AirHint found the following cheapest return flights from Istanbul (IST) to Tehran (IKA) in December 2025 (see full year).

Return flights

04 Dec - 08 Dec	AZAL
05 Dec - 15 Dec	AZAL
10 Dec - 15 Dec	AZAL
18 Dec - 22 Dec	AZAL
13 Dec - 10 Jan	AZAL
25 Dec - 10 Jan	AZAL
12 Dec - 23 Jan	Pegasus Airlines
11 Dec - 18 Dec	AZAL
05 Dec - 08 Dec	AZAL
12 Dec - 23 Jan	Pegasus Airlines	direct
10 Dec - 15 Dec	AJet	direct
11 Dec - 18 Dec	Pegasus Airlines	direct
04 Dec - 08 Dec	Pegasus Airlines	direct
04 Dec - 07 Dec	AJet	direct
25 Dec - 10 Jan	AJet	direct
13 Dec - 10 Jan	AJet	direct
18 Dec - 11 Jan	AZAL
18 Dec - 11 Jan	Turkish Airlines	direct

Also check the deals for one-way flights from Istanbul to Tehran 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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Cheapest return flights from Istanbul to Tehran in December from 35€

Return flights