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

Return flights

23 Sep - 27 Sep	Asiana Airlines
24 Sep - 29 Sep	Asiana Airlines
17 Sep - 24 Sep	ANA
24 Sep - 01 Oct	Asiana Airlines
23 Sep - 29 Sep	Asiana Airlines
19 Sep - 24 Sep	StarFlyer
24 Sep - 27 Sep	Asiana Airlines
23 Sep - 26 Sep	Asiana Airlines
26 Sep - 29 Sep	Asiana Airlines
30 Sep - 07 Oct	Air China
18 Sep - 25 Sep	Air China
29 Sep - 06 Oct	Peach
24 Sep - 26 Sep	Asiana Airlines
28 Sep - 03 Oct	Air China
26 Sep - 03 Oct	Air China
25 Sep - 02 Oct	Skymark Airlines
30 Sep - 11 Oct	Peach
28 Sep - 05 Oct	Air China
29 Sep - 05 Oct	Air China
27 Sep - 04 Oct	Asiana Airlines

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

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 September from $478

Return flights