After some googeling and wikepediaing,
"When a speaker wants to explicitly include Finland alongside Scandinavia-proper, the geographic terms Fenno-Scandinavia or Fennoscandia are sometimes used in English, although these terms are hardly if at all used within Scandinavia"
I want to drag your attention to "although these terms are hardly if at all used within Scandinavia".
In Norwegian Scandinavia may refer to all things. (unhelpfull Nor. source https://snl.no/Skandinavia
In the Norwegian version of wiki, it states that Finland and Iceland is somtimes viewd as part of Scandinavia.
I guess you all are more right then me, but only cus we are speaking english.
@Onoma "Finland isn't on the scandinavian peninsula, only Norway and Sweden are" But Finalnd is part of the scandinavian half-peninsula, which is what the term Scandinavia often refers too xD
Edited 1/4/2016 17:35:33