Cheapest return flights from Sydney to Ulaanbaatar in September from 572€

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

Return flights

09 Sep - 20 Sep VietJet Air
09 Sep - 16 Sep Jetstar
15 Sep - 22 Sep Jetstar
06 Sep - 22 Sep T'way Air
14 Sep - 24 Sep Jetstar
09 Sep - 04 Oct Jetstar
04 Sep - 20 Sep Air China
14 Sep - 04 Oct Jetstar
02 Sep - 16 Sep Qantas
02 Sep - 07 Sep Qantas
05 Sep - 16 Sep Cathay Pacific
26 Sep - 11 Oct Jetstar
12 Sep - 19 Sep Korean Air
23 Sep - 04 Oct Air China

Also check the deals for one-way flights from Sydney 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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