Switzerland's train network is justly famous, but it stops at valleys. The village higher up, the Alpine pass, the ski resort above the treeline — these belong to PostAuto, the Swiss PostBus. Operating some 900 routes across the country, the yellow buses are as much a part of Swiss transport culture as the red trains, and between them the two modes cover almost every inhabited corner of the country.
What PostAuto is and how it works
PostAuto AG (PostBus Switzerland) is the bus division of Swiss Post. It operates the country's rural and mountain bus network under concession from the federal government, meaning the service is guaranteed even on routes that would be commercially unviable. The buses are bright yellow — a Swiss icon — and run on timetables that are coordinated with rail connections to the minute.
Routes range from short village shuttles to dramatic Alpine crossings. Some of the famous PostBus journeys include:
- The Klausenpass route through Uri and Glarus
- The Julier Pass service between Chur and Silvaplana, running above 2,200 metres
- Connections into the Bernese Oberland above Interlaken, including routes toward Grindelwald, Lauterbrunnen and Mürren's connecting lifts
- The Engadin valley services linking St Moritz to Pontresina, Maloja and Zernez
- Passes in the Valais, including approaches to Saas-Fee (car-free) and Zermatt (car-free)
Alpine pass routes are typically seasonal — mountain passes close in winter, and the bus stops running until snow clearance in spring. Check the current timetable before planning a pass crossing.
Fares, passes and the Swiss Travel Pass
PostAuto fares are integrated into the Swiss ticketing system. A point-to-point ticket can be bought at the bus stop (where there is a machine), via the SBB (Swiss Federal Railways) app, or at train station windows. The same app that books a train ticket books the bus.
More importantly for visitors, the Swiss Travel Pass covers PostAuto buses at no extra charge, as they are part of the national public transport network. If you hold a Swiss Travel Pass, you board a PostBus exactly as you would board a train — no separate ticket needed. The same applies to rail passes that include Swiss coverage.
Some panoramic and mountain routes carry a supplement — the "Panorama Express" branding on a few tourist routes means an extra fee is payable even with a pass. Check the timetable entry, which notes surcharges explicitly.
Timetable precision and connections
Swiss public transport is famous for its timed connections. A PostBus arrival from an upland village will typically be timed to reach the valley train station with three to five minutes to spare before the train departs — and the train waits if the bus is slightly late. This integration is not accidental; it is built into the national timetable planning process.
The consequence is that you can plan a complex journey — train to a valley town, PostBus over a pass, another bus down the other side, train home — using a single planner and reasonably expect it to work as written. The SBB website and app handle this integrated planning well.
Note on pass closures: high Alpine pass routes are suspended in winter, typically from October or November through May or June depending on snowfall. Some passes can also close temporarily in summer during severe weather. Always confirm the current running status before building an itinerary around a pass crossing.
Scenic PostBus routes worth planning around
Several PostBus routes have become attractions in their own right. The Grosse Scheidegg route from Grindelwald is one — the road is closed to private cars, so the bus is the only mechanised way over the pass. The Furkapass connection, before the rail tunnel takes over for winter, runs through some of the highest PostBus country in Switzerland.
The bus journey over the San Bernardino Pass (on the A13 corridor) is spectacular even though the tunnel below now carries most traffic — the old road and the PostBus route follow the historic pass rather than the tunnel.
For travellers practising slow travel, stringing PostBus routes together across multiple passes over several days is a legitimate way to cross Switzerland at ground level, seeing landscapes that neither rail nor motorway reveals. The environmental comparison between modes is also worth reading if that framing matters to you.
Luggage and practical details
PostBus coaches have luggage bays, though space is more limited than on a full-size intercity coach. Large suitcases on busy tourist routes in summer can be a problem; travelling light — rucksack or smaller bag — is more practical. On some mountain routes the bus genuinely cannot accommodate bulky ski bags outside of dedicated services.
Pushchairs and bicycles require advance notice and are not always possible on mountain routes. Dogs are allowed with a half-price ticket and must be on a lead. Timetables note which specific buses carry bicycles.
Long-distance coaches beyond PostBus
Switzerland is also connected to European long-distance coach networks. FlixBus operates routes linking Swiss cities — Zurich, Geneva, Basel, Bern — to destinations across France, Germany, Austria and Italy. These operate quite differently from PostAuto: they are booked online well in advance, depart from specific coach stops rather than integrated with train stations, and compete primarily on price for cross-border journeys.
For cross-border mountain routes from Switzerland, international PostBus services also connect some Swiss towns to Austrian and Italian neighbours — the corridor from Graubünden into northern Italy being one example.
Frequently asked questions
Is PostBus included in the Swiss Travel Pass?
Yes. PostAuto buses are part of the integrated Swiss public transport network and are fully covered by the Swiss Travel Pass. You board with the pass and no separate ticket is needed, unless the specific route carries a panoramic supplement — which is noted in the timetable.
How do I find PostBus timetables?
The SBB (Swiss Federal Railways) app and website plan integrated journeys including PostBus routes. Enter your origin and destination and the planner will combine trains and buses automatically. The PostAuto website also has its own route search.
Do PostBus routes run year-round?
Valley and lower-altitude routes run year-round. Alpine pass routes are seasonal and close when the pass closes for winter, typically October or November until May or June depending on the specific pass and that year's snowfall.
Can I take a PostBus with a large suitcase or ski equipment?
Luggage bays exist but are limited. Ski and board bags are permitted on dedicated routes and services, but must be booked in advance. For standard mountain routes, compact bags are more practical.