Please be aware that Toronto has multiple airports and that these results are only for Lester B. Pearson International airport.
The best day to arrive at Toronto is Thursday and it would be best to avoid Saturday, as prices are on average 148.45% higher than on Thursday. (Average prices, based on 368 datapoints.)
At Toronto the most flights depart around 17:00. (Hourly flights, based on 287 datapoints.)
From Toronto it is on average the cheapest to fly to Calgary and to New York. (Average prices, based on 73 datapoints.)
From Toronto most of the flights depart to New York, second best connected from Toronto is Chicago. (Daily flights, based on 93 datapoints.)