AirHint found the following cheapest one-way flights from Kathmandu (KTM) to Sydney (SYD) in December 2025 (see full year).
One-Way flights
| 12 Dec | Bhutan Airlines | ||
| 17 Dec | Nepal Airlines | ||
| 07 Dec | Nepal Airlines | ||
| 16 Dec | Air India | ||
| 11 Dec | Air India | ||
| 26 Dec | Air India | ||
| 22 Dec | Thai AirAsia | ||
| 18 Dec | Air India | ||
| 05 Dec | Air India | ||
| 09 Dec | Air India |
Also check the deals for return flights from Kathmandu to Sydney in December.
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