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

Return flights

10 Sep - 17 Sep	Wizz Air UK
18 Sep - 24 Sep	easyJet
20 Sep - 24 Sep	easyJet
19 Sep - 24 Sep	Wizz Air
13 Sep - 17 Sep	Wizz Air UK
17 Sep - 19 Sep	Wizz Air UK
11 Sep - 17 Sep	Wizz Air
01 Sep - 04 Sep	Wizz Air UK
10 Sep - 12 Sep	Wizz Air UK
08 Sep - 12 Sep	Wizz Air UK
26 Sep - 01 Oct	Wizz Air
19 Sep - 07 Oct	Wizz Air UK
26 Sep - 02 Oct	Wizz Air
26 Sep - 05 Oct	Wizz Air
25 Sep - 02 Oct	easyJet
25 Sep - 03 Oct	easyJet
27 Sep - 02 Oct	Wizz Air UK
27 Sep - 05 Oct	Ryanair
27 Sep - 01 Oct	Ryanair
30 Sep - 03 Oct	Wizz Air

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

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 September from $262

Return flights