AirHint found the following cheapest return flights from Billund (BLL) to Sydney (SYD) in December 2025 (see full year).
Return flights
| 04 Dec - 09 Dec | Turkish Airlines | ||
| 11 Dec - 28 Dec | Wizz Air Malta | ||
| 18 Dec - 08 Jan | Norwegian Air Sweden AOC | ||
| 18 Dec - 22 Dec | Norwegian Air Sweden AOC | ||
| 07 Dec - 18 Dec | Wizz Air Malta |
Also check the deals for one-way flights from Billund to Sydney in December.
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