hi there,
At the moment, North America is the only country with intercontinental flights to Norway. So what you need to do is travel to cities like London, Berlin or Copenhagen to get a connecting flight.
Another thing you could do is get an open-jaw ticket, which allows you to fly into one city in
Norway and leave from another at no extra cost.
You could fly into
Ålesund and fly out from Bergen, Oslo or a number of other cities in Norway or elsewhere in Scandinavia.