Cheapest return flights from Seoul to Ulaanbaatar in May from 199€

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

Return flights

12 May - 19 May Jeju Air direct
10 May - 12 May Jeju Air direct
10 May - 14 May Jeju Air direct
24 May - 28 May Jeju Air direct
26 May - 28 May Jeju Air direct
05 May - 12 May Jeju Air direct
14 May - 19 May Jeju Air direct
28 May - 02 Jun Jeju Air direct
25 May - 29 May MIAT Mongolian Airlines direct
21 May - 26 May Jeju Air direct
31 May - 04 Jun Jeju Air direct
05 May - 10 May Jeju Air direct
28 May - 04 Jun Jeju Air direct
30 May - 03 Jun Asiana Airlines direct
30 May - 06 Jun Asiana Airlines direct
08 May - 27 Jun MIAT Mongolian Airlines direct
29 May - 03 Jun Korean Air direct
29 May - 01 Jun Korean Air direct

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

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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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