Cheapest return flights from Seoul to Ulaanbaatar in April from $236

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

Return flights

12 Apr - 23 Apr Jeju Air direct
07 Apr - 16 Apr Jeju Air direct
12 Apr - 16 Apr Jeju Air direct
07 Apr - 14 Apr Jeju Air direct
05 Apr - 14 Apr Jeju Air direct
21 Apr - 23 Apr Jeju Air direct
26 Apr - 30 Apr Jeju Air direct
16 Apr - 21 Apr Jeju Air direct
02 Apr - 16 Apr Jeju Air direct
09 Apr - 16 Apr Jeju Air direct
29 Apr - 04 May MIAT Mongolian Airlines direct
30 Apr - 03 May Jeju Air direct
21 Apr - 09 May Jeju Air direct
30 Apr - 05 May Jeju Air direct
24 Apr - 01 May Korean Air direct
29 Apr - 06 May Korean Air direct
30 Apr - 06 May Korean Air direct

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

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