Cheapest return flights from St. Louis to Rome in December from 425€

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

Return flights

08 Dec - 24 Dec Lufthansa
04 Dec - 11 Dec Spirit Airlines
02 Dec - 09 Dec Air Canada
13 Dec - 08 Jan Frontier Airlines
03 Dec - 27 Dec KLM
15 Dec - 08 Jan Frontier Airlines
13 Dec - 07 Jan Frontier Airlines
14 Dec - 07 Jan Frontier Airlines

Also check the deals for one-way flights from St. Louis to Rome in December.

Powered by

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

Feel free to contact us with any feedback or request another flight research.