AirHint found the following cheapest return flights from Mexico City (MEX) to Montreal (YUL) in August 2026 (see full year).

Return flights

21 Aug - 04 Sep	Flair Airlines
11 Aug - 18 Aug	WestJet
18 Aug - 30 Aug	WestJet
03 Aug - 16 Aug	WestJet
28 Aug - 08 Sep	WestJet
13 Aug - 22 Aug	WestJet
11 Aug - 23 Aug	WestJet
30 Aug - 03 Sep	Flair Airlines
01 Aug - 15 Aug	Aeromexico
02 Aug - 12 Aug	Arajet
18 Aug - 29 Aug	WestJet
03 Aug - 12 Aug	WestJet
03 Aug - 13 Aug	WestJet
13 Aug - 17 Sep	Delta
30 Aug - 03 Sep	Air Canada	direct
28 Aug - 08 Sep	Aeromexico	direct

Also check the deals for one-way flights from Mexico City to Montreal in August.

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 Montreal in August from $594

Return flights