When United Flight 9 to Chengdu, China departed San Francisco International Airport on Monday, it marked the joining of two cities, two countries, and two continents in a way that has never been done before. Today, airlines add new service between city pairs on a weekly basis, but these are typically routes that have been flown before and are not exactly breaking new ground, unlike the way it was in the early days of commercial aviation, when almost every new route was considered a pioneering… (www.frequentbusinesstraveler.com) 更多...