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

Return flights

04 Sep - 10 Sep	LATAM Airlines Group
04 Sep - 13 Sep	LATAM Airlines Group
08 Sep - 15 Sep	LATAM Airlines Group
05 Sep - 13 Sep	Sky Airline
27 Sep - 06 Oct	Avianca
04 Sep - 12 Sep	LATAM Airlines Group
02 Sep - 16 Sep	LATAM Airlines Group
02 Sep - 11 Sep	LATAM Airlines Group
29 Sep - 14 Oct	Avianca
04 Sep - 16 Sep	LATAM Airlines Group
30 Sep - 27 Oct	Avianca
16 Sep - 06 Oct	Avianca
22 Sep - 14 Oct	Avianca
21 Sep - 30 Sep	Sky Airline
05 Sep - 16 Sep	Sky Airline
28 Sep - 03 Oct	Avianca
21 Sep - 12 Oct	Sky Airline
14 Sep - 02 Oct	LATAM Airlines Group
24 Sep - 09 Oct	Avianca
26 Sep - 13 Oct	Avianca

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 845€

Return flights