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

Return flights

20 May - 02 Jun	Arajet
25 May - 28 May	Arajet
17 May - 28 May	United
03 May - 09 May	United
02 May - 09 May	United
05 May - 09 May	United
05 May - 12 May	WestJet
05 May - 13 May	WestJet
04 May - 14 May	WestJet
08 May - 13 May	United
15 May - 19 May	Arajet
22 May - 07 Jun	WestJet
29 May - 07 Jun	WestJet
30 May - 06 Jun	WestJet
28 May - 04 Jun	WestJet
31 May - 07 Jun	WestJet
30 May - 07 Jun	WestJet
24 May - 25 Jun	WestJet
26 May - 02 Jun	United
27 May - 03 Jun	United

Also check the deals for one-way flights from Montreal to Cancun in May.

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 May from 273€

Return flights