AirHint found the following cheapest return flights from Istanbul (IST) to Charleroi (CRL) in September 2025 (see full year).

Return flights

26 Sep - 30 Sep	Turkish Airlines
10 Sep - 17 Sep	Wizz Air
10 Sep - 14 Sep	Wizz Air
08 Sep - 15 Sep	Wizz Air
11 Sep - 21 Sep	Wizz Air
03 Sep - 10 Sep	Wizz Air
11 Sep - 16 Sep	Wizz Air
19 Sep - 28 Sep	Wizz Air
18 Sep - 21 Sep	Wizz Air
11 Sep - 18 Sep	Wizz Air
16 Sep - 15 Oct	Turkish Airlines
29 Sep - 05 Oct	Turkish Airlines
29 Sep - 05 Oct	Pegasus Airlines	direct

Also check the deals for one-way flights from Istanbul to Charleroi 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 Istanbul to Charleroi in September from $156

Return flights