Originally Posted by why fly

AC is a very difficult airline to deal with, however since your reward ticket is with UA miles, UA are often very helpful when you get a sked change even with a different airline.
AC is horrible in helping out even with its own schedule changes.
Often these DEL flight let you book yyz-ewr-del you would be much safer doing that, then UA is great about sked changes. in fact they would let you fly IAH-EWR-DEL if you get a sked change At times I LOVE UA sked changes!