ATL-YYZ, when I took it was on a CR7, which now they have CR9 every now and then. Actual flying time in the air is around an 1 1/2 hours.
This is far shorter when I had to go ATL-MSP on a CR7.
But usually Air Canada/Jazz uses CRJ 100/200 and CR7s on the ATL-YYZ route.
Jwhuffman