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

Return flights

20 Dec - 01 Jan	Asiana Airlines
24 Dec - 04 Jan	Asiana Airlines
30 Dec - 04 Jan	Asiana Airlines
31 Dec - 04 Jan	Asiana Airlines
26 Dec - 04 Jan	Asiana Airlines
25 Dec - 01 Jan	Korean Air
27 Dec - 29 Dec	Korean Air
27 Dec - 04 Jan	Korean Air
26 Dec - 02 Jan	Korean Air
27 Dec - 31 Dec	Korean Air
27 Dec - 02 Jan	Korean Air
26 Dec - 03 Jan	Air China

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 529€

Return flights