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

Return flights

27 Aug - 08 Sep	Ryanair
31 Aug - 12 Sep	Sichuan Airlines
20 Aug - 08 Sep	Air France
25 Aug - 08 Sep	Air France
24 Aug - 08 Sep	Air France
20 Aug - 10 Sep	Finnair
30 Aug - 23 Sep	Turkish Airlines
30 Aug - 12 Sep	Finnair
30 Aug - 19 Sep	Finnair
31 Aug - 13 Sep	Finnair
02 Aug - 09 Aug	Ryanair
01 Aug - 10 Aug	Ryanair
02 Aug - 10 Aug	Ryanair
01 Aug - 08 Aug	Ryanair
05 Aug - 12 Aug	Ryanair
06 Aug - 13 Aug	Ryanair
19 Aug - 26 Aug	Hainan Airlines
25 Aug - 31 Aug	Sichuan Airlines
04 Aug - 11 Aug	Ryanair
20 Aug - 27 Aug	Ryanair

Also check the deals for one-way flights from Madrid to Sydney in August.

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 Madrid to Sydney in August from $1057

Return flights