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

Return flights

17 Sep - 20 Sep	Volaris
11 Sep - 17 Sep	Arajet
18 Sep - 25 Sep	Viva
02 Sep - 06 Sep	Viva
20 Sep - 27 Sep	Viva
19 Sep - 27 Sep	Aeromexico
17 Sep - 22 Sep	Aeromexico
13 Sep - 25 Sep	Viva
15 Sep - 20 Sep	Aeromexico
06 Sep - 23 Sep	Volaris
17 Sep - 09 Oct	Aeromexico
20 Sep - 01 Oct	Viva
25 Sep - 02 Oct	Mexicana
19 Sep - 01 Oct	Viva
30 Sep - 14 Oct	Viva
27 Sep - 31 Oct	Viva
23 Sep - 09 Oct	Volaris
28 Sep - 04 Oct	Viva
28 Sep - 06 Oct	Viva
14 Sep - 27 Oct	Viva

Also check the deals for one-way flights from Mexico City to Toronto 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 Toronto in September from 236€

Return flights