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

Add Yahoo as a preferred source to see more of our stories on Google. Sun tells PEOPLE crews allegedly found feces from an undeclared pet before takeoff A Frontier Airlines flight attendant recently ...

A passenger who was asked to leave a Frontier Airlines plane departing from Denver was later cited for striking an airline employee with an intercom phone, according to the airline and police. While ...

"This is the first time I've seen something like this," Frontier passenger Mark Sun tells PEOPLE A Frontier Airlines flight attendant recently encouraged passengers to "snitch on" their in-flight ...