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

Return flights

04 Dec - 08 Dec	Wizz Air UK
13 Dec - 16 Dec	Wizz Air UK
01 Dec - 07 Dec	Ryanair
07 Dec - 09 Dec	Wizz Air UK
09 Dec - 11 Dec	easyJet
06 Dec - 08 Dec	Wizz Air UK
05 Dec - 07 Dec	Wizz Air UK
19 Dec - 18 Jan	Ryanair
19 Dec - 11 Jan	Ryanair
05 Dec - 09 Dec	Wizz Air Malta
03 Dec - 07 Dec	Wizz Air UK
11 Dec - 14 Dec	Wizz Air UK
21 Dec - 18 Jan	easyJet
29 Dec - 04 Jan	Wizz Air UK
31 Dec - 04 Jan	easyJet
28 Dec - 01 Jan	easyJet
26 Dec - 01 Jan	Wizz Air UK
21 Dec - 04 Jan	easyJet
19 Dec - 17 Jan	Ryanair
28 Dec - 04 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 144€

Return flights