Cheapest return flights from Ulaanbaatar to Hanoi in December from $640

AirHint found the following cheapest return flights from Ulaanbaatar (UBN) to Hanoi (HAN) in December 2025 (see full year).

Return flights

06 Dec - 18 Dec Korean Air
10 Dec - 13 Dec Cathay Pacific
13 Dec - 20 Dec Cathay Pacific
23 Dec - 31 Dec Cathay Pacific
17 Dec - 01 Jan Korean Air
29 Dec - 06 Jan Korean Air
31 Dec - 04 Jan Cathay Pacific
22 Dec - 30 Dec Air China
26 Dec - 02 Jan Korean Air
26 Dec - 28 Dec Korean Air
26 Dec - 03 Jan Korean Air
26 Dec - 09 Jan Korean Air
22 Dec - 05 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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