As I have said before I now work about 40% of the time in Phoenix & I make the drive to Vegas on a regular basis; most recently last week.
Apparently kevin knows more than Google maps which Boiler researched. Except for a 1 mile stretch thru Searchlight the speed limit is 65 & most people drive 75. So the drive from the airport to Laughlin is 90 minutes.
Meanwhile the drive from Sky Harbor is 3.5+ hours. It is almost 200 miles from the airport to Kingman. Traffic can be heavy on the 10 & the speed on the 60 is about 55. There is highway construction on the 93 north of Wickenburg & some good size mountains on the approach to Wikiup. And hopefully you don't get stuck behund a truck on the 2 lane portion of 93.