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

Return flights

18 Sep - 15 Oct	Lufthansa
13 Sep - 20 Sep	TAP
20 Sep - 30 Sep	TAP
20 Sep - 28 Sep	TAP
19 Sep - 29 Sep	TAP
13 Sep - 21 Sep	TAP
22 Sep - 28 Sep	TAP
22 Sep - 27 Sep	TAP
15 Sep - 21 Sep	TAP
22 Sep - 29 Sep	TAP
15 Sep - 28 Sep	TAP
10 Sep - 12 Oct	Lufthansa
16 Sep - 05 Oct	Lufthansa
25 Sep - 02 Oct	United
23 Sep - 02 Oct	Lufthansa
24 Sep - 10 Oct	SWISS
30 Sep - 07 Oct	Ryanair
22 Sep - 06 Oct	SWISS
29 Sep - 12 Oct	SWISS
24 Sep - 01 Oct	British Airways

Also check the deals for one-way flights from Naples to Newark 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 Naples to Newark in September from $366

Return flights