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

Return flights

20 Aug - 28 Aug	WestJet
22 Aug - 29 Aug	WestJet
24 Aug - 31 Aug	WestJet
26 Aug - 02 Sep	WestJet
27 Aug - 03 Sep	WestJet
02 Aug - 09 Aug	WestJet
03 Aug - 10 Aug	WestJet
04 Aug - 11 Aug	WestJet
06 Aug - 13 Aug	WestJet
07 Aug - 14 Aug	WestJet
08 Aug - 15 Aug	WestJet
09 Aug - 16 Aug	WestJet
25 Aug - 01 Sep	WestJet
28 Aug - 04 Sep	WestJet
30 Aug - 06 Sep	WestJet
29 Aug - 05 Sep	WestJet
31 Aug - 07 Sep	WestJet
25 Aug - 01 Sep	Air Transat	direct
27 Aug - 03 Sep	Air Transat	direct
31 Aug - 07 Sep	Air Transat	direct

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 268€

Return flights