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

Return flights

29 Aug - 19 Sep	Ryanair
31 Aug - 15 Sep	Lufthansa
04 Aug - 08 Aug	Ryanair
22 Aug - 01 Sep	SWISS
08 Aug - 12 Aug	Lufthansa
07 Aug - 11 Aug	Ryanair
09 Aug - 12 Aug	Ryanair
11 Aug - 15 Aug	Ryanair
18 Aug - 25 Aug	SWISS
08 Aug - 11 Aug	Lufthansa
08 Aug - 15 Aug	Lufthansa
14 Aug - 21 Aug	Austrian Airlines
29 Aug - 19 Sep	Luxair	direct
08 Aug - 01 Sep	Austrian Airlines
14 Aug - 18 Aug	Ryanair
22 Aug - 01 Sep	Luxair	direct

Also check the deals for one-way flights from Luxemburg to Bucharest 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 Luxemburg to Bucharest in August from 164€

Return flights