AirHint found the following cheapest return flights from Lisbon (LIS) to Sydney (SYD) in December 2026 (see full year).
Return flights
| 07 Dec - 06 Jan | Emirates | ||
| 26 Dec - 04 Jan | Etihad Airways | ||
| 26 Dec - 05 Jan | Etihad Airways | ||
| 16 Dec - 02 Jan | Etihad Airways |
Also check the deals for one-way flights from Lisbon to Sydney in December.
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