Cheapest return flights from Newark to Keflavik in June from $432

Best time to book flights for Newark (EWR) to Keflavik (KEF) flights at AirHint

AirHint found the following cheapest return flights from Newark (EWR) to Keflavik (KEF) in June 2025 (see full year).

Return flights

09 Jun - 14 Jun Spirit Airlines
02 Jun - 10 Jun Air France
02 Jun - 08 Jun Air France
16 Jun - 24 Jun Air France
04 Jun - 11 Jun KLM
23 Jun - 01 Jul KLM
24 Jun - 02 Jul KLM
05 Jun - 13 Jun KLM
24 Jun - 01 Jul Air France
03 Jun - 06 Jun Spirit Airlines
06 Jun - 16 Jun Delta
04 Jun - 08 Jun KLM
06 Jun - 08 Jun KLM
24 Jun - 02 Jul Icelandair direct
16 Jun - 01 Jul Icelandair direct
29 Jun - 11 Jul SWISS
24 Jun - 03 Jul Icelandair direct
25 Jun - 01 Jul Icelandair direct
24 Jun - 01 Jul Icelandair direct
30 Jun - 11 Jul Spirit Airlines

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

Skyscanner

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.

Book a cheap hotel in Keflavik

Cheap car rent in Keflavik