Houston (IAH) to Istanbul (IST)

6,357mi
10,231 km5,524 nm

Flight time

≈ 13h 31m

Bearing

39° NE

Houston (IAH) to Istanbul (IST) is 6,357 miles (10,231 km) as the crow flies — the great-circle baseline most distance-based mileage programs credit.

Route map: IAH → ISTIAHIST

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What actually flies IAH–IST

Filed traffic data

In July 2026, Turkish Airlines was the only carrier flying nonstop IAH–IST; the Boeing 787-9 was the most common aircraft at 57% of departures; flights ran 91% full.

Departures

80

July 2026

Seats

25,666

both directions

Passengers

23,313

both directions

Load factor

90.8%

RPM ÷ ASM

Who flies IAH–IST?

Turkish Airlines was the only carrier to fly nonstop IAH–IST in July 2026 (80 departures).

  • TK

    Turkish Airlines

    80 departures · 25,666 seats

    90.8%

    Load

What plane flies IAH–IST?

In July 2026, the Boeing 787-9 flew 57% of IAH–IST departures — more than any other aircraft type.

How has IAH–IST traffic changed?

Nonstop IAH–IST departures fell from 89 in August 2025 to 80 in July 2026.

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

  • August 2025

    89 departures · 22,923 passengers

    81.7%

    Load

  • September 2025

    87 departures · 22,803 passengers

    83.3%

    Load

  • October 2025

    89 departures · 22,833 passengers

    81.6%

    Load

  • November 2025

    88 departures · 24,050 passengers

    85.5%

    Load

  • December 2025

    88 departures · 24,964 passengers

    88.6%

    Load

  • January 2026

    88 departures · 24,223 passengers

    86.0%

    Load

  • February 2026

    57 departures · 15,096 passengers

    80.9%

    Load

  • March 2026

    0 departures · 0 passengers

    —

    Load

  • April 2026

    82 departures · 20,831 passengers

    80.8%

    Load

  • May 2026

    80 departures · 20,770 passengers

    83.2%

    Load

  • June 2026

    78 departures · 21,888 passengers

    88.7%

    Load

  • July 2026

    80 departures · 23,313 passengers

    90.8%

    Load

By direction

Each direction is filed separately — they rarely match.

IAH → IST

89.5% full

40 departures · 11,492 passengers

IST → IAH

92.1% full

40 departures · 11,821 passengers

Nonstop IAH–IST 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

IST

Istanbul

TR

İstanbul Airport

Coordinates

41.27°N, 28.73°E

Hemisphere

N · E

Frequently asked

How far is Houston (IAH) from Istanbul (IST)?

IAH to IST is 6,357 miles (10,231 km / 5,524 nautical miles) measured great-circle — the shortest path over the surface of the Earth.

How long is the flight from IAH to IST?

A nonstop covers the 6,357-mile great-circle distance in roughly 13h 31m of block time, before winds. Actual schedules vary a few percent by direction and aircraft.

What plane flies IAH–IST?

In July 2026, the Boeing 787-9 flew the largest share of departures (57.5%), followed by the Boeing 777-300ER (42.5%).

What mileage do I earn flying IAH–IST?

Distance-based programs credit off the 6,357-mile great-circle figure, then apply your fare-class earning rate. Revenue-based programs credit off the fare instead.

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