I would go by train. Trains in Europe run on time and are efficient. There are also plenty of buses. They too are good.
From Riva take a bus to Mori. From Mori take train Verona and change train to Venice.
The airport code for Verona Airport is VRN.
Verona Villafranca Airport.
Verona has one airport. It is called Verona Airport. However, nearby is the Brescia/Montichiari Airport and the Vicenza Airport.
120 kilometres taking A4 VENEZIA (Venice).
The airport code for Venice Municipal Airport is VNC.
Venice Marco Polo Airport.
In the city of Verona, in northeastern Italy, not far from Venice.
The airport code for Venice Marco Polo Airport is VCE.
Closest large airport is Milan Malpensa - small airport would be Verona.
Yes, they are from Verona. Verona is a city in Northern Italy, not too far from Venice.
Valerio Catullo Airport (VRN)
Venice Treviso Airport.