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

Return flights

01 Feb - 08 Feb	Air China
02 Feb - 09 Feb	Air China
04 Feb - 11 Feb	Air China
06 Feb - 13 Feb	Air China
07 Feb - 14 Feb	Air China
08 Feb - 15 Feb	Air China
05 Feb - 12 Feb	Air China
03 Feb - 06 Feb	Air China
05 Feb - 08 Feb	Air China
03 Feb - 10 Feb	Air China
27 Feb - 03 Mar	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 $288

Return flights