Twenty minutes into the flight from Denver to Houston, witnesses say the man was punching the seat in front of him.

The flight had departed from Denver and was in the air for about 20 to 30 minutes, when a woman asked the man behind her to ...

"He was scary," a witness said. "He started kicking profusely and started punching the window." Passengers on board restrained the man with zip ties and a shoelace.

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

A Frontier Airlines passenger was restrained on the airline's Flight 4856 from Denver to Houston after he was screaming and punching the aircraft's windows on Tuesday, Feb. 4.

Frontier Airlines will have to compete with American Airlines and United Airlines on two out of the three routes.

Frontier Airlines on Monday announced a new nonstop route between Tampa International Airport and Charlotte Douglas ...

Low-cost air carrier Frontier Airlines is adding three new routes this spring, connecting more destinations across the U.S.

The time that passed was not good to Spirit. The airline was bleeding money and shrinking, and it was barreling toward bankruptcy. Apparently last summer, Frontier saw this and decided to take another ...

In December, Frontier launched five new nonstop routes out of TPA including flights to Boston, Portland, Maine and Burlington ...