Aviation Industry - International transit efficiency is no longer a vague concept; it is precisely measured by how many viable flight connections an airport can generate within a defined transfer window. According to the latest data from OAG, hubs like London Heathrow Airport (LHR) with over 59,000 connections to 226 destinations, and Istanbul Airport (IST), with 82,733 connections to 327 destinations, dominate global rankings because of their dense airline networks and tightly coordinated schedules.