AirHint found the following cheapest one-way flights from Ontario (ONT) to Rome (FCO) in December 2025 (see full year).
One-Way flights
| 05 Dec | Frontier Airlines | ||
| 30 Dec | Iberia | ||
| 07 Dec | Iberia | ||
| 10 Dec | British Airways | ||
| 03 Dec | British Airways | ||
| 28 Dec | Iberia | ||
| 31 Dec | Iberia | ||
| 01 Dec | Iberia | ||
| 02 Dec | Iberia | ||
| 06 Dec | Iberia |
Also check the deals for return flights from Ontario to Rome in December.
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