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

Return flights

23 Dec - 27 Dec	MIAT Mongolian Airlines	direct
10 Dec - 17 Dec	MIAT Mongolian Airlines	direct
22 Dec - 25 Dec	Jeju Air
06 Dec - 07 Dec	Jeju Air
03 Dec - 08 Dec	Air China
02 Dec - 06 Dec	Air China
19 Dec - 22 Dec	Air China
01 Dec - 06 Dec	Air China
13 Dec - 20 Dec	Air China
17 Dec - 19 Dec	Air China
30 Dec - 01 Jan	Korean Air
31 Dec - 04 Jan	Zipair
24 Dec - 10 Jan	Korean Air
26 Dec - 01 Jan	Korean Air
27 Dec - 01 Jan	Korean Air
30 Dec - 04 Jan	Korean Air
30 Dec - 02 Jan	Korean Air
27 Dec - 04 Jan	Korean Air
29 Dec - 05 Jan	Zipair
30 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.

Book a cheap hotel in Ulaanbaatar

Cheap car rent in Ulaanbaatar

Cheapest return flights from Tokyo to Ulaanbaatar in December from $356

Return flights