We didn’t plan to stay in Toronto because we had no car which limited where we could go.
We got up at 9:30am and had lunch at the CN Tower. After lunch, we walked back to the hotel and got ready to the airport. We arrived the airport at 3pm to take the 6pm flight. Initially, we thought we must be so early. However, going thru the security took us a long time, especially, we are just a visitor. We didn’t get to the gate until 4:30pm.
After we sat down, we thought the flight would be ready to departure soon. No…. there were delays after delay. The flight didn’t departure till 8pm. 
We finally arrived grandma’s place, New York, at 10:15pm.