AirHint found the following cheapest return flights from Singapore (SIN) to Ulaanbaatar (UBN) in January 2026 (see full year).
Return flights
| 11 Jan - 16 Jan | Air China | ||
| 01 Jan - 04 Jan | Jeju Air | ||
| 03 Jan - 06 Jan | Air China |
Also check the deals for one-way flights from Singapore to Ulaanbaatar in January.
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