Combine a grand canyon helicopter flight with a river float down the colorado river for an incredible and exciting day tour from las vegas start your day with a scenic 60 minute helicopter flight over hoover dam lake mead and the grand canyons west rim before enjoying a relaxing river float down the colorado river and through the black canyon with your informative guide keep an eye out for big horn sheep osprey and great blue heron as you head down the river where youll stop for a swim at