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

Return flights

28 Aug - 04 Sep	KLM
15 Aug - 29 Aug	KLM
21 Aug - 27 Aug	SWISS
22 Aug - 25 Aug	KLM
14 Aug - 20 Aug	SWISS
24 Aug - 02 Sep	Lufthansa
04 Aug - 08 Aug	KLM
30 Aug - 06 Sep	KLM
20 Aug - 23 Aug	Air France
09 Aug - 12 Aug	KLM
12 Aug - 16 Aug	KLM
11 Aug - 21 Aug	KLM
09 Aug - 17 Aug	KLM

Also check the deals for one-way flights from Billund to Lisbon 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.

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Cheapest return flights from Billund to Lisbon in August from 192€

Return flights