Houston (IAH) to London (LHR)
Flight time
≈ 10h 27m
Bearing
41° NE
Houston (IAH) to London (LHR) is 4,824 miles (7,763 km) as the crow flies — the great-circle baseline most distance-based mileage programs credit.
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What actually flies IAH–LHR
Filed traffic dataIn May 2026, United Airlines operated the most departures, one of 2 carriers flying nonstop IAH–LHR; the Boeing 777-200 was the most common aircraft at 51% of departures; flights ran 73% full.
Departures
245
May 2026
Seats
65,083
both directions
Passengers
47,505
both directions
Load factor
73.0%
RPM ÷ ASM
Who flies IAH–LHR?
United Airlines operated the most nonstop IAH–LHR departures in May 2026 (124), one of 2 carriers on the route.
- UA
124 departures · 34,224 seats
Share of departures50.6%66.3%
Load
- BA
British Airways
121 departures · 30,859 seats
Share of departures49.4%80.4%
Load
What plane flies IAH–LHR?
In May 2026, the Boeing 777-200 flew 51% of IAH–LHR departures — more than any other aircraft type.
- Boeing 777-200
126 departures · 66.7% load
51.4% - Boeing 777-300ER
60 departures · 86.3% load
24.5% - Boeing 787-10
52 departures · 72.9% load
21.2% - Boeing 787-9
6 departures · 82.8% load
2.5% - Airbus A380-800
1 departures · 86.8% load
0.4%
How has IAH–LHR traffic changed?
Nonstop IAH–LHR departures rose from 229 in June 2025 to 245 in May 2026.
Monthly nonstop IAH–LHR traffic, trailing 12 months through May 2026. Bars scale to the busiest month; months with no filed service show as zero.
June 2025
229 departures · 50,276 passengers
85.4%
Load
July 2025
244 departures · 55,664 passengers
87.2%
Load
August 2025
222 departures · 44,826 passengers
76.6%
Load
September 2025
230 departures · 41,325 passengers
68.6%
Load
October 2025
237 departures · 44,422 passengers
72.3%
Load
November 2025
213 departures · 34,960 passengers
65.6%
Load
December 2025
218 departures · 44,586 passengers
80.5%
Load
January 2026
210 departures · 35,884 passengers
68.2%
Load
February 2026
190 departures · 26,659 passengers
56.3%
Load
March 2026
216 departures · 43,306 passengers
79.8%
Load
April 2026
223 departures · 39,079 passengers
66.5%
Load
May 2026
245 departures · 47,505 passengers
73.0%
Load
By direction
Each direction is filed separately — they rarely match.
LHR → IAH
58.3% full
123 departures · 19,115 passengers
IAH → LHR
87.9% full
122 departures · 28,390 passengers
Nonstop IAH–LHR traffic has been filed since 2025.
Source: US DOT BTS Form 41 T-100 Segment (All Carriers). Data through May 2026; filings from 2025. Public domain (US Government work).
The airports
London
GB
London Heathrow Airport
Coordinates
51.47°N, 0.46°W
Hemisphere
N · W
Frequently asked
How far is Houston (IAH) from London (LHR)?
IAH to LHR is 4,824 miles (7,763 km / 4,192 nautical miles) measured great-circle — the shortest path over the surface of the Earth.
How long is the flight from IAH to LHR?
A nonstop covers the 4,824-mile great-circle distance in roughly 10h 27m of block time, before winds. Actual schedules vary a few percent by direction and aircraft.
What plane flies IAH–LHR?
In May 2026, the Boeing 777-200 flew the largest share of departures (51.4%), followed by the Boeing 777-300ER (24.5%).
What mileage do I earn flying IAH–LHR?
Distance-based programs credit off the 4,824-mile great-circle figure, then apply your fare-class earning rate. Revenue-based programs credit off the fare instead.
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