The Learjet 60 is used by private operators, companies and fractional jet operators.

He also predicted that private jet operators would offer "huge discounts" on his site so they could avoid returning empty to their originating airports.

In 1997, the airline became a jet operator with the delivery of its first Boeing 737-200QC which was used for passenger and freight services.

He later was president of Continental Express, the regional jet operator.

Such flights can be a lot less expensive than they appear, since prices from private jet operators include all of a plane's seats.

During that first wave, though, many private jet operators lacked the technology to help Web sites reliably track and predict the availability of their aircraft.

Industry executives say that jet operators are more technologically savvy now, and Web sites are also refining their approaches.

The company indicated that orders for aircraft had slowed down, especially by fractional jet operators.

Its fleet of cheaper and lighter aircraft allows the company to provide services at a lower cost versus traditional private jet operators.

Passengers on corporate jets are not usually subject to screenings by agency workers; security is provided by the jet operator and pilots under federal guidelines.