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

Return flights

23 Oct - 06 Nov	Air China
19 Oct - 30 Oct	Air China
28 Oct - 11 Nov	Air China
23 Oct - 30 Oct	Air China
23 Oct - 04 Nov	Air China
21 Oct - 04 Nov	Air China
12 Oct - 22 Oct	Air China
04 Oct - 24 Oct	Air China
04 Oct - 22 Oct	Air China
12 Oct - 21 Oct	Air China
16 Oct - 07 Nov	Air China
30 Oct - 16 Nov	Cathay Pacific
20 Oct - 21 Nov	Cathay Pacific
14 Oct - 21 Oct	Air China
09 Oct - 27 Nov	Air China
16 Oct - 08 Nov	Air China
01 Oct - 29 Oct	China Eastern
23 Oct - 31 Oct	Air China
06 Oct - 10 Nov	Etihad Airways
13 Oct - 22 Oct	Etihad Airways

Also check the deals for one-way flights from Sydney to Madrid 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 Madrid in October from 719€

Return flights