score:6
You have a number of choices:
You can also take a cab or a limo but they will not be cheap. You can get an idea of fares from the airport site.
Upvote:7
The UP Express Train will take you from downtown Toronto (Union Station) to Pearson International Airport "in 25 minutes". Currently, a one-way adult ticket is $12 CAD.
Some lesser-known, but good-value fares are:
Guests meeting travellers at the airport may purchase this return ticket at a reduced fare. Trips must originate from Union, Bloor and Weston stations only. Fare expires within 4 hours of your trip start time.
Guests with long flight layovers can purchase this return ticket at a reduced fare. Valid from Pearson Station only. Fare expires within 7 hours of your trip start time.