AirHint found the following cheapest return flights from London (LHR) to Ljubljana (LJU) in January 2026 (see full year).

Return flights

14 Jan - 18 Jan	Vueling Airlines
16 Jan - 21 Jan	Lufthansa
22 Jan - 25 Jan	Lufthansa
22 Jan - 26 Jan	Lufthansa
29 Jan - 01 Feb	Lufthansa
16 Jan - 18 Jan	Lufthansa
20 Jan - 27 Jan	Lufthansa
16 Jan - 19 Jan	Lufthansa
31 Jan - 11 Feb	Lufthansa
29 Jan - 03 Feb	Lufthansa
30 Jan - 01 Feb	Lufthansa
23 Jan - 25 Jan	Lufthansa
23 Jan - 26 Jan	Lufthansa
23 Jan - 30 Jan	Lufthansa
28 Jan - 01 Feb	SWISS
28 Jan - 02 Feb	Brussels Airlines
28 Jan - 04 Feb	Brussels Airlines
31 Jan - 01 Feb	Lufthansa
23 Jan - 04 Feb	Lufthansa
09 Jan - 04 Feb	SWISS

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

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 January from 158€

Return flights