CHICAGO: OAG, the global authority on air service information, today named the American Airlines hub at Chicago O’Hare International Airport (ORD) the best-connected U.S. airport and a leading international hub — second only to London Heathrow (LHR) — in its 2018 Megahubs U.S. Index. American has played a large role in increasing connectivity and offering travelers more options, offering more …






