AirHint found the following cheapest return flights from Quebec (YQB) to Cancun (CUN) in September 2025 (see full year).

Return flights

23 Sep - 30 Sep	United
20 Sep - 27 Sep	United
19 Sep - 27 Sep	United
30 Sep - 07 Oct	United
23 Sep - 07 Oct	United
24 Sep - 15 Oct	United
28 Sep - 24 Oct	United
28 Sep - 03 Oct	United
28 Sep - 12 Oct	United
29 Sep - 06 Oct	Air Canada
26 Sep - 17 Oct	United
21 Sep - 25 Sep	Air Canada
30 Sep - 19 Oct	United
29 Sep - 05 Oct	Air Canada
21 Sep - 28 Sep	Air Transat	direct
23 Sep - 28 Sep	PAL Airlines

Also check the deals for one-way flights from Quebec to Cancun 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 Quebec to Cancun in September from $300

Return flights