AirHint found the following cheapest one-way flights from Kathmandu (KTM) to Hanoi (HAN) in December 2025 (see full year).
One-Way flights
| 30 Dec | Air India | ||
| 29 Dec | Thai Lion Air | ||
| 28 Dec | Thai Lion Air | ||
| 31 Dec | Air India |
Also check the deals for return flights from Kathmandu to Hanoi in December.
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