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

Return flights

05 May - 13 May	Icelandair
15 May - 22 May	Scandinavian Airlines
15 May - 25 May	Scandinavian Airlines
04 May - 14 May	Scandinavian Airlines
02 May - 16 May	Scandinavian Airlines
01 May - 23 May	Scandinavian Airlines
15 May - 06 Jun	TAP
15 May - 24 May	Scandinavian Airlines
15 May - 23 May	Scandinavian Airlines
13 May - 06 Jun	TAP
16 May - 23 May	Scandinavian Airlines
30 May - 09 Jun	TAP
29 May - 11 Jun	TAP
20 May - 28 May	TAP
22 May - 13 Jun	TAP
23 May - 04 Jun	TAP
29 May - 09 Jun	TAP
28 May - 04 Jun	SWISS
29 May - 20 Jun	TAP
19 May - 13 Jun	Air Canada

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 $514

Return flights