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

Return flights

13 Feb - 18 Feb	Air China
13 Feb - 19 Feb	Air China
08 Feb - 12 Feb	Air China
15 Feb - 19 Feb	Air China
27 Feb - 02 Mar	Air China
27 Feb - 03 Mar	Air China
04 Feb - 11 Feb	Air China
25 Feb - 01 Mar	Air China
23 Feb - 27 Feb	Air China
25 Feb - 27 Feb	Air China
13 Feb - 16 Feb	Air China
16 Feb - 21 Feb	Air China
20 Feb - 26 Feb	Air China

Also check the deals for one-way flights from Seoul to Ulaanbaatar in February.

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 February from $516

Return flights