I am not a pilot but I can give you some general info from my experiences as a passanger on short flights. For example, i quite often fly from Edmonton to Calgary which, to drive it, is only 200 miles. I flew on a CAI F28 last week, our flight was scheduled to leave at 6:00 pm which actually left at 5:55.(Light load, not busy) The sceduled arrival time is 6:40 but we were at the terminal getting off the plane at 6:25 so actual flying time was somewhere just over 22 minutes. We achieved an altitude of 26,000 feet on that flight and attained for only a few minutes before we started back down. The highest altitude I have flown at from Calgary to Edmonton is 29,000 on a Westjet 737. The Dash 8 service on AC and CAI is considerably lower than that, somewhere between 16 and 20 thousand feet.
I have flown on an A340 on AC from Vancouver to Edmonton once, which is the largest plane I have ever travelled on for that short hop. Travel time for that segment can be as long as 1hr 15 minutes and I have been on a plane that did it in 47 minutes with a big tail wind. Usual service on that segment is 737/320/F28/DC9 depending on which airline. Altitudes of up to 38,000 feet are common for even that short segment.
These are just my experiences as a passenger. An experienced airline employee could probably offer a lot more info than me.