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

Return flights

06 May - 13 May	TAP
06 May - 12 May	TAP
10 May - 30 May	TAP
18 May - 22 May	Scandinavian Airlines
13 May - 19 May	TAP
17 May - 23 May	Scandinavian Airlines
10 May - 20 May	TAP
06 May - 20 May	TAP
12 May - 19 May	Spirit Airlines
05 May - 12 May	Spirit Airlines
22 May - 04 Jun	TAP
29 May - 11 Jun	TAP
30 May - 14 Jun	Icelandair
20 May - 03 Jun	Spirit Airlines
25 May - 09 Jun	Finnair
24 May - 06 Jun	TAP
26 May - 09 Jun	Icelandair
31 May - 08 Jun	Icelandair
26 May - 02 Jun	Lufthansa
16 May - 02 Jun	Spirit Airlines

Also check the deals for one-way flights from Chicago 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 Chicago to Rome in May from $404

Return flights