AirHint found the following cheapest return flights from Newark (EWR) to Keflavik (KEF) in April 2026 (see full year).

Return flights

04 Apr - 11 Apr	Austrian Airlines
13 Apr - 27 Apr	Austrian Airlines
17 Apr - 26 Apr	Lufthansa
23 Apr - 07 May	British Airways
04 Apr - 11 Apr	Icelandair	direct
13 Apr - 27 Apr	Icelandair	direct
13 Apr - 20 Apr	Icelandair	direct
23 Apr - 30 Apr	Icelandair	direct
17 Apr - 26 Apr	Icelandair	direct
14 Apr - 19 Apr	Icelandair	direct
01 Apr - 08 Apr	Scandinavian Airlines
23 Apr - 07 May	Icelandair	direct

Also check the deals for one-way flights from Newark to Keflavik in April.

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 Newark to Keflavik in April from 342€

Return flights