AirHint found the following cheapest return flights from Sydney (SYD) to Porto (OPO) in July 2025 (see full year).

Return flights

28 Jul - 11 Aug	British Airways
15 Jul - 20 Aug	Turkish Airlines
15 Jul - 19 Aug	Turkish Airlines
15 Jul - 30 Jul	Air China
16 Jul - 01 Aug	Etihad Airways
17 Jul - 24 Jul	British Airways
16 Jul - 23 Jul	Etihad Airways

Also check the deals for one-way flights from Sydney to Porto in July.

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 Porto in July from $1540

Return flights