Cheapest one-way flights from Athens to Keflavik in September from $140

Best time to book flights for Athens (ATH) to Keflavik (KEF) flights at AirHint

AirHint found the following cheapest one-way flights from Athens (ATH) to Keflavik (KEF) in September 2025 (see full year).

One-Way flights

11 Sep Scandinavian Airlines
04 Sep Scandinavian Airlines
30 Sep Ryanair
13 Sep Ryanair
01 Sep Wizz Air Malta
24 Sep Ryanair
20 Sep Scandinavian Airlines
09 Sep transavia
12 Sep Aegean Airlines
20 Sep Fly Play direct

Also check the deals for return flights from Athens to Keflavik in September.

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