Expect to splurge on this, but it is worth EVERY penny!
We did a helicopter ride to the Grand Canyon. Whole experience takes half of a day. A van will pick you up at your hotel (and make stops at other hotels along the way) and then there is a 45 minute -1 hour ride to the airport. They have you watch a short safety video and then you head out.
The actual flight is amazing and there are great views of the Grand Canyon. The pilot was friendly and gave a short narrative/tour on the flight. We landed in the Canyon at their own landing site and the pilot served us a light snack and champagne.
Great alternative to spending the whole day driving to the Canyon/Hoover Dam from Vegas!