An Envoy Air-operated American Airlines flight traveling from Knoxville to Chicago diverted to Fort Wayne International Airport this week, as air traffic congestion and weather-related constraints in the busy Midwest airspace triggered a second regional diversion affecting carriers serving Chicago O'Hare. Public flight tracking data shows American Airlines flight ENY3603, operated by regional affiliate Envoy Air with Embraer 170 and 175 equipment on the Knoxville to Chicago route, diverted from its planned arrival at Chicago O'Hare International Airport to Fort Wayne International Airport. The diversion placed the aircraft at a smaller regional airport roughly 150 miles southeast of Chicago. Available information indicates that the aircraft landed safely at Fort Wayne and that the diversion was handled as a routine operational adjustment rather than an in-flight emergency. The diversion unfolded against a backdrop of recurring air traffic management challenges across the Midwest, with the Federal Aviation Administration's Air Traffic Control System Command Center describing continuing weather impacts and flow constraints affecting Chicago controlled airspace. In the days leading up to the diversion, thunderstorms and convective weather patterns pushed through the region, prompting ground stops and extended delays for flights bound for O'Hare.