AirHint found the following cheapest return flights from London (LHR) to Ljubljana (LJU) in April 2026 (see full year).

Return flights

20 Apr - 26 Apr	British Airways	direct
15 Apr - 19 Apr	British Airways	direct
26 Apr - 30 Apr	British Airways	direct
18 Apr - 21 Apr	Lufthansa
17 Apr - 19 Apr	British Airways	direct
13 Apr - 17 Apr	Lufthansa
15 Apr - 20 Apr	Lufthansa
18 Apr - 23 Apr	Lufthansa
14 Apr - 18 Apr	Lufthansa
16 Apr - 20 Apr	Lufthansa
29 Apr - 02 May	Lufthansa
17 Apr - 03 May	British Airways	direct
29 Apr - 04 May	Lufthansa
30 Apr - 06 May	SWISS
30 Apr - 03 May	SWISS
30 Apr - 05 May	SWISS
30 Apr - 07 May	SWISS
30 Apr - 04 May	SWISS
27 Apr - 01 May	Lufthansa
27 Apr - 01 May	British Airways	direct

Also check the deals for one-way flights from London to Ljubljana in April.

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 April from 166€

Return flights