AirHint found the following cheapest return flights from Denver (DEN) to Rome (FCO) in January 2026 (see full year).

Return flights

19 Jan - 02 Feb	Frontier Airlines
22 Jan - 29 Jan	Frontier Airlines
08 Jan - 22 Jan	Frontier Airlines
23 Jan - 30 Jan	Icelandair
09 Jan - 23 Jan	Frontier Airlines
20 Jan - 27 Jan	Scandinavian Airlines
08 Jan - 21 Jan	Turkish Airlines
19 Jan - 23 Jan	Frontier Airlines
16 Jan - 19 Jan	Turkish Airlines
01 Jan - 04 Jan	Frontier Airlines

Also check the deals for one-way flights from Denver to Rome in January.

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 Denver to Rome in January from 517€

Return flights