Cheapest return flights from Seoul to Ulaanbaatar in April from $203

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

Return flights

02 Apr - 09 Apr Jeju Air direct
02 Apr - 07 Apr Jeju Air direct
26 Apr - 30 Apr Jeju Air direct
09 Apr - 16 Apr Jeju Air direct
14 Apr - 21 Apr Jeju Air direct
26 Apr - 28 Apr Jeju Air direct
23 Apr - 28 Apr Jeju Air direct
21 Apr - 30 Apr Jeju Air direct
28 Apr - 30 Apr Jeju Air direct
14 Apr - 19 Apr Jeju Air direct
26 Apr - 10 May Jeju Air direct
28 Apr - 12 May Jeju Air direct
23 Apr - 07 May Jeju Air direct
29 Apr - 07 May Asiana Airlines direct
22 Apr - 03 May Asiana Airlines direct
22 Apr - 07 May Asiana Airlines direct
25 Apr - 03 May Asiana Airlines direct
25 Apr - 07 May Asiana Airlines direct
25 Apr - 10 May Asiana Airlines direct
27 Apr - 03 May Asiana Airlines direct

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

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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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