The Bernina Express runs from Chur to Tirano. From St. Moritz, you can take the direct local train which does not require reservations. You can just board if you have a rail pass such as the Swiss Travel Pass. If you don't have a pass, you need to buy a point to point ticket.
The bus from Tirano to Lugano can be booked through the link under "More on other websites" here. Booking is not open yet as far as I can see. The bus schedule of 2015 starts on March 28.
All you need to know about traveling by train, bus or car in Switzerland.
Hand picked Swiss hotels and other accommodations are right here.
Who's MySwissAlps.com?We're passionate tourists and locals. We share tips about planning a trip to Switzerland since 2002.More about usNewsletter signup