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

Return flights

03 Dec - 08 Dec	British Airways
10 Dec - 15 Dec	British Airways
03 Dec - 12 Dec	Iberia
02 Dec - 12 Dec	British Airways
15 Dec - 24 Dec	British Airways
05 Dec - 11 Dec	British Airways
07 Dec - 21 Dec	British Airways
01 Dec - 12 Dec	Iberia
13 Dec - 23 Dec	British Airways
11 Dec - 21 Dec	British Airways
30 Dec - 05 Jan	British Airways
10 Dec - 08 Jan	British Airways
27 Dec - 06 Jan	Iberia
29 Dec - 06 Jan	British Airways
29 Dec - 04 Jan	British Airways
23 Dec - 05 Jan	Iberia
21 Dec - 01 Jan	British Airways
21 Dec - 04 Jan	British Airways
19 Dec - 01 Jan	British Airways
22 Dec - 02 Jan	British Airways

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 $509

Return flights