AirHint found the following cheapest return flights from Biarritz-bayonne (BIQ) to Charleroi (CRL) in September 2025 (see full year).

Return flights

24 Sep - 15 Oct	Ryanair	direct
26 Sep - 01 Oct	Ryanair	direct
26 Sep - 04 Oct	Ryanair	direct
26 Sep - 27 Sep	Ryanair	direct
17 Sep - 20 Sep	Ryanair	direct
10 Sep - 13 Sep	Ryanair	direct
20 Sep - 23 Sep	Ryanair	direct
23 Sep - 27 Sep	Ryanair	direct
19 Sep - 23 Sep	Ryanair	direct
10 Sep - 12 Sep	Ryanair	direct
17 Sep - 19 Sep	Ryanair	direct
30 Sep - 03 Oct	Ryanair	direct
08 Sep - 10 Sep	Ryanair
20 Sep - 22 Sep	Ryanair
30 Sep - 02 Oct	Ryanair

Also check the deals for one-way flights from Biarritz-bayonne 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 Biarritz-bayonne to Charleroi in September from $36

Return flights