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

Return flights

10 Sep - 16 Sep	Air Canada
01 Sep - 11 Sep	Air Canada
03 Sep - 12 Sep	Air Canada
03 Sep - 10 Sep	United
09 Sep - 16 Sep	United
02 Sep - 09 Sep	United
08 Sep - 15 Sep	Austrian Airlines
17 Sep - 24 Sep	United
30 Sep - 07 Oct	United
24 Sep - 01 Oct	United
05 Sep - 12 Sep	United
11 Sep - 18 Sep	United
27 Sep - 04 Oct	United
25 Sep - 04 Oct	United

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 497€

Return flights