At YUL you'll do Canadian immigration and if asked just tell them you're in transit between flights. Most won't ask details than that. Since no baggage you'll pass through Customs and proceed to US PreClearance to do US immigration & customs. Board your plane and when you land it'll be like you were a domestic flight. Walk off the plane and to transportation.
Originally Posted by
chitink
we do not have luggage. What will we have to do at YUL. We have about 2.5 hours.
It's a bit outdated, in my opinion, law about who can carry passengers between two domestic routes in the territory of a country. It gets complicated with places like Hawaii and Guam.
Originally Posted by
hotturnip
I had never heard or read the word "cabotage" before. I initially thought it was some kind of Flyertalk-invented terminology based on "sabotage."