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

Return flights

05 Sep - 19 Sep	Volaris
08 Sep - 08 Oct	Volaris
07 Sep - 05 Oct	Volaris
09 Sep - 15 Sep	Viva
05 Sep - 05 Oct	Volaris
06 Sep - 15 Sep	Volaris
09 Sep - 18 Sep	Air Canada
06 Sep - 21 Sep	Volaris
11 Sep - 19 Sep	Volaris
01 Sep - 13 Sep	British Airways
02 Sep - 18 Sep	British Airways
10 Sep - 20 Sep	Air Canada
01 Sep - 08 Sep	British Airways
18 Sep - 04 Oct	Volaris
06 Sep - 05 Oct	Volaris
01 Sep - 04 Oct	Viva

Also check the deals for one-way flights from Mexico City to Brussels 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 Mexico City to Brussels in September from 775€

Return flights