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

Return flights

28 Sep - 08 Oct	Lufthansa
29 Sep - 06 Oct	Lufthansa
28 Sep - 09 Oct	Aer Lingus
23 Sep - 01 Oct	Aer Lingus
16 Sep - 01 Oct	SWISS
26 Sep - 28 Sep	Frontier Airlines
21 Sep - 26 Sep	Frontier Airlines
26 Sep - 06 Oct	Frontier Airlines
24 Sep - 29 Sep	Alaska Airlines
20 Sep - 11 Oct	FrenchBee
11 Sep - 24 Sep	FrenchBee
13 Sep - 20 Sep	FrenchBee
11 Sep - 04 Oct	FrenchBee
13 Sep - 04 Oct	FrenchBee
23 Sep - 29 Sep	Frontier Airlines
11 Sep - 21 Sep	FrenchBee
19 Sep - 23 Sep	Frontier Airlines
17 Sep - 23 Sep	Frontier Airlines
15 Sep - 25 Sep	FrenchBee
27 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 486€

Return flights