AirHint found the following cheapest return flights from Charleroi (CRL) to Keflavik (KEF) in October 2025 (see full year).

Return flights

11 Oct - 23 Oct	Ryanair
18 Oct - 26 Oct	Ryanair
04 Oct - 11 Oct	Ryanair
03 Oct - 08 Oct	Ryanair
11 Oct - 16 Oct	Ryanair
19 Oct - 26 Oct	Ryanair
23 Oct - 26 Oct	Wizz Air
24 Oct - 06 Nov	Ryanair
07 Oct - 14 Oct	Wizz Air
02 Oct - 08 Oct	Wizz Air
02 Oct - 11 Oct	Wizz Air
25 Oct - 01 Nov	Ryanair
26 Oct - 01 Nov	Wizz Air
17 Oct - 01 Nov	Wizz Air
18 Oct - 02 Nov	Ryanair

Also check the deals for one-way flights from Charleroi to Keflavik in October.

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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Cheapest return flights from Charleroi to Keflavik in October from $211

Return flights