When you absolutely, positively don't need to get anywhere.
U.S. airlines have figured out the art of scheduling a flight to take twice as long as it actually takes, that’s why you’ll see Delta showing a flight that takes 1.5 hrs as having a block time of nearly 3 hrs (no, the taxi doesn’t take that long). That way they can claim they were on time or early when they were actually 30 minutes late. It’s a game to keep the DOT off their backs and pad their made up “on time” statistics. I don’t know if Air Canada does that, most likely not which is why they lag behind the U.S. carriers in the statistics.
U.S. airlines have figured out the art of scheduling a flight to take twice as long as it actually takes, that’s why you’ll see Delta showing a flight that takes 1.5 hrs as having a block time of nearly 3 hrs (no, the taxi doesn’t take that long). That way they can claim they were on time or early when they were actually 30 minutes late. It’s a game to keep the DOT off their backs and pad their made up “on time” statistics. I don’t know if Air Canada does that, most likely not which is why they lag behind the U.S. carriers in the statistics.