Looked through the other posts but could not find this one.

I am flying next Saturday YYZ - CLE. The flight is operated by Air Canada (Air Georgian CRJ 100/200).

I am currently on the 2040 flight but would really like to get on the 1255 flight to make sure we actually get there. Today there was some weather and AC cancelled all three flights to CLE.

My only problem is that the ticket was issued on United ticket stock. Does anyone know if I will be offered the chance to do an same day change?

Anyone have any experience with this? Thanks for any and all advice.