Istanbul (IST) to Tehran (THR) flights
No airline flies nonstop from Istanbul (IST) to Tehran (THR). The two airports are 1,276 miles (2,054 km) apart. There are 3 ways to fly it with one stop, through Tabriz, Shiraz and Mashad.
How to fly IST to THR: one stop
3 connections, most direct first. 2-stop routings and flight times are in Routes with Pro.
- Via Tabriz (TBZ)Iran Airtour the whole way
B9ISB9W5 - Via Shiraz (SYZ)Iran Airtour the whole wayB9B9IRQB+1
- Via Mashad (MHD)Iran Airtour the whole wayB9IRB9W5IS
IST to THR: common questions
Is there a nonstop flight from IST to THR?
No. The most direct way is one stop, for example through Tabriz (TBZ) on Turkish Airlines, Iran Airtour and 1 more and then Iran Airtour and Mahan Air. This page lists all 3 1-stop options.
How far is Istanbul from Tehran by plane?
Istanbul (IST) and Tehran (THR) are 1,276 miles (2,054 km) apart along the great circle, the shortest path a flight can take. Connections add distance on top.
How many miles does IST to THR cost?
It depends on the program: each prices the route from its own chart or dynamically. The Award Flight Pricer compares 30+ programs for IST to THR with taxes and fees.
Where can I connect between Istanbul and Tehran?
The most direct connections are through Tabriz (TBZ), Shiraz (SYZ) and Mashad (MHD). On 3 of them the same airline flies both flights, for example Iran Airtour through Tabriz.
More routes
Routes are scheduled nonstop flights. The route data is refreshed monthly; this list was last checked November 11, 2026. Seasonal routes and new launches can be missing or end early, so confirm with the airline before you book. Distances are great-circle, the shortest path between the two airports.