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

Return flights

31 Jul - 09 Aug	Wizz Air Malta
22 Jul - 25 Jul	Ryanair
30 Jul - 08 Aug	Ryanair
30 Jul - 05 Aug	Ryanair
12 Jul - 19 Jul	SWISS
24 Jul - 31 Jul	Ryanair
08 Jul - 25 Jul	Wizz Air Malta
12 Jul - 20 Jul	SWISS
08 Jul - 15 Jul	Wizz Air Malta
09 Jul - 23 Jul	Ryanair
14 Jul - 20 Jul	SWISS
25 Jul - 27 Jul	Ryanair
05 Jul - 12 Jul	SWISS
29 Jul - 05 Aug	Ryanair
26 Jul - 03 Aug	Ryanair
20 Jul - 03 Aug	Vueling Airlines

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

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 July from $252

Return flights