Hungarian low cost carrier Wizz Air offers low First Minute prices from UK (London Luton) to Slovenia (Ljubljana). Tickets from only 22.98 GBP round trip.
From November till January 2016.
How to book:
Go to Wizzair.com and choose the routing and dates from above.
Baggage during the trip:
One cabin bag per passenger with maximum dimensions of 42cm x 32cm x 25cm. To get the lowest rates you have to be a member of Wizz Discount Club (WDC).