My experience with CO, pre merger, was almost 100% notification of schedule changes. Since March 3 of this year, I have not received any notification from UA about schedule changes. Their computer system is just plain horrible! My trip to MUC in November has been changed several times. When I view the reservation, I have to acknowledge the change in order to continue. I do that and nothing happens. Even called the 1K line and they could not fix the glitch. And by the way, my itinerary shows me on UA 902, IAD-MUC, 11/23, on an ERJ-145, in BF no less!

Bottom line, ALWAYS check your reservations, at least weekly. You should not have to, but that is the way it is. Now that UA is the biggest U.S. airline, they are a semi monopoly. They know it and act accordingly. If they really cared about customer experience they would be bending over backwards to make it better. Instead, you get a lame, half hearted mea culpa in the current Hemisphere magazine.