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

Return flights

07 Dec - 11 Dec	Air China
07 Dec - 10 Dec	Air China
16 Dec - 21 Dec	Air China
03 Dec - 10 Dec	Air China
22 Dec - 29 Dec	Air China
22 Dec - 24 Dec	Air China
12 Dec - 15 Dec	Air China
07 Dec - 14 Dec	Air China
20 Dec - 22 Dec	Air China
22 Dec - 22 Jan	Asiana Airlines
09 Dec - 12 Dec	Air China
26 Dec - 08 Jan	Air China
25 Dec - 02 Jan	Peach
25 Dec - 12 Jan	Korean Air
30 Dec - 06 Jan	Air China
25 Dec - 05 Jan	Korean Air
28 Dec - 06 Jan	Peach
30 Dec - 05 Jan	Air China
28 Dec - 01 Jan	Air China
26 Dec - 03 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 404€

Return flights