AirHint found the following cheapest return flights from Lisbon (LIS) to Sydney (SYD) in September 2025 (see full year).

Return flights

13 Sep - 04 Oct	Wizz Air Malta
13 Sep - 17 Sep	Wizz Air Malta
11 Sep - 17 Sep	Wizz Air Malta
25 Sep - 04 Oct	Ryanair
11 Sep - 16 Sep	Wizz Air Malta
02 Sep - 16 Sep	TAP
08 Sep - 15 Sep	Vueling Airlines
09 Sep - 16 Sep	easyJet
11 Sep - 25 Sep	Wizz Air Malta
15 Sep - 22 Sep	Ryanair
08 Sep - 13 Sep	Vueling Airlines
09 Sep - 17 Sep	TAP
16 Sep - 29 Oct	British Airways
02 Sep - 08 Oct	British Airways
24 Sep - 14 Oct	Etihad Airways
16 Sep - 24 Oct	British Airways

Also check the deals for one-way flights from Lisbon to Sydney 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 Lisbon to Sydney in September from $1027

Return flights