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.
Look up a route, or build a trip
Change the airports, or add stops for a multi-leg trip.
What actually flies IAH–LHR
US DOT T-100 · filed dataIn April 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 53% of departures; flights ran 66% full.
Departures
223
April 2026
Seats
58,798
both directions
Passengers
39,079
both directions
Load factor
66.5%
passengers ÷ seats
Who flies IAH–LHR?
United Airlines operated the most nonstop IAH–LHR departures in April 2026 (118), one of 2 carriers on the route.
- UA
United Airlines
118 departures · 32,568 seats
Share of departures52.9%63.0%
Load
- BA
British Airways
105 departures · 26,230 seats
Share of departures47.1%70.8%
Load
What plane flies IAH–LHR?
In April 2026, the Boeing 777-200 flew 53% of IAH–LHR departures — more than any other aircraft type.
- Boeing 777-200
118 departures · 63.0% load
52.9% - Boeing 787-10
46 departures · 64.7% load
20.6% - Boeing 777-300ER
45 departures · 75.0% load
20.2% - Boeing 787-9
14 departures · 78.4% load
6.3%
How has IAH–LHR traffic changed?
Nonstop IAH–LHR departures fell from 242 in May 2025 to 223 in April 2026.
Monthly nonstop IAH–LHR traffic, trailing 12 months through April 2026. Bars scale to the busiest month; months with no filed service show as zero.
May 2025
242 departures · 49,386 passengers
76.9%
Load
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
By direction
The DOT files each direction separately — they rarely match.
LHR → IAH
55.7% full
112 departures · 16,450 passengers
IAH → LHR
77.3% full
111 departures · 22,629 passengers
Nonstop IAH–LHR traffic has been filed with the US DOT since 2025.
Source: US DOT BTS Form 41 T-100 Segment (All Carriers). Data through April 2026; filings from 2025. Public domain (US Government work). The DOT publishes roughly three months in arrears.
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 April 2026, the Boeing 777-200 flew the largest share of departures (52.9%), followed by the Boeing 787-10 (20.6%).
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.
Keep exploring
Every route below is its own page.
Other routes from IAH
Popular long-haul routes