AirHint found the following cheapest one-way flights from Tehran (IKA) to Istanbul (IST) in December 2025 (see full year).
One-Way flights
| 08 Dec | Pegasus Airlines | direct | |
| 11 Dec | Pegasus Airlines | direct | |
| 19 Dec | Pegasus Airlines | direct | |
| 15 Dec | Pegasus Airlines | direct | |
| 07 Dec | AJet | direct | |
| 30 Dec | AJet | direct | |
| 01 Dec | flydubai |
Also check the deals for return flights from Tehran to Istanbul in December.
The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.
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