Yes, buses are completely free with the Swiss Travel Pass in 2026 across almost the entire country. The pass covers the "Swiss Travel System," which includes not just trains but also the iconic yellow PostBuses that service remote mountain villages, as well as local city buses and trams in more than 90 towns and cities. Whether you are navigating the streets of Zurich or climbing the winding roads of the Alps, you simply show your digital pass to the driver or inspector. The only exceptions are specific "mountain excursions" (like the bus to certain private summits) where the pass might only provide a 50% discount rather than full coverage. For most 2026 travelers, the Swiss Travel Pass acts as an "all-access key," making it incredibly easy to switch between a lake boat, a panoramic train, and a local bus without ever reaching for your wallet.