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

Return flights

06 Dec - 08 Dec	Wizz Air UK
07 Dec - 09 Dec	Wizz Air UK
03 Dec - 08 Dec	Wizz Air UK
03 Dec - 07 Dec	Wizz Air UK
15 Dec - 21 Dec	easyJet
05 Dec - 07 Dec	Wizz Air UK
12 Dec - 15 Dec	Wizz Air UK
27 Dec - 31 Dec	Wizz Air
30 Dec - 01 Jan	easyJet
20 Dec - 28 Dec	easyJet
19 Dec - 21 Dec	Wizz Air UK
28 Dec - 01 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 215€

Return flights