AirHint found the following cheapest return flights from Ulaanbaatar (UBN) to Hanoi (HAN) in December 2025 (see full year).
Return flights
| 15 Dec - 23 Dec | Air China | ||
| 16 Dec - 23 Dec | Air China | ||
| 26 Dec - 04 Jan | Air China | ||
| 25 Dec - 04 Jan | Air China | ||
| 29 Dec - 09 Jan | Korean Air |
Also check the deals for one-way flights from Ulaanbaatar to Hanoi in December.
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The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.
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