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

Return flights

07 Jul - 14 Jul	SWISS
31 Jul - 10 Aug	Fly Play	direct
14 Jul - 17 Jul	SWISS
31 Jul - 07 Aug	Lufthansa
31 Jul - 03 Aug	Fly Play	direct
21 Jul - 24 Jul	Wizz Air
17 Jul - 25 Jul	Lufthansa
11 Jul - 17 Jul	Wizz Air
14 Jul - 20 Jul	Wizz Air
31 Jul - 07 Aug	Fly Play	direct
14 Jul - 17 Jul	Fly Play	direct
06 Jul - 21 Jul	Lufthansa
06 Jul - 21 Jul	Fly Play	direct
14 Jul - 20 Jul	Fly Play	direct
24 Jul - 03 Aug	Fly Play	direct

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 242€

Return flights