Toronto Pearson International Airport is about 40 minutes from downtown by taxi; it’ll cost $50-60. Shuttle buses are around $25. The public transportation system, called the TTC, has a bus that takes you to the subway and then downtown. Have exact change of $3 for this bus, called the 92 Airport Express.
TTC trains, buses, and streetcars traverse the city. One-way fare is $3, and daily, weekly, or monthly passes can be bought in stations. Cash is also accepted, but make sure to have exact change. Taxis are readily available, and HAILO or Uber are the best apps to use to ensure a safe and reliable ride.