mentioning Sunair...Our Company used to have a base in Skive which is just north of Billund and we used to take the flight a few times a month as we had a contract and a warehouse over there supporting the telecom industry.
Flights I seem to remember at the time were around the 400 quid mark return!!!
They still are, £200 if you book well in advance.
It always seems to go out full too!