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

Return flights

29 Sep - 01 Oct	Wizz Air Malta
17 Sep - 24 Sep	Wizz Air
25 Sep - 02 Oct	Ryanair
27 Sep - 04 Oct	Wizz Air Malta
25 Sep - 26 Sep	Ryanair
20 Sep - 24 Sep	Wizz Air Malta
05 Sep - 09 Sep	Ryanair
19 Sep - 21 Sep	Ryanair
12 Sep - 15 Sep	Ryanair
05 Sep - 07 Sep	Ryanair
05 Sep - 12 Sep	Ryanair
26 Sep - 03 Oct	Ryanair
06 Sep - 07 Sep	Ryanair
12 Sep - 14 Sep	Ryanair
01 Sep - 13 Oct	Lufthansa

Also check the deals for one-way flights from Frankfurt 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 Frankfurt to Charleroi in September from 93€

Return flights