In regards to the earlier post about YHZ-YUL being diverted to Buffalo.
Whenever I fly to the US, I normally have to fly YHZ-YUL-USA since YHZ has few direct flights.
imagine my surprise to fly YHZ-YUL then get diverted to the US only to fly back to Canada again to then turn around and go back to the USA. lol. That would be interesting explaining that to customs.