It may not be much, but in the past nine months, I've logged five trips on Air Canada, from DCA (Washington National) to YYZ. Only once was I ever delayed, on the return leg, where our crew was coming on another flight that was late and had to cross the airfield to get to the T-2 regional terminal. The delay was caused mostly by the fact that there's no convienient way for crew that has been pre-cleared through customs to get from one end of Pearson to the other. I imagine that they have to take vans across the taxiways, which results in lost time waiting for aircraft to push back.
In any case, all of my flights were fast, smooth and got me from point A to B rather quickly. The CRJ's they fly are clean and quiet (although I have a bone to pick over the squat windows that you have to crouch forward to look out of--that's Bombardier's fault, though, not AC's).
The one thing that I really like about AC's service on the DCA-YYZ run is that their schedules have several early flights and a late flight which gets in at 10:50, allowing me the maximum time up north. All of the other carriers flying the route (AA and US) would force me to fly in two hours later and come back at least two hours earlier. I find it interesting that they fly the early morning flights, though--the 7:20 never has more than 15-20 people on it; though, they're 99.5% businessmen, so maybe they're flying at full-fare and make the flights worthwhile. Who knows? Maybe someone at AC can tell me if they're making any money on the run.
AC's facilities at T-2 are top-notch, and I am very, *very* impressed with the check-in kiosks and video departure and arrival boards. On more than one occasion, the kiosks have saved me from a 15-minute wait in line. T-New looks extremely impressive, and it's going to be fun flying through there in a few years.
AC's employees are a mixed bag. Most of the time, they're okay, somewhat friendly, but nothing out of the ordinary. I've come across a couple of storm troopers, but I suppose there are a few at every airline. The counter agents at DCA seem to be a bit young and undertrained, but they're nice on the whole. The Air Ontario people up at BWI seemed a little nicer, though, when I was there.
Overall, I have never had what I'd consider a bad experience with AC. There have been a delay and a ticketing problem, but those were resolved in short order. I would, however, like to see more scheduled competition out of Toronto to get better fares, and I'm really hoping that WestJet and CanJet start thinking about bringing transborder service about soon.
Other than that, I love AC's paint scheme!