AirHint found the following cheapest return flights from Seoul (GMP) to Ulaanbaatar (UBN) in November 2025 (see full year).

Return flights

17 Nov - 21 Nov	Air China
27 Nov - 04 Dec	Air China
26 Nov - 03 Dec	Air China
10 Nov - 13 Nov	Air China
16 Nov - 19 Nov	Air China
02 Nov - 06 Nov	Air China
19 Nov - 24 Nov	Air China
27 Nov - 30 Nov	Air China
12 Nov - 14 Nov	Air China
10 Nov - 14 Nov	Air China
07 Nov - 10 Nov	Air China
05 Nov - 12 Nov	Air China

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

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 November from $321

Return flights