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

Return flights

30 Sep - 05 Oct	easyJet	direct
26 Sep - 30 Sep	easyJet	direct
25 Sep - 29 Sep	easyJet	direct
27 Sep - 30 Sep	Transavia France
26 Sep - 28 Sep	easyJet	direct
09 Sep - 16 Sep	easyJet	direct
09 Sep - 14 Sep	easyJet	direct
10 Sep - 14 Sep	easyJet	direct
11 Sep - 14 Sep	easyJet	direct
16 Sep - 21 Sep	SWISS
19 Sep - 27 Sep	SWISS
30 Sep - 06 Oct	SWISS
29 Sep - 04 Oct	SWISS

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

Book a cheap hotel in London

Cheap car rent in London

Cheapest return flights from Ljubljana to London in September from 104€

Return flights