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

Return flights

19 Dec - 09 Jan	Air China
03 Dec - 10 Dec	Air China
14 Dec - 17 Dec	Air China
03 Dec - 06 Dec	Air China
04 Dec - 09 Dec	Air China
06 Dec - 08 Dec	Air China
22 Dec - 28 Dec	Asiana Airlines
14 Dec - 28 Dec	Asiana Airlines
01 Dec - 08 Dec	Air China
22 Dec - 29 Dec	Air China
23 Dec - 09 Jan	Air China
22 Dec - 27 Dec	Air China
28 Dec - 01 Jan	Tianjin Airlines
30 Dec - 01 Jan	Korean Air
29 Dec - 04 Jan	Asiana Airlines
26 Dec - 06 Jan	Asiana Airlines
29 Dec - 03 Jan	Korean Air
28 Dec - 04 Jan	Korean Air
25 Dec - 03 Jan	Korean Air
28 Dec - 02 Jan	Korean Air

Also check the deals for one-way flights from Tokyo to Ulaanbaatar in December.

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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Cheapest return flights from Tokyo to Ulaanbaatar in December from $499

Return flights