<font face="Verdana, Arial, Helvetica, sans-serif" size="2">Originally posted by B1:
Because you don't pre-clear, you leave from the International section of the airport. In Toronto, the nonstop to Hawaii leaves from Terminal 1 instead of Terminal 2. The reason is that most people are going on to Australia and New Zealand so they sit in the big transit lounge at HNL. </font>
In case you have't heard, the current situation is that pax on all flights between two countries other than the U.S. but transiting through an U.S. airport, are required to clear immigration and customs even if they don't intend to enter the U.S.