AirHint found the following cheapest return flights from Ontario (ONT) to Milano (MXP) in December 2025 (see full year).
Return flights
| 07 Dec - 14 Dec | Delta | ||
| 15 Dec - 29 Dec | Iberia | ||
| 23 Dec - 17 Jan | Iberia | ||
| 09 Dec - 03 Jan | Iberia | ||
| 11 Dec - 03 Jan | Iberia | ||
| 12 Dec - 26 Dec | Iberia |
Also check the deals for one-way flights from Ontario to Milano in December.
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