Justin Hawkins added 14 points for the Utes, who improved to 27-4 and who will play for the tournament title Saturday night against the San Diego State-New Mexico winner.
Romel Beck led the Rebels with 19 points.
Utah owned a 14-point lead at the break and then scored the first five points of the second half. UNLV fought back to within three on a number of occasions, but the Utes held on to down the Rebels for the third time this season.
2014: NFL Cheerleaders [PHOTOS]
UPI Sports Results for September 19, 2014