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

Return flights

29 Sep - 23 Oct	Avianca
20 Sep - 27 Sep	Avianca
29 Sep - 06 Oct	Avianca
21 Sep - 15 Oct	Avianca
21 Sep - 16 Oct	Avianca
16 Sep - 23 Sep	LATAM Airlines Group
27 Sep - 16 Oct	Avianca
26 Sep - 16 Oct	LATAM Airlines Group
24 Sep - 15 Oct	LATAM Airlines Group
24 Sep - 16 Oct	LATAM Airlines Group
18 Sep - 23 Sep	LATAM Airlines Group
29 Sep - 29 Oct	Avianca
15 Sep - 23 Sep	Avianca
19 Sep - 22 Sep	Avianca
30 Sep - 23 Oct	LATAM Airlines Group
20 Sep - 24 Sep	Avianca
15 Sep - 22 Sep	Avianca
18 Sep - 22 Sep	LATAM Airlines Group
21 Sep - 25 Sep	Avianca
17 Sep - 23 Sep	LATAM Airlines Group

Also check the deals for one-way flights from Santiago to Barcelona 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 Barcelona in September from $982

Return flights