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

Return flights

31 Aug - 02 Sep	Vueling Airlines
27 Aug - 02 Sep	KLM
20 Aug - 10 Sep	KLM
20 Aug - 26 Aug	KLM
20 Aug - 13 Sep	KLM
20 Aug - 11 Sep	KLM
30 Aug - 09 Sep	TAP
26 Aug - 28 Aug	Vueling Airlines
30 Aug - 03 Sep	TAP
28 Aug - 09 Sep	KLM
28 Aug - 13 Sep	KLM
26 Aug - 30 Aug	Vueling Airlines
12 Aug - 19 Aug	easyJet
29 Aug - 06 Sep	TAP
20 Aug - 23 Aug	KLM
21 Aug - 25 Aug	KLM
24 Aug - 27 Aug	KLM
27 Aug - 31 Aug	KLM
27 Aug - 30 Aug	KLM
26 Aug - 29 Aug	Vueling Airlines

Also check the deals for one-way flights from Lisbon to Luxemburg 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 Lisbon to Luxemburg in August from 189€

Return flights