AirHint found the following cheapest return flights from Ontario (ONT) to Rome (FCO) in December 2025 (see full year).

Return flights

29 Dec - 24 Jan	Air Canada
23 Dec - 17 Jan	British Airways
15 Dec - 10 Jan	British Airways
05 Dec - 14 Dec	British Airways
05 Dec - 15 Dec	British Airways
10 Dec - 24 Dec	British Airways
01 Dec - 27 Dec	British Airways
13 Dec - 27 Dec	British Airways
13 Dec - 20 Dec	British Airways
24 Dec - 02 Jan	Iberia
23 Dec - 02 Jan	British Airways
23 Dec - 03 Jan	British Airways
24 Dec - 30 Dec	Iberia
23 Dec - 01 Jan	KLM
11 Dec - 03 Jan	British Airways
12 Dec - 03 Jan	British Airways
08 Dec - 03 Jan	KLM
22 Dec - 29 Dec	British Airways
17 Dec - 30 Dec	British Airways
13 Dec - 18 Dec	Iberia

Also check the deals for one-way flights from Ontario to Rome in December.

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 Ontario to Rome in December from $562

Return flights