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

Return flights

27 Aug - 03 Sep	WestJet
26 Aug - 02 Sep	WestJet
19 Aug - 12 Sep	WestJet
05 Aug - 09 Aug	Arajet
13 Aug - 20 Aug	WestJet
06 Aug - 13 Aug	WestJet
20 Aug - 27 Aug	WestJet
11 Aug - 20 Aug	WestJet
31 Aug - 07 Sep	Porter Airlines (Canada) Ltd
26 Aug - 02 Sep	Air Canada	direct
05 Aug - 12 Aug	Air Canada	direct
12 Aug - 19 Aug	Air Canada	direct
19 Aug - 26 Aug	Air Canada	direct
24 Aug - 31 Aug	Air Canada
25 Aug - 01 Sep	Air Canada
19 Aug - 12 Sep	Air Canada	direct
03 Aug - 10 Aug	Air Canada
31 Aug - 06 Sep	Air Canada
30 Aug - 06 Sep	Air Canada
29 Aug - 05 Sep	WestJet

Also check the deals for one-way flights from Montreal to Cancun 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 Montreal to Cancun in August from $405

Return flights