The Sunday night security incident came just days after a pedestrian jumped the perimeter fence at Denver International ...

A Frontier Airlines flight deplaned at Denver International Airport on Sunday after an ammunition magazine was discovered on ...

Frontier's nearest competitor, Spirit Airlines, shut down after higher fuel expenses upended its plans to emerge from ...

The incident is currently under investigation, according to reports ...

Frontier Airlines doesn’t have a lot of fat to trim and it can’t raise fares too much without alienating its budget-conscious ...

Frontier Group, the parent of low-cost carrier Frontier, forecast a bigger-than-expected second-quarter loss on Tuesday, ​as ...

The National Transportation Safety Board says it is gathering information about the evacuation of a Frontier Airlines plane ...

Frontier Group, the parent of low-cost carrier Frontier, forecast a bigger-than-expected second-quarter loss on Tuesday, as a ...

Your carry-on bag might be costing you $100 at the gate. Here is exactly why, and how to avoid it.

Passengers on a Frontier Airlines flight out of Denver had their Sunday night plans upended when a loaded gun magazine was ...

Spirit Airlines revolutionized the airline industry with its ultralow-cost model, inspiring changes in fare structuring ...