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

Return flights

28 Sep - 26 Oct	Spirit Airlines
04 Sep - 18 Sep	jetBlue
04 Sep - 15 Sep	jetBlue
12 Sep - 16 Sep	Spirit Airlines
14 Sep - 28 Sep	jetBlue
28 Sep - 05 Oct	Iberojet (Portugal)	direct
25 Sep - 02 Oct	Air Europa
03 Sep - 20 Sep	Spirit Airlines
02 Sep - 11 Sep	jetBlue
07 Sep - 21 Sep	jetBlue
29 Sep - 08 Oct	jetBlue
21 Sep - 05 Oct	jetBlue
03 Sep - 17 Sep	Spirit Airlines
01 Sep - 04 Oct	Iberojet

Also check the deals for one-way flights from Cancun to Lisbon 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 Cancun to Lisbon in September from 622€

Return flights