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

Return flights

16 May - 23 May	Air Serbia
07 May - 14 May	Lufthansa
16 May - 24 May	Air Serbia
31 May - 06 Jun	Air Serbia
07 May - 11 May	Lufthansa
23 May - 31 May	Air Serbia
05 May - 09 May	Lufthansa
02 May - 10 May	Air Serbia
03 May - 10 May	Air Serbia
30 May - 05 Jun	Air Serbia
04 May - 09 May	Lufthansa
05 May - 13 May	Lufthansa
29 May - 04 Jun	SWISS
29 May - 05 Jun	SWISS
28 May - 10 Jun	Lufthansa
30 May - 05 Jun	British Airways	direct
27 May - 03 Jun	Lufthansa
26 May - 03 Jun	Lufthansa
31 May - 06 Jun	British Airways	direct
29 May - 05 Jun	British Airways	direct

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

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 May from 177€

Return flights