They have a summer fleet at the minute of around 50? Aircraft?
How many aircraft fly during a normal day in January/February?
At least 30 I would say so as long as they are making 1 daily flight then it's making some money.
You may find that the paid aircraft sit locked up for the winter and they only use the new lease ones.
I'm guessing there will be slightly more winter flying but not much.
They can't do other business routes as they can't carry them on in the summer time unless this changes ?
They may lease the aircraft out in winter to other tour operators