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

Return flights

30 Sep - 28 Oct	Scandinavian Airlines
24 Sep - 09 Oct	Condor
28 Sep - 09 Oct	Condor
30 Sep - 14 Oct	Scandinavian Airlines
28 Sep - 08 Oct	Condor
21 Sep - 25 Sep	Condor
16 Sep - 01 Oct	Condor
29 Sep - 06 Oct	Condor
23 Sep - 03 Oct	Scandinavian Airlines
15 Sep - 25 Sep	Condor
23 Sep - 01 Oct	Aer Lingus
11 Sep - 24 Sep	Condor
21 Sep - 26 Sep	Frontier Airlines
15 Sep - 30 Sep	Condor
15 Sep - 22 Sep	Condor
18 Sep - 23 Sep	Condor
17 Sep - 23 Sep	Condor
19 Sep - 25 Sep	Frontier Airlines
20 Sep - 29 Sep	Hawaiian Airlines
26 Sep - 06 Oct	Frontier Airlines

Also check the deals for one-way flights from San Francisco to Paris 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 Paris in September from 448€

Return flights