The frequency of the Bernina Express in 2026 depends on the season, as it is primarily a tourist-oriented panoramic train. During the Summer Season (May to October), there are typically two to four daily departures in each direction between Chur/St. Moritz and Tirano, Italy. In the Winter Season, the frequency is reduced to one or two daily departures. It is important to distinguish between the official "Bernina Express" (the red trains with the massive panoramic windows that require a reservation) and the local regional trains that run on the exact same tracks. The regional trains run every hour, every day, all year round. While the regional trains don't have the "tilting" panoramic windows or the onboard commentary, they are often preferred by savvy travelers because they are covered by the Swiss Travel Pass without a reservation fee and you can actually open the windows to take better photographs of the Landwasser Viaduct and the Alp Grüm views. If you are set on the official "Express" experience, you must book your seat at least several weeks in advance during the summer months.