AirHint found the following cheapest return flights from Melbourne (MEL) to Tongatapu (TBU) in December 2025 (see full year).
Return flights
| 22 Dec - 26 Dec | Virgin Australia | ||
| 01 Dec - 29 Dec | Fiji Airways | ||
| 23 Dec - 02 Jan | Fiji Airways | ||
| 23 Dec - 17 Jan | Qantas | ||
| 24 Dec - 02 Jan | Fiji Airways |
Also check the deals for one-way flights from Melbourne to Tongatapu in December.
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