AirHint found the following cheapest return flights from Sydney (SYD) to Barcelona (BCN) in October 2025 (see full year).

Return flights

19 Oct - 26 Oct	Air China
23 Oct - 07 Nov	Air China
17 Oct - 21 Nov	Turkish Airlines
09 Oct - 01 Nov	Turkish Airlines
10 Oct - 01 Nov	Turkish Airlines
09 Oct - 23 Oct	Turkish Airlines
24 Oct - 07 Nov	Turkish Airlines
09 Oct - 09 Nov	Turkish Airlines
23 Oct - 01 Nov	Turkish Airlines
21 Oct - 28 Oct	Air China
16 Oct - 25 Oct	Scoot Tigerair
12 Oct - 24 Oct	Turkish Airlines
14 Oct - 18 Oct	Etihad Airways
13 Oct - 03 Nov	Etihad Airways
05 Oct - 30 Oct	Air China
30 Oct - 22 Nov	Qatar Airways
13 Oct - 23 Oct	United
03 Oct - 31 Oct	Virgin Australia
03 Oct - 11 Oct	Air Canada

Also check the deals for one-way flights from Sydney to Barcelona in October.

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 Sydney to Barcelona in October from $885

Return flights