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

Return flights

06 Sep - 13 Sep	Aeromexico
26 Sep - 30 Sep	Volaris
06 Sep - 04 Oct	Volaris
08 Sep - 24 Sep	British Airways
11 Sep - 25 Sep	Air Canada
14 Sep - 25 Sep	Air Canada
14 Sep - 24 Sep	British Airways
23 Sep - 15 Oct	Delta
14 Sep - 28 Sep	Air Canada
27 Sep - 13 Oct	United
12 Sep - 21 Sep	United
13 Sep - 20 Sep	United
12 Sep - 20 Sep	United

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 $796

Return flights