Cheapest return flights from Ulaanbaatar to Bangkok in September from $428

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

Return flights

14 Sep - 20 Sep T'way Air
02 Sep - 23 Sep Jin Air
09 Sep - 14 Sep Air China
26 Sep - 27 Sep Jin Air
11 Sep - 15 Sep Air China

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

Skyscanner

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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