Toronto - Florida is one of the most popular routes for Canadian Air Travellers, Air Canada and all of the Charter Airlines have direct flights to Tampa, Orlando, Miami or Ft. Lauderdale
My 1st/4th cruises, I flew Skyservice - a Canadian Charter carrier from Toronto-Ft. Luaderdale
My second cruise I flew US Air - they sent me Toronto-Reagan-Orlando - with the 30 seating requirement arriving and departing in Reagan we only had 10 min of airtime once we levelled off before we had to sit down again.
AA had a direct flight to Miami for my 3rd trip.
North West Airlink does Fly into my hometown of Kitchener (1 hour west of Toronto) with Saab 340 turboprops into Detroit, but the connections to Florida are not there to connect with a cruise ship in time - I would prefer to drive the hour and get a direct flight.