This is my second experience at the Montreal airport. This morning, the US Airways staff decided to stroll into work late, leaving a line of passengers with nowhere to go and in confusion. It was even more frustrating when the other airline employees didn't know where they were either. But, once I got my bag dropped off, it was very easy to get through security and customs. It's nice that you can go through US customs here instead of having to do it once you get into the states. Saves time on the back end.