<i>Or maybe you could stay in Luzern? It only takes about an hour and 20 minutes to go from Zurich Flughafen to Luzern by train.
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But without some type of rail pass, the cost of train travel should be added to the cost of the stay. What we paid last summer:

"We paid 25 CHF from Milan to Zurich, but 23 CHF from Zurich to Luzern and 30 CHF from Luzern to Winterthur."