AirHint found the following cheapest one-way flights from Lisbon (LIS) to Sydney (SYD) in December 2025 (see full year).
One-Way flights
| 01 Dec | Ryanair | ||
| 03 Dec | Vueling Airlines | ||
| 12 Dec | Ryanair | ||
| 06 Dec | Ryanair | ||
| 11 Dec | Aegean Airlines | ||
| 16 Dec | Ryanair | ||
| 17 Dec | Aegean Airlines | ||
| 14 Dec | Aegean Airlines | ||
| 18 Dec | Air Serbia | ||
| 22 Dec | Ryanair |
Also check the deals for return 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.
Find us on social media