Ryanair
Daza
The booking engine can be manipulated to get Madrid up as well FR2082 four times a week but all sold out. I wonder if this is another flight about to be announced. I believe the flight number was Madrid - Ibiza this summer.
Verona should be a good one for summer and I would be happy for them to keep away from Bergamo as flybe are doing very nicely but in summer I suppose you could say two different markets although flybe do carry block-bookings. Fares were light at times on the BGY but Monty Gordo was right it was packed at times.
Rotterdam is a strange one in as much as the start date and I too fear it might not see the light of day.
Pete