · William P Hobby Airport24 mi away
Frequently asked questions
How far is LHR from IAH?
The flight distance from London (LHR) to Houston (IAH) is 4,824 miles (7,763 km, 4,192 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from LHR to IAH?
A nonstop flight takes about 9h 55m 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 Houston?
Houston is 6 hours behind London.
What is the cheapest way to fly from LHR to IAH?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on LHR–IAH that never appear on search engines, with no booking fees.