AirHint found the following cheapest return flights from Ontario (ONT) to Rome (FCO) in May 2026 (see full year).

Return flights

12 May - 19 May	Iberia
07 May - 21 May	Iberia
07 May - 14 May	British Airways
04 May - 18 May	SWISS
13 May - 18 May	SWISS
02 May - 23 May	SWISS
02 May - 16 May	SWISS
02 May - 10 May	SWISS
02 May - 09 May	SWISS
19 May - 02 Jun	Iberia
19 May - 26 May	Iberia
12 May - 06 Jun	jetBlue
19 May - 13 Jun	jetBlue
15 May - 06 Jun	jetBlue
25 May - 17 Jun	jetBlue
24 May - 07 Jun	jetBlue
23 May - 13 Jun	jetBlue
30 May - 14 Jun	jetBlue
30 May - 13 Jun	jetBlue
21 May - 13 Jun	jetBlue

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

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 May from $770

Return flights