Como Nord Lago <–> Milan Central Station
Como Nord Lago <–> Malpensa airport (change train in Saronno)
To reach the Como Nord Lago train station from Bellagio you can use the public bus (C30 Line), taxis, NCC, public boats or hydrofoils (The train station is about 10 minutes by walking from the public pier)
From Como you can easily reach the Malpensa airport