CNN By Matt Rehbein, Hanna Park, Martin Goillandeau, Lauren Mascarenhas, Mike Figliola, Mary Gilbert, CNN (CNN) — Some passengers were terrified, convinced the plane was going down. One seasoned traveler said it was the roughest flight he’d ever taken.

A Delta Air Lines flight from Salt Lake City to Amsterdam was diverted to Minneapolis-St. Paul International Airport on July 30 after encountering "significant turbulence" that resulted in 25 people being transported to hospitals, the airline said.