Cheapest return flights from Lisbon to Sydney in September from $1312

Best time to book flights for Lisbon (LIS) to Sydney (SYD) flights at AirHint

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

Return flights

01 Sep - 06 Sep Ryanair
02 Sep - 07 Sep Aegean Airlines
27 Sep - 18 Oct British Airways
19 Sep - 22 Sep British Airways
04 Sep - 28 Sep British Airways
16 Sep - 28 Sep British Airways
20 Sep - 04 Oct British Airways
15 Sep - 20 Sep British Airways

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

Skyscanner

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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