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

Return flights

03 Sep - 09 Sep	United
02 Sep - 09 Sep	United
01 Sep - 12 Sep	KLM
03 Sep - 12 Sep	Delta
10 Sep - 25 Sep	Air France
17 Sep - 24 Sep	United
23 Sep - 30 Sep	United
23 Sep - 01 Oct	KLM
16 Sep - 01 Oct	Iberia
05 Sep - 12 Sep	United
11 Sep - 18 Sep	United
08 Sep - 15 Sep	United
26 Sep - 03 Oct	Air Canada
29 Sep - 06 Oct	United
25 Sep - 11 Oct	KLM

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 501€

Return flights