Dallas Fort Worth International Airport — Dallas-Fort Worth, United States

Positioned deliberately between two cities that once competed fiercely over regional air service, DFW opened in 1974 as a compromise hub large enough to satisfy both Dallas and Fort Worth, and has since grown into one of the world's busiest airports by aircraft movements. Its total acreage places it among the largest commercial airports in the country, large enough that the property holds its own zip code and needs an automated people-mover, the Skylink train, to shuttle passengers between five terminals. American Airlines operates its largest hub here, anchoring an extensive domestic and international network that makes DFW a critical connecting point for travelers crossing the country or heading overseas. Multiple parallel runways allow simultaneous operations even during heavy Texas thunderstorm activity, helping sustain strong on-time performance despite the airport's scale.