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

Return flights

13 Dec - 16 Dec	Wizz Air UK
04 Dec - 08 Dec	Wizz Air UK
05 Dec - 08 Dec	Wizz Air UK
03 Dec - 07 Dec	Wizz Air UK
24 Dec - 02 Jan	Wizz Air UK
18 Dec - 22 Dec	easyJet
11 Dec - 13 Dec	easyJet
19 Dec - 26 Dec	Ryanair
17 Dec - 21 Dec	easyJet
19 Dec - 23 Dec	Ryanair
29 Dec - 03 Jan	Wizz Air UK
11 Dec - 14 Dec	easyJet
29 Dec - 02 Jan	Wizz Air UK
26 Dec - 03 Jan	Wizz Air UK
30 Dec - 03 Jan	easyJet
30 Dec - 02 Jan	easyJet

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

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 December from 216€

Return flights