AirHint found the following cheapest return flights from Lisbon (LIS) to Ljubljana (LJU) in May 2026 (see full year).

Return flights

12 May - 16 May	Transavia France
21 May - 28 May	Transavia France
08 May - 10 May	KLM
30 May - 01 Jun	KLM
06 May - 13 May	Iberia
01 May - 05 May	Iberia
13 May - 17 May	Wizz Air Malta
31 May - 18 Jun	Vueling Airlines
15 May - 17 May	Ryanair
04 May - 06 May	KLM
01 May - 07 May	Brussels Airlines
31 May - 14 Jun	Vueling Airlines
01 May - 03 May	KLM

Also check the deals for one-way flights from Lisbon to Ljubljana in May.

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 Lisbon to Ljubljana in May from 198€

Return flights