Hello swisspass123
Welcome to the SBB Community.
If you plan to stay in Zermatt for the entire time, and you only need transfer tickets, we suggest a Saver Day Pass for the travel from Zurich (Airport) to Zermatt. On the way back, you could even purchase Supersaver tickets.
We do not recommend Supersaver tickets when arriving by air, however; these tickets become invalid if you miss the train indicated on the ticket in case of a delay with your flight or at the airport.
Kind regards,
Roland