“The staffing for flight attendants, especially domestically, is at FAA minimums,” said Sara Nelson, international president of the Association of Flight Attendants-CWA. “Our jobs are harder than they’ve ever been.”

Sustainable aircraft fuel is tricky — electric batteries and biofuels have big drawbacks. A startup is converting carbon dioxide into jet fuel.

Lots of people want to travel. But not enough people are ready to staff flights.

Alaska Airlines beats out Jet Blue on the deal. How will it effect Virgin America's loyal customers?