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

Return flights

01 Oct - 07 Oct	Wizz Air
03 Oct - 05 Oct	Wizz Air
02 Oct - 09 Oct	Fly Play	direct
02 Oct - 12 Oct	Fly Play	direct
01 Oct - 08 Oct	Wizz Air
05 Oct - 12 Oct	Fly Play	direct
05 Oct - 09 Oct	Fly Play	direct
19 Oct - 27 Oct	Fly Play
16 Oct - 19 Oct	Fly Play
15 Oct - 18 Oct	Wizz Air
31 Oct - 07 Nov	KLM
09 Oct - 04 Nov	Scandinavian Airlines

Also check the deals for one-way flights from Billund 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 Billund to Keflavik in October from $169

Return flights