IAH to LHR: Distance and Flight Time
The distance from George Bush Intercontinental Airport (IAH) to London Heathrow Airport (LHR) is 7,763 km (4,824 mi). A typical nonstop flight covers it in about 10h 10m, heading northeast. The distance is the same in either direction (LHR to IAH).
How far is it from Houston to London?
The great-circle distance between George Bush Intercontinental Airport (IAH) and London Heathrow Airport (LHR) is 7,763 km (4,824 mi, 4,192 nautical miles). That is the straight-line distance; a real flight is a little longer because of air-traffic routing.
How long is the flight from IAH to LHR?
A nonstop flight typically takes about 10h 10m. This is an estimate from the distance; actual block times depend on the aircraft, winds and the exact routing. LHR is roughly northeast of IAH.
How is the IAH to LHR route written in code?
The pair is written IAH-LHR in IATA codes and KIAH-EGLL in ICAO codes, the form used on a flight plan. George Bush Intercontinental Airport is IAH (KIAH), London Heathrow Airport is LHR (EGLL).
| IAH | LHR | |
|---|---|---|
| Airport | George Bush Intercontinental Airport | London Heathrow Airport |
| ICAO code | KIAH | EGLL |
| Country | United States | United Kingdom |
| Elevation | 97 ft | 83 ft |
| Rank by connections | #49 | #4 |
KIAH starts with K, the ICAO prefix for the contiguous United States; EGLL starts with E, the prefix for northern Europe. How ICAO prefixes are laid out.
The two fields sit at almost the same height, within 14 ft (4 m) of each other.
Airlines flying IAH to LHR
3 airlines appear on this route in the open route dataset, 3 of them still listed as active. Each row gives the IATA code, the ICAO code and the radio callsign, which is what an air traffic controller hears:
| IATA | Airline | ICAO | Callsign | Status |
|---|---|---|---|---|
| AY | Finnair | FIN | Finnair | Active |
| BA | British Airways | BAW | Speedbird | Active |
| UA | United Airlines | UAL | United | Active |
A further 3 carriers sell this pair as a codeshare without operating it: AA, IB, LH.
Route and carrier data comes from the OpenFlights open dataset, regenerated here on . It is a historical snapshot of scheduled connections, not a live schedule, and it includes codeshare listings, so some carriers shown may no longer operate the route or exist. How we build this · Data and sources.
Frequently asked questions
How far is Houston from London?
George Bush Intercontinental Airport (IAH) and London Heathrow Airport (LHR) are 7,763 km (4,824 mi, 4,192 nautical miles) apart in a straight line.
How long is the flight from IAH to LHR?
A typical nonstop flight between IAH and LHR takes about 10h 10m. Actual times vary with aircraft type, winds and routing.
What direction is LHR from IAH?
London Heathrow Airport (LHR) lies roughly northeast of George Bush Intercontinental Airport (IAH).
Which airlines fly IAH to LHR?
3 airlines appear on the IAH-LHR route in the open dataset, including Finnair, British Airways, United Airlines.
Related routes
Other routes from Houston (IAH):
Other routes from London (LHR):
IAH airport code · LHR airport code · Busiest airports worldwide