Cheapest return UBN–PUS flights, May

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

Return flights

21 May - 28 May Jeju Air direct
24 May - 31 May Jeju Air direct
14 May - 27 May Jeju Air direct
03 May - 06 May Jeju Air direct
22 May - 29 May Jeju Air direct
17 May - 24 May Jeju Air direct
31 May - 07 Jun Jeju Air direct
14 May - 21 May Jeju Air direct
28 May - 04 Jun Jeju Air direct
03 May - 10 May Jeju Air direct
04 May - 11 May Jeju Air
29 May - 05 Jun Jeju Air
25 May - 01 Jun Jeju Air direct
02 May - 09 May MIAT Mongolian Airlines
30 May - 06 Jun Hunnu Air
26 May - 02 Jun Jeju Air
27 May - 03 Jun MIAT Mongolian Airlines
31 May - 05 Jun Korean Air

Also check the deals for one-way flights from Ulaanbaatar to Busan 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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