Cheapest return PUS–UBN flights, May

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

Return flights

06 May - 24 May Jeju Air direct
06 May - 14 May Jeju Air direct
06 May - 15 May Jeju Air direct
07 May - 14 May Jeju Air direct
21 May - 24 May Jeju Air direct
24 May - 29 May Jeju Air direct
24 May - 28 May Jeju Air direct
09 May - 15 May Jeju Air direct
13 May - 24 May Jeju Air direct
09 May - 14 May Jeju Air direct
14 May - 05 Jun Jeju Air direct
16 May - 05 Jun Jeju Air direct
29 May - 02 Jun Jin Air direct
28 May - 01 Jun Jeju Air direct
20 May - 01 Jun Jeju Air direct
28 May - 04 Jun Jeju Air direct
17 May - 07 Jun Jeju Air direct
14 May - 07 Jun Jeju Air direct
28 May - 02 Jun Korean Air
31 May - 03 Jun Korean Air

Also check the deals for one-way flights from Busan 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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