For listing purposes, Scandinavia is divided up into six countries/regions: Denmark, Finland, Iceland, Norway, Sweden and the Arctic... except the Arctic is actually a list of companies travelling to both poles - Arctic & Antarctic.
Regardless of any official or political definitions, for me, some countries straddle regions. So sometimes you'll find them appearing in more than one menu. EG. Finland is in both the Baltic region and Scandinavia.
Use the menus on the left to navigate.