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

Return flights

02 Dec - 09 Dec	Spirit Airlines
05 Dec - 07 Dec	Spirit Airlines
04 Dec - 06 Dec	Spirit Airlines
06 Dec - 13 Dec	Icelandair
08 Dec - 15 Dec	Icelandair
02 Dec - 09 Dec	Air France	direct
13 Dec - 04 Jan	Spirit Airlines
24 Dec - 17 Jan	Spirit Airlines
27 Dec - 17 Jan	Icelandair
09 Dec - 03 Jan	Spirit Airlines
16 Dec - 22 Dec	Delta
13 Dec - 03 Jan	Spirit Airlines
12 Dec - 03 Jan	Spirit Airlines
16 Dec - 07 Jan	Delta
25 Dec - 03 Jan	Frontier Airlines
20 Dec - 03 Jan	Icelandair
21 Dec - 30 Dec	Delta	direct
30 Dec - 03 Jan	Lufthansa
04 Dec - 06 Dec	KLM	direct

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

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Cheapest return flights from Detroit to Rome in December from 438€

Return flights