Cheapest return flights from Sofia to Keflavik in August from 335€

Best time to book flights for Sofia (SOF) to Keflavik (KEF) flights at AirHint

AirHint found the following cheapest return flights from Sofia (SOF) to Keflavik (KEF) in August 2025 (see full year).

Return flights

25 Aug - 31 Aug Lufthansa

Also check the deals for one-way flights from Sofia to Keflavik in August.

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