IAH to LHR Route Guide
Houston, United States → London, United Kingdom
Quick answer
KIAH (Houston, United States) to EGLL (London, United Kingdom) is a 4,191 NM (7,762 km / 4,823 mi) great-circle route with an initial bearing of 41° (NE). Typical cruise altitude FL410, expected flight time 9h 14m, common aircraft: Boeing 777-300ER, Airbus A350-900, Boeing 787-9.
Distance
4,191 NM
7,762 km / 4,823 mi
Initial Bearing
41° (NE)
True heading at departure
Typical Cruise
FL410
41,000 ft
Block Time
9h 14m
Typical jet, no wind correction
Fuel Estimate
14,073 kg
Single-aisle equivalent + reserve
Departure Elevation
97 ft
KIAH
Arrival Elevation
83 ft
EGLL
What aircraft fly this route?
For a 4,191 NM mission, operators typically deploy:
- Boeing 777-300ER
- Airbus A350-900
- Boeing 787-9
- Airbus A330-900neo
Weather considerations
Pilots flying IAH-LHR should brief METARs and TAFs at both ends, plus any en-route SIGMETs. On this long-range mission, plan for an alternate within fuel reserves and review oceanic / NAT track procedures if applicable.
Frequently asked questions
What is the distance between IAH and LHR?
4,191 nautical miles (7,762 km / 4,823 statute miles) great-circle.
How long is the flight from Houston to London?
Approximately 9h 14m block-to-block for a typical commercial jet, depending on aircraft type and winds.
What aircraft typically fly IAH-LHR?
Common types include Boeing 777-300ER, Airbus A350-900, Boeing 787-9, Airbus A330-900neo depending on operator and demand.
What altitude do flights cruise at?
Most flights at this distance cruise around FL410 (41,000 ft), though winds and traffic affect filed altitude.
What initial heading is the route?
41° true (NE). Track varies along the route due to great-circle curvature.
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