A passenger on a Frontier Airlines flight had to be restrained by other travelers after he broke a plane window.

A crazed Frontier Airlines passenger was restrained by a group of fellow travelers with makeshift restraints after repeatedly punching the seat in front of him.

A passenger who appeared to be experiencing a mental health crisis punched out the plexiglass of a window mid-flight.

That's when he snapped and began punching the seat in front of him and the plane window. Video from the incident shows a number of male passengers holding him down in an attempt to restrain him.

A Frontier Airlines passenger was restrained on a flight from Denver to Houston after he allegedly began screaming and punching the aircraft window Charna Flam is a writer-reporter at PEOPLE.

An out-of-control Frontier Airlines passenger punched an airplane window so hard that it cracked before he was hogtied by other passengers. The unidentified man was on board Frontier Flight 4856 ...