Houston (IAH) to Istanbul (IST)
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.
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What actually flies IAH–IST
Filed traffic dataIn May 2026, Turkish Airlines was the only carrier flying nonstop IAH–IST; the Boeing 787-9 was the most common aircraft at 75% of departures; flights ran 83% full.
Departures
80
May 2026
Seats
24,980
both directions
Passengers
20,770
both directions
Load factor
83.2%
RPM ÷ ASM
Who flies IAH–IST?
Turkish Airlines was the only carrier to fly nonstop IAH–IST in May 2026 (80 departures).
- TK
Turkish Airlines
80 departures · 24,980 seats
Share of departures100.0%83.2%
Load
What plane flies IAH–IST?
In May 2026, the Boeing 787-9 flew 75% of IAH–IST departures — more than any other aircraft type.
- Boeing 787-9
60 departures · 82.3% load
75.0% - Boeing 777-300ER
20 departures · 85.3% load
25.0%
How has IAH–IST traffic changed?
Nonstop IAH–IST departures fell from 86 in June 2025 to 80 in May 2026.
Monthly nonstop IAH–IST traffic, trailing 12 months through May 2026. Bars scale to the busiest month; months with no filed service show as zero.
June 2025
86 departures · 23,758 passengers
87.4%
Load
July 2025
88 departures · 25,099 passengers
90.5%
Load
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
By direction
Each direction is filed separately — they rarely match.
IAH → IST
94.0% full
40 departures · 11,744 passengers
IST → IAH
72.3% full
40 departures · 9,026 passengers
Nonstop IAH–IST 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
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 May 2026, the Boeing 787-9 flew the largest share of departures (75.0%), followed by the Boeing 777-300ER (25.0%).
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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