By Kevin Maney, USA TODAY

A technology entrepreneur on Monday unveils a new kind of on-demand airline that could alter the way people travel between midsize cities.

DayJet, of Delray Beach, Fla., will marry two advanced technologies: Very Light Jet (VLJ) aircraft, which can seat four passengers and operate at half the cost of today's small jets; and sophisticated computer databases that can determine the most efficient ways to route those aircraft to pick up customers.

On-demand airline could alter travel to midsize cities, continued