Cheapest return UBN–BKK flights, May

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

Return flights

14 May - 21 May Jeju Air
24 May - 31 May Jeju Air
27 May - 03 Jun Hunnu Air
02 May - 09 May Spring Airlines
15 May - 22 May Hunnu Air
21 May - 28 May Jeju Air
30 May - 06 Jun Hunnu Air
17 May - 24 May Jeju Air
18 May - 25 May Jeju Air
29 May - 05 Jun Jeju Air
25 May - 01 Jun MIAT Mongolian Airlines
01 May - 08 May MIAT Mongolian Airlines
20 May - 27 May Air China
07 May - 14 May Spring Airlines
31 May - 07 Jun Jeju Air
28 May - 04 Jun MIAT Mongolian Airlines
26 May - 02 Jun Air China
31 May - 05 Jun Air China
01 May - 01 Jun Korean Air
01 May - 05 Jun Korean Air

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