Cheapest return flights from Singapore to Ulaanbaatar in September from $491

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

Return flights

21 Sep - 24 Sep T'way Air
10 Sep - 13 Sep T'way Air
13 Sep - 21 Sep Jeju Air
01 Sep - 02 Sep T'way Air
10 Sep - 19 Sep Jeju Air
22 Sep - 28 Sep Jeju Air
19 Sep - 21 Sep Jeju Air
03 Sep - 07 Sep Jeju Air
01 Sep - 07 Sep Jeju Air
12 Sep - 15 Sep Jeju Air
27 Sep - 07 Oct Scoot

Also check the deals for one-way flights from Singapore 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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