Distance from Istanbul to Tehran
Istanbul (Türkiye) and Tehran (Iran) are 2,040 km apart — that's 1,268 miles or 1,102 nautical miles, measured along the great circle (the shortest path over the Earth's surface).
The numbers
- Great-circle distance
- 2,040 km · 1,268 mi · 1,102 nmi
- Initial bearing Istanbul → Tehran
- 100° (E)
- Initial bearing Tehran → Istanbul
- 294° (WNW)
- Nonstop flight (rough estimate)
- ≈ 3 h 04 min
- Time zones
- Istanbul UTC+03:00 · Tehran UTC+03:30 (+0.5 h)
- Sunrise gap today
- 100 min — the sun rises later in Istanbul
Flight time is a cruise-speed approximation (no routing/wind); driving distance depends on roads and is typically 20–40% longer than great-circle.
The two cities
- Istanbul
- 41.0138, 28.9497
- Sunrise / sunset today
- 04:44 UTC / 14:54 UTC
- Tehran
- 35.6944, 51.4215
- Sunrise / sunset today
- 03:04 UTC / 13:34 UTC
Open in the distance calculator Find the halfway point
Distances here are straight-line (great-circle). Road routes typically run 1.2–1.4× longer — here's why, with the visual.