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

Return flights

04 Dec - 16 Dec	Spirit Airlines
02 Dec - 09 Dec	Spirit Airlines
01 Dec - 08 Dec	Icelandair
12 Dec - 19 Dec	Spirit Airlines
02 Dec - 09 Dec	Air France	direct
04 Dec - 16 Dec	KLM	direct
04 Dec - 11 Dec	KLM	direct
28 Dec - 17 Jan	KLM
27 Dec - 17 Jan	Air France
16 Dec - 22 Dec	Delta	direct
09 Dec - 03 Jan	Spirit Airlines
22 Dec - 31 Dec	Spirit Airlines
25 Dec - 03 Jan	Spirit Airlines
13 Dec - 02 Jan	Spirit Airlines
23 Dec - 02 Jan	Frontier Airlines
20 Dec - 03 Jan	Icelandair
13 Dec - 02 Jan	Air France	direct
23 Dec - 02 Jan	Air France	direct
21 Dec - 30 Dec	Delta	direct
09 Dec - 03 Jan	Air France	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 $442

Return flights