AirHint found the following cheapest return flights from London (LHR) to Ljubljana (LJU) in August 2025 (see full year).

Return flights

27 Aug - 11 Sep	Lufthansa
27 Aug - 04 Sep	Lufthansa
28 Aug - 11 Sep	Lufthansa
26 Aug - 05 Sep	Brussels Airlines
26 Aug - 04 Sep	Brussels Airlines
25 Aug - 05 Sep	Brussels Airlines
29 Aug - 04 Sep	Brussels Airlines
26 Aug - 02 Sep	Brussels Airlines
29 Aug - 02 Sep	Brussels Airlines
28 Aug - 02 Sep	SWISS
02 Aug - 07 Aug	Lufthansa
13 Aug - 20 Aug	SWISS
11 Aug - 18 Aug	SWISS
11 Aug - 20 Aug	SWISS
04 Aug - 18 Aug	Lufthansa
26 Aug - 27 Aug	Brussels Airlines
06 Aug - 12 Aug	Brussels Airlines
13 Aug - 27 Aug	SWISS
20 Aug - 27 Aug	SWISS
07 Aug - 13 Aug	Lufthansa

Also check the deals for one-way flights from London to Ljubljana 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 London to Ljubljana in August from 189€

Return flights