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

Return flights

22 Sep - 30 Sep	Arajet
22 Sep - 28 Sep	Arajet
22 Sep - 03 Oct	Avianca
20 Sep - 30 Sep	Avianca
17 Sep - 24 Sep	Avianca
08 Sep - 13 Sep	Avianca
07 Sep - 14 Sep	Avianca
30 Sep - 06 Oct	Avianca
23 Sep - 01 Oct	Avianca
29 Sep - 08 Oct	Avianca
29 Sep - 03 Oct	Avianca
28 Sep - 06 Oct	Avianca
26 Sep - 03 Oct	Avianca
28 Sep - 05 Oct	Avianca
30 Sep - 07 Oct	Avianca
27 Sep - 01 Oct	Avianca
16 Sep - 30 Sep	Avianca
21 Sep - 24 Sep	Avianca
07 Sep - 13 Sep	Avianca
08 Sep - 14 Sep	Avianca

Also check the deals for one-way flights from Santiago 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 Santiago to Cancun in September from 381€

Return flights