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

Return flights

12 Sep - 19 Sep	Avianca
13 Sep - 20 Sep	Avianca
15 Sep - 22 Sep	Avianca
12 Sep - 27 Sep	Avianca
13 Sep - 26 Sep	Avianca
04 Sep - 10 Sep	Avianca
03 Sep - 09 Sep	Avianca
12 Sep - 17 Sep	Avianca
03 Sep - 08 Sep	Avianca
05 Sep - 10 Sep	Avianca
11 Sep - 21 Oct	Avianca
12 Sep - 22 Oct	Avianca
17 Sep - 08 Oct	Avianca
25 Sep - 14 Oct	Avianca
23 Sep - 07 Oct	Avianca
24 Sep - 08 Oct	Avianca
21 Sep - 01 Oct	Aeromexico
22 Sep - 02 Oct	Aeromexico
23 Sep - 01 Oct	Aeromexico
22 Sep - 18 Oct	Aeromexico

Also check the deals for one-way flights from Cancun to Buenos Aires 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 Buenos Aires in September from 470€

Return flights