Cheapest return flights from Lyon to Keflavik in September from $290

Best time to book flights for Lyon (LYS) to Keflavik (KEF) flights at AirHint

AirHint found the following cheapest return flights from Lyon (LYS) to Keflavik (KEF) in September 2025 (see full year).

Return flights

01 Sep - 07 Sep easyJet

Also check the deals for one-way flights from Lyon 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