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

Return flights

07 Sep - 14 Sep	LATAM Airlines Group
08 Sep - 15 Sep	LATAM Airlines Group
21 Sep - 27 Sep	Avianca
03 Sep - 11 Sep	Avianca
08 Sep - 14 Sep	Avianca
21 Sep - 29 Sep	Avianca
05 Sep - 15 Sep	Avianca
03 Sep - 13 Sep	Avianca
02 Sep - 07 Sep	Avianca
01 Sep - 05 Sep	Avianca
29 Sep - 08 Oct	Avianca
24 Sep - 01 Oct	LATAM Airlines Group
25 Sep - 02 Oct	LATAM Airlines Group
26 Sep - 03 Oct	LATAM Airlines Group
29 Sep - 06 Oct	LATAM Airlines Group
30 Sep - 07 Oct	LATAM Airlines Group
24 Sep - 08 Oct	Copa
28 Sep - 12 Oct	Copa
24 Sep - 05 Oct	Copa

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 368€

Return flights