Flights London → Houston
LHR → IAH
How long is the flight from London to Houston?
The flight from London (LHR) to Houston (IAH) takes about 10h 7m. This is an estimate based on the distance between the two airports: the real time depends on the aircraft, wind and any stops.
Route overview
The flight route from London to Houston is operated using a variety of aircraft including the Boeing 747-400, Boeing 777, Boeing 767-300, and Boeing 787-8. The destination airport in Houston sees over 40 million passengers annually, reflecting its significant role as an international travel hub.
The London (LHR) → Houston (IAH) route is operated by American Airlines, British Airways, Iberia Airlines, Lufthansa Cargo, United Airlines. FlightGuard's average computed risk is 10.1/100 (low), updated in real time from weather, ATC delays, strikes, NOTAMs, fuel and flight history. At Houston the average ATFM delay is 5.5 minutes (main cause: atfm). Departing from London the average ATFM delay is 1.8 minutes.
Heading to Houston: what to expect in this direction
Flying from London (LHR) to Houston (IAH) heads north-west for about 7,763 km, a flight time of roughly 10h 7m.
Air-traffic congestion: departing London the average ATFM delay is 1.8 min (atfm); arriving into Houston it is 5.5 min (atfm).
Route facts
Flexible on this trip? Compare flights
Airline punctuality on this route
| Airline | On-time | Average delay | Cancellations |
|---|---|---|---|
| Iberia Airlines (IB) | 87% | 20 min | 1.2% |
| United Airlines (UA) | 83% | 5 min | 1.3% |
| American Airlines (AA) | 79% | 6 min | 1.1% |
| Lufthansa Cargo (LH) | 74% | 21 min | 0.0% |
| British Airways (BA) | 66% | 31 min | 1.3% |
Airlines operating LHR-IAH
Airports
Frequently asked questions about LHR-IAH
The flight from London (LHR) to Houston (IAH) takes about 10h 7m. This is an estimate based on the distance between the two airports: the real time depends on the aircraft, wind and any stops.
Route-specific punctuality data isn't available yet. Check your flight on FlightGuard for a real-time analysis.
The cancellation rate varies by airline and season. Check your flight risk for an up-to-date estimate.
The route is operated by 5 airlines: American Airlines, British Airways, Iberia Airlines, Lufthansa Cargo, United Airlines.
Enter your flight number on FlightGuard for a real-time analysis based on 9 factors: weather at Houston, ATC delays, strikes, NOTAMs, fuel, airline punctuality and recent trends.
The London-Houston route is about 7,763 km: for a cancellation (with less than 14 days' notice), a delay over 3 hours, or denied boarding, UK261 compensation is £520, barring extraordinary circumstances.
