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

Return flights

01 Sep - 11 Sep	Avianca
23 Sep - 30 Sep	Avianca
24 Sep - 30 Sep	Avianca
01 Sep - 08 Sep	Avianca
19 Sep - 30 Sep	Avianca
06 Sep - 15 Sep	Avianca
01 Sep - 14 Sep	Avianca
16 Sep - 30 Sep	Avianca
30 Sep - 08 Oct	Avianca
26 Sep - 03 Oct	Avianca
25 Sep - 02 Oct	Avianca
28 Sep - 05 Oct	Avianca
02 Sep - 13 Sep	Avianca
02 Sep - 08 Sep	Avianca
29 Sep - 06 Oct	Avianca
29 Sep - 08 Oct	Avianca
22 Sep - 02 Oct	Avianca
27 Sep - 03 Oct	Avianca
27 Sep - 06 Oct	LATAM Airlines Group

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 325€

Return flights