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

Return flights

19 Sep - 11 Oct	Scandinavian Airlines
22 Sep - 02 Oct	Frontier Airlines
10 Sep - 17 Sep	Delta
25 Sep - 04 Oct	jetBlue
29 Sep - 06 Oct	Air Canada
09 Sep - 16 Sep	Spirit Airlines
10 Sep - 27 Sep	United
12 Sep - 20 Sep	Frontier Airlines
17 Sep - 20 Sep	Spirit Airlines
19 Sep - 01 Oct	Air Canada
27 Sep - 11 Oct	jetBlue
12 Sep - 04 Oct	Air Canada
25 Sep - 02 Oct	Air France
27 Sep - 04 Oct	Air France
08 Sep - 15 Sep	Alaska Airlines
10 Sep - 14 Sep	jetBlue

Also check the deals for one-way flights from San Diego 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 Diego to Paris in September from $665

Return flights