A Frontier Airlines aircraft made an emergency landing at Raleigh-Durham International Airport (RDU) in North Carolina Saturday out of an abundance of caution after an odor-related incident. "Earlier today, Frontier Airlines Flight 1159 from Norfolk to Orlando experienced a fume/odor event. Out of an abundance of caution, the aircraft diverted to Raleigh-Durham, and both passengers and crew exited the aircraft via evacuation slides," a spokesperson for Frontier Airlines told Fox News.