Published on Brock University (http://www.brocku.ca)
Lester B. Pearson Airport in Toronto, Ontario, is the closest Canadian airport to St. Catharines. It is 120 kilometers away and takes approximately one and a half hours to travel. Transportation from the airport to St. Catharines may include either a shuttle or a taxi.
Niagara Airbus is a bus service that offers transportation from Toronto airport to St. Catharines. You will need to book more than 24 hours ahead and the price is around $100. For more information on booking and prices, please go to: http://www.niagaraairbus.com/
If you do not have a reservation with Niagara Airbus, you may also take a taxi from the Toronto airport to St. Catharines; taxis are availble just outside the airport, and the cost is approximately $150-180.
For other taxi cab companies that provide transportation from Toronto airport to St. Catharines and Niagara, please go to: http://www.torontopearson.com/en/toandfrom/ground/#
There are many other private services for transportation to Brock. Be careful to check the providers' background and liability insurance before using their service.