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

Return flights

12 Mar - 26 Mar	British Airways
03 Mar - 10 Mar	Icelandair	direct
23 Mar - 30 Mar	Icelandair	direct
16 Mar - 22 Mar	Icelandair	direct
13 Mar - 20 Mar	Icelandair	direct
29 Mar - 04 Apr	Icelandair	direct
15 Mar - 30 Mar	British Airways

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

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 March from 391€

Return flights