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

Return flights

10 Dec - 17 Dec	United
08 Dec - 08 Jan	Air Canada
08 Dec - 07 Jan	Air Canada
08 Dec - 06 Jan	Air Canada
07 Dec - 06 Jan	Air Canada
09 Dec - 06 Jan	Air Canada
10 Dec - 06 Jan	Iberia
28 Dec - 05 Jan	Air Canada
30 Dec - 06 Jan	United
25 Dec - 02 Jan	Air Canada
20 Dec - 27 Dec	United

Also check the deals for one-way flights from Las Vegas 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 Las Vegas to Rome in December from $605

Return flights