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

Return flights

10 Jan - 18 Jan	Air China
23 Jan - 31 Jan	Korean Air
24 Jan - 31 Jan	Korean Air
22 Jan - 01 Feb	Korean Air
23 Jan - 01 Feb	Korean Air
24 Jan - 02 Feb	Korean Air
24 Jan - 01 Feb	Korean Air
21 Jan - 31 Jan	Air China
22 Jan - 31 Jan	Air China

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

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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Cheapest return flights from Bangkok to Ulaanbaatar in January from 820€

Return flights