If an airline doesn’t arrive on time, customers will be unhappy. That’s simple enough, right? As American Airlines ties the attempt to improve their operation to the happiness of customers, it’s arriving on time that they find matters (“A14” or arriving within 14 minutes of schedule) rather the merely departing on time. Customers won’t be ‘likely to recommend’ if they landing early and find they have no gate for half an hour!
But is that all that matters? Obviously people want to get where they’re going, but they may still be unhappy. And several airlines can deliver well on performance, that’s not enough to distinguish one airline from another.