After filing for bankruptcy protection and going back and forth with Frontier Airlines — again — over a potential acquisition ...

DENVER — Hundreds of flights at Denver International Airport were delayed or canceled Thursday morning. As of 8:30 a.m., 127 ...

The two airlines have sent proposals and counterproposals during a recent bid from Frontier to take over bankrupt Spirit ...

A merger of America's two largest budget airlines appears increasingly unlikely. Spirit Airlines on Thursday rejected ...

An unruly passenger on a Frontier Airlines flight was tackled by fellow passengers Tuesday after they say he began punching ...

Spirit Airlines has again rejected a third takeover bid from budget rival and Denver-based Frontier Airlines, saying that it ...

According to the Houston Police Department, a man on the flight was acting erratically and began punching the seat in front ...

A man aboard a Frontier Airlines flight was restrained by fellow passengers on Wednesday after damaging the 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 aboard a Frontier Airlines flight to Houston had a violent outburst on Wednesday after being asked to move, ...

"He was scary," a witness said. "He started kicking profusely and started punching the window." Passengers on board ...