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

Return flights

08 Sep - 15 Sep	FrenchBee
02 Sep - 09 Sep	Air Transat
24 Sep - 01 Oct	FrenchBee
14 Sep - 21 Sep	FrenchBee
23 Sep - 28 Sep	Air Transat
04 Sep - 11 Sep	Air Transat
21 Sep - 28 Sep	Air Transat
13 Sep - 28 Sep	Air Transat
15 Sep - 22 Sep	FrenchBee
17 Sep - 24 Sep	Air Transat
11 Sep - 18 Sep	Air Transat
24 Sep - 08 Oct	Air Transat
02 Sep - 27 Oct	Air Transat
30 Sep - 07 Oct	Air Transat
25 Sep - 09 Oct	Air Transat
28 Sep - 05 Oct	FrenchBee
29 Sep - 06 Oct	Air Transat
17 Sep - 02 Oct	Air Transat
25 Sep - 02 Oct	Air Transat
23 Sep - 01 Oct	Air Transat

Also check the deals for one-way flights from Montreal 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.

Book a cheap hotel in Charleroi

Cheap car rent in Charleroi

Cheapest return flights from Montreal to Charleroi in September from $639

Return flights