Economy fares have gotten cheaper because rather than charging for miles flown, airlines nowadays rely on charging more to price-insensitive travelers (say, businesspeople) and less to price-sensitive travelers (say, young vacationers). Generating more revenue elsewhere has allowed airlines to slash fares for the cheap flight aficionados of the

The cheapest tickets on a route often include requirements like a minimum 7-day trip or an overnight Saturday stay at the destination before taking the return flight. In doing so, airlines are trying to ensure that business travelers with big budgets aren’t getting the cheap fares intended for leisure travelers. (This is also why many one-way