Chicago O'Hare can be challenging due to the size and complexity of the terminal ramp areas and the number of runways. With modern moving map displays, taxiing at large airports is much easier than it was in the past.

Chicago O'Hare International Airport (ORD) is frequently cited by travelers as one of the most confusing and stressful airports in the world in 2026. The primary issues stem from its massive "terminal sprawl," where connecting between domestic terminals (1, 2, and 3) and the international Terminal 5 can require long walks and a ride on the automated people mover system. Passengers often complain about inadequate or inconsistent signage, making it difficult to find gate changes or baggage claim areas in the heat of a connection. Furthermore, O'Hare's location makes it highly susceptible to severe winter weather, leading to cascading delays and cancellations that heighten the sense of chaos. While a multi-billion dollar expansion project (O'Hare 21) is ongoing through 2028 to modernize the facilities and streamline the layout, the current environment—combined with heavy passenger volume—makes it a "puzzle" that requires a minimum of 90 minutes for a safe connection.