By John LaConte and Scott Miller, Vail Daily Eagle Resident Missy Kraft had never flown out of the Eagle County Regional Airport before Monday. But she had her bag packed and was ready to fly Frontier Airlines to Denver. Related Articles Airlines | Frontier to roll out first-class seating, a big change for the no-frills airline Airlines | Spirit Airlines files for bankruptcy as financial losses pile up and debt payments loom Airlines | Pilots for Denver-based Frontier Airlines vote to strike if necessary Airlines | DIA opens 14 “ground-boarding” gates Airlines | Frontier Airlines will soon offer nonstop flights to a popular Colorado ski area through the summer Kraft was ready to catch the 40-ish-minute flight to Denver so she could catch another Frontier flight to Arizona, where her daughter is ready to give birth to twins. “It’s kind of a last-minute flight,” Kraft said.