Incredibly poor customer service which is unfortunate because the pilots were friendly and the tour is perfect for those who want to view the grand canyon through an airplane.
The Highlights Air Tour consists of a shuttle picking you up at your Vegas hotel and then droping you off at the Boulder City airport where you take a small airplane over Hoover Dam, Lake Mead, Colorado River and the west rim of Grand Canyon. You're in the air for about 45mins to an hour. The total trip from hotel to hotel is about 4 hours.
I think it's worth the money to see the Grand Canyon this way but beware of the customer service. Maybe you'll have better luck if you try this company.