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

Return flights

16 Sep - 07 Oct	LATAM Airlines Group
10 Sep - 18 Sep	LATAM Airlines Group
18 Sep - 22 Sep	LATAM Airlines Group
09 Sep - 29 Oct	LATAM Airlines Group
09 Sep - 30 Oct	LATAM Airlines Group
09 Sep - 29 Sep	Avianca
08 Sep - 30 Sep	LATAM Airlines Group
09 Sep - 31 Oct	Avianca
02 Sep - 11 Sep	British Airways
14 Sep - 27 Sep	LATAM Airlines Group
16 Sep - 06 Oct	LATAM Airlines Group
12 Sep - 28 Sep	LATAM Airlines Group
11 Sep - 21 Sep	JetSmart
09 Sep - 20 Sep	LATAM Airlines Group
12 Sep - 21 Sep	LATAM Airlines Group
16 Sep - 08 Oct	Iberia

Also check the deals for one-way flights from Santiago 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 Santiago to Lisbon in September from $1169

Return flights