Houston (IAH) to London (LHR)

4,824mi
7,763 km4,192 nm

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.

Route map: IAH → LHRIAHLHR

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What actually flies IAH–LHR

Filed traffic data

In July 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 49% of departures; flights ran 85% full.

Departures

244

July 2026

Seats

64,068

both directions

Passengers

54,212

both directions

Load factor

84.6%

RPM ÷ ASM

Who flies IAH–LHR?

United Airlines operated the most nonstop IAH–LHR departures in July 2026 (124), one of 2 carriers on the route.

  • UA

    United Airlines

    124 departures · 34,520 seats

    87.0%

    Load

  • BA

    British Airways

    120 departures · 29,548 seats

    81.8%

    Load

What plane flies IAH–LHR?

In July 2026, the Boeing 777-200 flew 49% of IAH–LHR departures — more than any other aircraft type.

How has IAH–LHR traffic changed?

Nonstop IAH–LHR departures rose from 222 in August 2025 to 244 in July 2026.

Monthly nonstop IAH–LHR traffic, trailing 12 months through July 2026. Bars scale to the busiest month; months with no filed service show as zero.

  • 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

  • June 2026

    239 departures · 53,818 passengers

    84.7%

    Load

  • July 2026

    244 departures · 54,212 passengers

    84.6%

    Load

By direction

Each direction is filed separately — they rarely match.

IAH → LHR

78.9% full

122 departures · 25,279 passengers

LHR → IAH

90.3% full

122 departures · 28,933 passengers

Nonstop IAH–LHR traffic has been filed since 2025.

Source: US DOT BTS Form 41 T-100 Segment (All Carriers). Data through July 2026; filings from 2025. Public domain (US Government work).

The airports

IAH

Houston

US

George Bush Intercontinental Airport

Coordinates

29.98°N, 95.34°W

Hemisphere

N · W

LHR

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 July 2026, the Boeing 777-200 flew the largest share of departures (49.2%), followed by the Boeing 777-300ER (27.1%).

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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