Distance from Tehran to Istanbul
🇮🇷 Tehran, Iran → 🇹🇷 Istanbul, Turkey
The distance between Tehran and Istanbul is 2,035 kilometres (1,265 miles) measured as a great-circle (straight) line. Flying out of Imam Khomeini International Airport (IKA), the initial heading is roughly northwest (294°), and a typical nonstop flight takes around 3h 3m. Actual flight paths and times vary with routing, winds and air-traffic constraints.
Tehran
Iran
Iran's sprawling capital sits below the snow-capped Alborz Mountains, mixing grand Qajar palaces, lively bazaars and modern museums.
Top sights: Golestan Palace, Grand Bazaar, Milad Tower, National Museum of Iran, Azadi Tower
Istanbul
Turkey
The only major city spanning two continents, Istanbul bridges Europe and Asia across the Bosphorus with layers of Byzantine and Ottoman history.
Top sights: Hagia Sophia, Blue Mosque, Topkapi Palace, Grand Bazaar, Bosphorus cruise, Galata Tower
Frequently asked questions
- How far is Istanbul from Tehran?
- 2,035 km (1,265 miles) in a straight line.
- How long is the flight from Tehran to Istanbul?
- About 3h 3m nonstop, at an average 800 km/h cruising speed plus taxi and climb time.
- What direction is Istanbul from Tehran?
- Istanbul lies roughly to the northwest of Tehran (initial bearing 294°).
- Which airports serve this route?
- Tehran: Imam Khomeini International Airport (IKA). Istanbul: Istanbul Airport (IST).
More distances from Tehran
See the country profiles for Iran and Turkey, or open the Asia distance calculator.