I've been a loyal Kayak user for searching for flights and, after getting the flight confirmation from an airline (or hotel). forwarding the info to Kayak which then automatically creates an entry in my calendar. While at airports, I get gate change and delay notifications typically faster from Kayak then even some of the airline apps. Like others here, I miss Flight Track Pro. I purchased and have been using FlightView for the past few months. It's OK and also has the option to receive confirmation notices so that it fills in the itinerary automatically (unlike Flight Track that required you to manually add flights). I found the FV widget annoying in that it only indicated that a flight was scheduled instead of actually displaying the time (Note: I see in one of the posts above that it does show the times. Don't why it doesn't for me). The other day, however, I paid more attention to the Kayak widget and noticed that it showed me the flights as well as the times (see screenshot. It shows the two widgets with FV sitting above the Kayak one)! Furthermore, when I followed the link back to the Kayak app, I was presented with a neat and clean graphic detailing both legs of my trip with the anticipated layover times (see other screenshot). Further investigation showed detailed terminal maps--down to the individual restaurant and shop level, weather info, ticket details, booking info, and even the link back to the email containing the confirmation info.
Long story short--I think I've found my Flight Track replacement! And it's even free! (I curious about Flight Update Pro but it has some stiff competition at this point)