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

Return flights

31 Jul - 10 Aug	Fly Play	direct
31 Jul - 07 Aug	Fly Play	direct
02 Jul - 15 Jul	Wizz Air
24 Jul - 28 Jul	Fly Play	direct
21 Jul - 28 Jul	Fly Play	direct
07 Jul - 14 Jul	Fly Play	direct
24 Jul - 03 Aug	Fly Play	direct
07 Jul - 15 Jul	Wizz Air
21 Jul - 05 Aug	Wizz Air
02 Jul - 14 Jul	Wizz Air
24 Jul - 27 Jul	Fly Play	direct
27 Jul - 03 Aug	Fly Play	direct
01 Jul - 14 Jul	Lufthansa
02 Jul - 16 Jul	Wizz Air
09 Jul - 16 Jul	Wizz Air
27 Jul - 01 Aug	Scandinavian Airlines

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

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 July from $277

Return flights