Mar 16, 2018 - 2:42 PM
Hi Leeds & Lucas,
A lot depends on what is meant by "most direct route". Some routes are shorter in distance but take longer in time as well as costing different amounts for 'normal' tickets. For instance, we have travelled with Transfer Tickets many times between the Bernese Oberland and Zurich Airport and gone via Bern as well as via the Brunig line and Luzern. We've never had a problem.
Recently we used Saver Day Tickets which were both cheaper than Transfer Tickets and also gave full flexibility including diversions off our main route.