I'm planning on flying in from either Buffalo NY, New York NY, or Toronto Canada. Of the mentioned airports (Gothenburg Landvetter (GOT), Stockholm Arlanda (ARN), Copenhagen Kastrup (CPH) and possibly Stockholm Skavsta (NYO) ) which of these would provide the most direct route to the event afterward?

As tdawg mentioned above, would flying into Gothenburg and then taking a train be the most direct path to the event?