AirHint found the following cheapest return flights from Montreal (YUL) to Charleroi (CRL) in October 2025 (see full year).

Return flights

04 Oct - 14 Oct	WestJet
01 Oct - 08 Oct	Air Transat
02 Oct - 09 Oct	WestJet
06 Oct - 16 Oct	Air Transat
06 Oct - 13 Oct	Air Transat
07 Oct - 14 Oct	Air Transat
14 Oct - 21 Oct	Air Transat
12 Oct - 19 Oct	Air Transat
09 Oct - 19 Oct	Air Transat
11 Oct - 21 Oct	Air Transat
27 Oct - 03 Nov	Porter Airlines (Canada) Ltd
29 Oct - 05 Nov	Air Transat
12 Oct - 02 Nov	Air Transat
26 Oct - 02 Nov	Air Transat
31 Oct - 07 Nov	FrenchBee
30 Oct - 06 Nov	Air Transat

Also check the deals for one-way flights from Montreal to Charleroi in October.

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 Montreal to Charleroi in October from $687

Return flights