If you plan to drive to London from the USA you may choose to take the ferry from Sandusky, Ohio, to Leamington or Kingsville, Ontario, across Lake Erie rather than driving around Lake Erie. In that case a stop-over on Pelee Island and a visit to the winery on the island may be of interest. If you like to walk you can spend hours exploring the parks along the branches of the Thames and in downtown. It is about a 30 minuutes walk from downtown to the university campus. Alternatively you can take a bus of the LTC, the London Transport Commission.
Several busses go directly and frequently into the university campus.
One enters the bus at the driver's door and deposits the fare into a box. The driver will not have change and will not sell tickets. Transfers are only valid for a certain period of time and cannot be used for return trips or trip interruptions. There are also bus tickets which can be bought at certain stores. They are significantly cheaper.