Cheapest return flights from Sydney to Ulaanbaatar in September from 631€

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

Return flights

09 Sep - 16 Sep VietJet Air
09 Sep - 15 Sep Air China
09 Sep - 22 Sep T'way Air
18 Sep - 26 Sep T'way Air
27 Sep - 03 Oct Air China
12 Sep - 16 Sep Qantas
19 Sep - 21 Sep Cathay Pacific
08 Sep - 10 Oct Cathay Pacific
30 Sep - 06 Oct Air China
26 Sep - 10 Oct Cathay Pacific
28 Sep - 03 Oct Cathay Pacific
27 Sep - 04 Oct Cathay Pacific
27 Sep - 05 Oct Cathay Pacific
18 Sep - 10 Oct Air China
09 Sep - 06 Oct Condor

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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