Frontier Airlines is considering seven cities as possible locations for a new $25-million maintenance facility.
The negotiations come as Denver-based Frontier prepares to acquire about eight new aircraft over the next year.
Frontier chief executive Jeff Potter says he'd prefer to build in Denver -- where Frontier's hub is -- but says preliminary talks have been held with six other cities as well.
Frontier officials declined to name them.
Frontier has about 45 planes. The company subleases 80 percent of a hangar that Houston-based Continental Airlines leases from Denver International Airport, but would cancel the deal if a new facility is built.
Frontier is the second-largest carrier at D-I-A after United Airlines.
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