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

Return flights

18 Aug - 21 Aug	Fly Play	direct
28 Aug - 07 Sep	Fly Play	direct
17 Aug - 24 Aug	Fly Play	direct
14 Aug - 18 Aug	Fly Play	direct
20 Aug - 16 Sep	Icelandair
27 Aug - 31 Aug	Wizz Air
10 Aug - 17 Aug	Fly Play	direct
07 Aug - 14 Aug	Fly Play	direct
13 Aug - 20 Aug	Wizz Air
07 Aug - 10 Aug	Fly Play	direct
15 Aug - 24 Aug	Icelandair	direct
13 Aug - 20 Aug	Icelandair	direct

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

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

Cheapest return flights from Billund to Keflavik in August from 205€

Return flights