AirHint found the following cheapest return flights from Athens (ATH) to Keflavik (KEF) in May 2026 (see full year).

Return flights

06 May - 13 May	easyJet
05 May - 13 May	easyJet
04 May - 13 May	easyJet
13 May - 21 May	easyJet
20 May - 28 May	easyJet
11 May - 21 May	easyJet
23 May - 28 May	easyJet
04 May - 09 May	Scandinavian Airlines
13 May - 20 May	easyJet
11 May - 16 May	easyJet
25 May - 02 Jun	Scandinavian Airlines
25 May - 01 Jun	easyJet

Also check the deals for one-way flights from Athens to Keflavik in May.

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

Cheapest return flights from Athens to Keflavik in May from 175€

Return flights