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

Return flights

16 Sep - 23 Sep	United
14 Sep - 25 Sep	British Airways
08 Sep - 15 Sep	Air Canada
14 Sep - 21 Sep	Hawaiian Airlines
03 Sep - 10 Sep	United
02 Sep - 29 Sep	Delta
26 Sep - 03 Oct	United
01 Sep - 03 Sep	Frontier Airlines
06 Sep - 13 Sep	United
11 Sep - 18 Sep	United
21 Sep - 28 Sep	United

Also check the deals for one-way flights from San Diego to Naples 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.

Book a cheap hotel in Naples

Cheap car rent in Naples

Cheapest return flights from San Diego to Naples in September from $744

Return flights