AirHint found the following cheapest return flights from Tunis (TUN) to Istanbul (IST) in September 2026 (see full year).

Return flights

12 Sep - 26 Sep	Nouvelair
13 Sep - 19 Sep	Aegean Airlines
12 Sep - 26 Sep	Nouvelair	direct
01 Sep - 09 Sep	Turkish Airlines	direct
01 Sep - 07 Sep	Turkish Airlines	direct
01 Sep - 10 Sep	Turkish Airlines	direct
02 Sep - 11 Sep	Turkish Airlines	direct
11 Sep - 18 Sep	Turkish Airlines	direct

Also check the deals for one-way flights from Tunis to Istanbul in September.

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 Tunis to Istanbul in September from 225€

Return flights