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

Return flights

02 May - 23 May	British Airways
12 May - 19 May	SWISS
01 May - 20 May	SWISS
26 May - 02 Jun	SWISS
08 May - 18 May	SWISS
19 May - 02 Jun	SWISS
07 May - 30 May	SWISS
02 May - 21 May	British Airways
04 May - 18 May	British Airways
24 May - 31 May	Finnair
09 May - 23 May	British Airways
13 May - 06 Jun	British Airways
11 May - 12 Jun	British Airways
19 May - 13 Jun	British Airways
18 May - 13 Jun	British Airways
24 May - 08 Jun	Iberia
17 May - 23 May	Iberia
27 May - 20 Jun	British Airways
23 May - 13 Jun	British Airways
24 May - 13 Jun	British Airways

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.

Book a cheap hotel in Rome

Cheap car rent in Rome

Cheapest return flights from Ontario to Rome in May from $750

Return flights