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

Return flights

29 Dec - 14 Jan	SWISS
28 Dec - 09 Jan	Sun Country Airlines
29 Dec - 08 Jan	TAP
27 Dec - 10 Jan	Frontier Airlines
25 Dec - 08 Jan	Frontier Airlines
24 Dec - 07 Jan	Frontier Airlines
26 Dec - 07 Jan	Frontier Airlines
22 Dec - 08 Jan	Frontier Airlines
27 Dec - 07 Jan	Frontier Airlines
31 Dec - 06 Jan	TAP
26 Dec - 31 Dec	Scandinavian Airlines
22 Dec - 29 Dec	Frontier Airlines
20 Dec - 27 Dec	Frontier Airlines
21 Dec - 28 Dec	Frontier Airlines
20 Dec - 29 Dec	Frontier Airlines
18 Dec - 30 Dec	Alaska Airlines
21 Dec - 30 Dec	Frontier Airlines

Also check the deals for one-way flights from San Francisco 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 San Francisco to Rome in December from 528€

Return flights