Cheapest return flights from Hong Kong to Ulaanbaatar in September from $486

AirHint found the following cheapest return flights from Hong Kong (HKG) to Ulaanbaatar (UBN) in September 2026 (see full year).

Return flights

11 Sep - 20 Sep MIAT Mongolian Airlines direct
23 Sep - 28 Sep MIAT Mongolian Airlines direct
24 Sep - 28 Sep MIAT Mongolian Airlines direct
25 Sep - 30 Sep MIAT Mongolian Airlines direct
19 Sep - 28 Sep MIAT Mongolian Airlines direct
23 Sep - 29 Sep MIAT Mongolian Airlines
24 Sep - 29 Sep MIAT Mongolian Airlines
25 Sep - 29 Sep MIAT Mongolian Airlines
24 Sep - 30 Sep HK Express
24 Sep - 01 Oct Korean Air
22 Sep - 29 Sep Asiana Airlines

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

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