AirHint found the following cheapest return flights from Seoul (GMP) to Ulaanbaatar (UBN) in July 2026 (see full year).

Return flights

19 Jul - 26 Jul	Air China
24 Jul - 27 Jul	Air China
11 Jul - 18 Jul	Air China
25 Jul - 28 Jul	Air China
14 Jul - 21 Jul	Air China
09 Jul - 15 Jul	Air China
01 Jul - 15 Jul	Air China
17 Jul - 21 Jul	Air China
05 Jul - 11 Jul	Air China
09 Jul - 13 Jul	Air China
31 Jul - 05 Aug	Air China
26 Jul - 01 Aug	Air China
25 Jul - 01 Aug	Air China
18 Jul - 15 Aug	Air China
18 Jul - 16 Aug	Air China
27 Jul - 01 Aug	Air China

Also check the deals for one-way flights from Seoul 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 Seoul to Ulaanbaatar in July from $585

Return flights