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

Return flights

07 Sep - 17 Sep	Condor
08 Sep - 17 Sep	Condor
24 Sep - 30 Sep	Condor
08 Sep - 15 Sep	TAP
01 Sep - 15 Sep	TAP
10 Sep - 23 Sep	British Airways
03 Sep - 24 Sep	British Airways
30 Sep - 07 Oct	Iberia
30 Sep - 14 Oct	Iberia
14 Sep - 22 Sep	Condor
02 Sep - 25 Sep	Condor
10 Sep - 01 Oct	TAP
21 Sep - 03 Oct	British Airways
07 Sep - 13 Sep	Frontier Airlines
28 Sep - 14 Oct	Frontier Airlines
24 Sep - 09 Oct	Condor
27 Sep - 04 Oct	Frontier Airlines
21 Sep - 05 Oct	Frontier Airlines
23 Sep - 05 Oct	Hawaiian Airlines
20 Sep - 21 Oct	Delta

Also check the deals for one-way flights from San Francisco to Rome in September.

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 San Francisco to Rome in September from 411€

Return flights