Enough is enough: That’s the message from Frontier Airlines’ new leader about the budget airline’s turbulent history of flight delays and cancellations. And the airline is prepared, he said, to make major changes to get better. “We’re simply not satisfied with our past record,” recently appointed CEO James Dempsey said on the company’s earnings call…

For decades, airlines have relied on cold, hard math before deciding to fly to a new city. How many seats will they sell? How many other airlines are they up against? Will it be profitable? Spreadsheets. Number-crunching. Projections. Yet, in an age where data seems to rule everything — from a football team’s playsheet to…