AirHint found the following cheapest return flights from Ontario (ONT) to Ulaanbaatar (UBN) in June 2026 (see full year).
Return flights
| 14 Jun - 28 Jun | China Airlines | ||
| 13 Jun - 27 Jun | Alaska Airlines | ||
| 20 Jun - 12 Jul | jetBlue | ||
| 18 Jun - 12 Jul | Alaska Airlines |
Also check the deals for one-way flights from Ontario to Ulaanbaatar in June.
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