AirHint found the following cheapest return flights from Brussels (BRU) to Cancun (CUN) in September 2025 (see full year).

Return flights

16 Sep - 30 Sep	British Airways
11 Sep - 18 Sep	British Airways
18 Sep - 30 Sep	British Airways
30 Sep - 12 Oct	British Airways
26 Sep - 10 Oct	British Airways
19 Sep - 26 Sep	British Airways
03 Sep - 17 Sep	Air Canada
10 Sep - 24 Sep	Air Canada
03 Sep - 24 Sep	Air Canada
10 Sep - 01 Oct	Air Canada
03 Sep - 01 Oct	Air Canada
17 Sep - 01 Oct	Air Canada
02 Sep - 24 Sep	Air Canada
02 Sep - 30 Sep	Air Canada
19 Sep - 01 Oct	British Airways
25 Sep - 29 Oct	British Airways
26 Sep - 30 Oct	British Airways
21 Sep - 28 Sep	British Airways
20 Sep - 04 Oct	British Airways
16 Sep - 06 Oct	United

Also check the deals for one-way flights from Brussels to Cancun 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 Brussels to Cancun in September from $556

Return flights