Originally Posted by
LondonElite
You don't clear customs in ZRH since you are not leaving the airport. You will need to get to the E gates, which is slightly further away and served by a mini connector train. The time you have is fine, assuming your incoming flight is on time. More than 45 minutes late and I'd start to worry.
If there are checked bags and AirBaltic won't interline, then the OP will have to clear customs as Switzerland is not in the EU
However BT codeshares with EY so they should be able to interline