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

Return flights

27 Dec - 03 Jan	Ryanair
01 Dec - 15 Dec	Air Canada
03 Dec - 17 Dec	Air Canada
04 Dec - 17 Dec	Turkish Airlines
05 Dec - 11 Dec	Turkish Airlines
13 Dec - 01 Jan	Turkish Airlines
18 Dec - 28 Dec	Turkish Airlines
14 Dec - 14 Jan	Emirates
18 Dec - 03 Jan	Turkish Airlines
30 Dec - 10 Jan	Emirates
28 Dec - 04 Jan	Emirates
27 Dec - 04 Jan	Emirates
27 Dec - 01 Jan	Emirates

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

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.

Book a cheap hotel in Sydney

Cheap car rent in Sydney

Cheapest return flights from Lisbon to Sydney in December from $1530

Return flights