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

Return flights

10 Dec - 14 Dec	Wizz Air UK
09 Dec - 12 Dec	Wizz Air UK
13 Dec - 18 Dec	Wizz Air UK
04 Dec - 09 Dec	Wizz Air UK
12 Dec - 17 Dec	Wizz Air UK
09 Dec - 15 Dec	Wizz Air UK
12 Dec - 18 Dec	Wizz Air UK
12 Dec - 14 Dec	Wizz Air UK
08 Dec - 11 Dec	Wizz Air UK
18 Dec - 21 Dec	easyJet
31 Dec - 07 Jan	Wizz Air
19 Dec - 05 Jan	Ryanair
31 Dec - 05 Jan	Wizz Air Malta
19 Dec - 11 Jan	easyJet
31 Dec - 04 Jan	Wizz Air Malta
30 Dec - 06 Jan	Wizz Air
30 Dec - 04 Jan	Wizz Air UK
26 Dec - 04 Jan	Wizz Air UK
30 Dec - 01 Jan	easyJet
31 Dec - 03 Jan	Wizz Air

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 $239

Return flights