This is a great way to see the Grand Canyon, particularly if you don't want to spend time on the road to do it. The ariel views were great and everyone had a window seat for the short flight. The Canyon itself was magnificent and the sky walk well worth doing for the spectacular views.
I do have a grumble though. I had booked to go on the 2 PM trip because we had plans for the morning and also I particularly wanted to benefit from the later afternoon light for photography. Therefore disappointed to be told we would be picked up at 10am from the hotel for the mid day flight and there was nothing that would make them correct that. Also this meant that as we also picked up from several hotels for the helicopter tour en route( and these seemed to depart before our flight) actually it still took in excess of 3 hours from Hotel to Canyon - not much of a time saving really.
Still spectacular views that couldn't be missed even if it did mean rearranging our planned morning activities.
My advice would be to be very specific and get written confirmation of flight times if they matter to you. Other than that it was a great experience.

The guide was friendly and humorous and kept the party well informed. The visit to the canyon was excellent. However, in our opinion, more time should have been given to the excellent visitor facility for Red Rock Canyon and the canyon itself, and far less to the ranch. In reality, lunch was not needed on this trip and the lunch break just unnecessarily extended the tour and dragged it out that little bit longer than needed. But in terms of the canyon, very much worth seeing.

Excellent trip; knowledgeable and informative guide who managed the tour to make effective use of everyones time. The dam is very much worth visiting in its own right and going by hummer was a fun twist that got us there ahead of the crowds. Would recommend this trip.

Fantastic show that has you engrossed from start to finish. I would recommend this show above all others in Vegas. If you can only see one show - make it "O"