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

Return flights

24 Sep - 26 Oct	Ryanair
02 Sep - 19 Sep	Ryanair
15 Sep - 25 Sep	Ryanair
08 Sep - 24 Sep	Ryanair
19 Sep - 22 Sep	Pegasus Airlines
16 Sep - 14 Oct	Ryanair
23 Sep - 14 Oct	Ryanair
24 Sep - 08 Oct	Ryanair
09 Sep - 22 Sep	Ryanair
02 Sep - 17 Sep	Pegasus Airlines
09 Sep - 21 Sep	Ryanair
19 Sep - 26 Sep	Ryanair
01 Sep - 26 Sep	Ryanair
08 Sep - 20 Sep	Ryanair
27 Sep - 04 Oct	Ryanair
22 Sep - 03 Oct	Ryanair
28 Sep - 04 Oct	Ryanair
14 Sep - 14 Oct	Ryanair
21 Sep - 22 Oct	Ryanair
19 Sep - 04 Oct	Pegasus Airlines

Also check the deals for one-way flights from Charleroi to Bangkok 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 Charleroi to Bangkok in September from $643

Return flights