My dad-in-laws flight from Pheonix to Calgary has been delayed from a 10:50am departure to ‘possibly’ 18:05. When I track it through Air Canada - it hasn’t left yet…but FlightAware shows it departed and arrived on time. What am I missing? I know that I’m looking at March 8th flight 1287. 
Thanks
http://flightaware.com/live/flight/ACA1287/history/20090309/0130Z/KPHX/CYYC
I think this will be the flight.
They’ve filed 2 flight plans, one for the original 11:05 departure and another for a much-delayed 18:30 departure. Neither departed yet, which is why they’re in italics and it says Scheduled in the Duration column.
Thanks I knew there had to be an easy answer… but neither the italics and scheduled meant anything to me.
As long as he and I arrive about the same time - it’ll all be good!! 
That’s why you owe it to yourself to read the questions/answers at flightaware.com/about/faq.rvt (the link is also available at the top of each page on the right hand side). It will help make your enjoyment of FlightAware all that much more better.