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

Return flights

04 Sep - 11 Sep	Air France
06 Sep - 14 Sep	Air France
17 Sep - 24 Sep	Air Canada
06 Sep - 17 Sep	Air France
01 Sep - 07 Sep	Air France
27 Sep - 11 Oct	SWISS
03 Sep - 14 Sep	Delta
13 Sep - 21 Sep	Air Canada
15 Sep - 28 Sep	Air Canada
04 Sep - 10 Sep	Air Canada
15 Sep - 22 Sep	Air Canada
21 Sep - 21 Oct	Air Canada
21 Sep - 23 Oct	Air Canada
21 Sep - 26 Oct	Air Canada
21 Sep - 22 Oct	Air Canada
21 Sep - 25 Oct	Air Canada
28 Sep - 28 Oct	Air Europa
28 Sep - 30 Oct	Air Europa
29 Sep - 03 Oct	Air Canada
21 Sep - 24 Oct	TAP

Also check the deals for one-way flights from Lisbon 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 Lisbon to Cancun in September from 515€

Return flights