Cheapest one-way flights from Santander to Keflavik in September from $116

Best time to book flights for Santander (SDR) to Keflavik (KEF) flights at AirHint

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

One-Way flights

29 Sep Ryanair

Also check the deals for return flights from Santander 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.

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