Mark
Its a twin center of Belgium and Slovenia! Flying from Dublin on the 20th March to Brussels then off to Ljubljana the next day for 5 nights! Slovenia is considered the adventure capital of Eastern Europe and with Lake Bled only a short distance from the capital you can see why! The deal is based off combining Ryanair with Wizz Air. Below is the Ryanair option with you can book a number of dates through Ryanair.com depending on how long you want to spend in the Belgian Capital.
Below is Hungarian low cost carrier Wizz Air, who also have a number of dates through Easter for these cheap flights. This deal is ridiculously good value at less than 73EUR, as generally the cost to Lake Bled is usually double the cost of this trip.
***Please note that Brussels Airport(BRU) and Charleroi Airport(CRL) are two different airports***