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

Return flights

27 Jul - 31 Jul	Peach
06 Jul - 10 Jul	Air China
02 Jul - 09 Jul	Air China
02 Jul - 07 Jul	Air China
04 Jul - 11 Jul	Air China
02 Jul - 06 Jul	Air China
01 Jul - 05 Jul	Air China
01 Jul - 07 Jul	Air China
01 Jul - 04 Jul	Air China
15 Jul - 20 Jul	Air China
28 Jul - 02 Aug	Air China
23 Jul - 06 Aug	Air China
28 Jul - 06 Aug	Air China
26 Jul - 06 Aug	Air China
25 Jul - 02 Aug	Air China
02 Jul - 15 Aug	Air China
04 Jul - 15 Aug	Air China
28 Jul - 04 Aug	Air China
29 Jul - 02 Aug	Air China
26 Jul - 05 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 443€

Return flights