AirHint found the following cheapest return flights from Naples (NAP) to Keflavik (KEF) in August 2025 (see full year).

Return flights

28 Aug - 07 Sep	ITA Airways
27 Aug - 29 Aug	Ryanair
29 Aug - 05 Sep	Ryanair
27 Aug - 03 Sep	Ryanair
01 Aug - 09 Aug	Ryanair
22 Aug - 28 Aug	Ryanair
26 Aug - 11 Sep	ITA Airways
31 Aug - 07 Sep	Ryanair
25 Aug - 28 Aug	Ryanair
28 Aug - 03 Sep	Ryanair
25 Aug - 02 Sep	Ryanair
21 Aug - 28 Aug	Ryanair
02 Aug - 08 Aug	Wizz Air Malta
22 Aug - 30 Aug	Ryanair
23 Aug - 28 Aug	SWISS
22 Aug - 27 Aug	Ryanair
31 Aug - 06 Sep	Ryanair
27 Aug - 31 Aug	Ryanair
18 Aug - 12 Sep	Ryanair
18 Aug - 01 Sep	Transavia France

Also check the deals for one-way flights from Naples to Keflavik in August.

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 Keflavik in August from $292

Return flights