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

Return flights

03 Sep - 10 Sep	Air Canada
02 Sep - 11 Sep	Air Canada
03 Sep - 17 Sep	Air Canada
15 Sep - 24 Sep	Air Canada
02 Sep - 16 Sep	Air Canada
02 Sep - 09 Sep	Air Canada
10 Sep - 17 Sep	Air Canada
02 Sep - 12 Sep	Air Canada
22 Sep - 30 Sep	United
01 Sep - 16 Sep	United
19 Sep - 03 Oct	Delta
26 Sep - 29 Oct	Delta
26 Sep - 03 Oct	Delta
25 Sep - 11 Oct	United
17 Sep - 01 Oct	TUI fly Belgium	direct
19 Sep - 01 Oct	TUI fly Belgium	direct
24 Sep - 01 Oct	TUI fly Belgium	direct
26 Sep - 01 Oct	TUI fly Belgium	direct
26 Sep - 15 Oct	TUI fly Belgium	direct

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 485€

Return flights