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

Return flights

02 Jul - 23 Aug	Air China
20 Jul - 27 Jul	Air China
24 Jul - 29 Jul	Air China
14 Jul - 24 Jul	Air China
13 Jul - 24 Jul	Air China
06 Jul - 10 Jul	Air China
23 Jul - 28 Jul	Air China
17 Jul - 25 Jul	Air China
26 Jul - 01 Aug	Air China
06 Jul - 11 Jul	Air China
16 Jul - 19 Jul	Air China
25 Jul - 02 Aug	Air China
15 Jul - 19 Jul	Air China
25 Jul - 01 Aug	Air China
31 Jul - 13 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 461€

Return flights