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

Return flights

03 Dec - 13 Dec	TAP
03 Dec - 10 Dec	TAP
07 Dec - 14 Dec	TAP
08 Dec - 15 Dec	Icelandair
03 Dec - 12 Dec	TAP
06 Dec - 18 Dec	Icelandair
11 Dec - 18 Dec	Icelandair
05 Dec - 14 Dec	TAP
01 Dec - 08 Dec	Icelandair
07 Dec - 13 Dec	TAP
31 Dec - 16 Jan	TAP
30 Dec - 11 Jan	Lufthansa
28 Dec - 11 Jan	Spirit Airlines
31 Dec - 07 Jan	Spirit Airlines
14 Dec - 10 Jan	Spirit Airlines
30 Dec - 09 Jan	SWISS
28 Dec - 12 Jan	SWISS
14 Dec - 08 Jan	Spirit Airlines
13 Dec - 08 Jan	Spirit Airlines
28 Dec - 10 Jan	TAP

Also check the deals for one-way flights from Chicago 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.

Book a cheap hotel in Rome

Cheap car rent in Rome

Cheapest return flights from Chicago to Rome in December from 294€

Return flights