Hello,

I have an upcoming booking that terminates in YYZ from DFW. Due to a change in plans I'm going to be booking a separate flight back to the US the same day. If I do not have any checked bags will I have to clear immigration in Canada then go back through US border control check? I have the option of a 1.5 hour connection or a 4 hour connection.

If I can skip immigration with no checked backs is 1.5 hour connection for arrival and departure in terminal 3 realistic to make?

Thanks in advance!