Cheapest return flights from Hong Kong to Ulaanbaatar in September from 320€

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

Return flights

08 Sep - 15 Sep HK Express
14 Sep - 19 Sep HK Express
11 Sep - 18 Sep HK Express
27 Sep - 01 Oct HK Express
26 Sep - 02 Oct T'way Air
27 Sep - 01 Oct MIAT Mongolian Airlines direct
07 Sep - 14 Sep HK Express
28 Sep - 05 Oct HK Express
18 Sep - 21 Sep Air China
01 Sep - 10 Sep Air China
19 Sep - 25 Sep HK Express
27 Sep - 07 Oct MIAT Mongolian Airlines direct
30 Sep - 07 Oct MIAT Mongolian Airlines direct
29 Sep - 04 Oct MIAT Mongolian Airlines direct
14 Sep - 28 Sep Jeju Air
08 Sep - 15 Sep Cathay Pacific direct
07 Sep - 14 Sep Cathay Pacific direct
28 Sep - 05 Oct Cathay Pacific direct

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

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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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