NEED TO FLY FURTHER AFIELD?
Alsie Express has a complete Interline agreement with SAS. This means that you only need one ticket and you can book the entire trip from Sønderborg to your final destination via the SAS website. So you only need to check-in your luggage once.
There are, of course, many other airlines flying from Copenhagen, but if you want to use the Interline agreement between Alsie and SAS, you can book tickets here.