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

Return flights

13 Jul - 20 Aug	Air China
19 Jul - 30 Aug	Air China
15 Jul - 02 Aug	Air China
13 Jul - 14 Aug	Air China
25 Jul - 02 Aug	Air China
25 Jul - 08 Aug	Air China
18 Jul - 13 Aug	Air China
24 Jul - 07 Aug	Air China
22 Jul - 29 Jul	Air China
27 Jul - 23 Aug	Air China
19 Jul - 26 Jul	Air China
12 Jul - 27 Jul	Air China
14 Jul - 31 Jul	Air China
18 Jul - 26 Jul	Air China
14 Jul - 28 Jul	Air China
12 Jul - 28 Jul	Air China
17 Jul - 27 Jul	Air China
19 Jul - 01 Aug	Air China
10 Jul - 27 Jul	Air China
10 Jul - 31 Jul	Air China

Also check the deals for one-way flights from Sydney to Ulaanbaatar in July.

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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Cheapest return flights from Sydney to Ulaanbaatar in July from $833

Return flights