Tulsa International Airport — Tulsa, United States

Tulsa International Airport anchors air travel for northeastern Oklahoma and carries particular significance in the aviation industry as home to American Airlines' largest maintenance and engineering base, a sprawling complex where thousands of employees service and overhaul aircraft from across the carrier's fleet. TUL offers domestic routes to major connecting hubs including Dallas-Fort Worth, Chicago, Atlanta, and Denver, supporting a metropolitan economy historically built on oil wealth and now diversified into aerospace, finance, and technology. Tulsa's Art Deco downtown architecture reflects the prosperity of its early twentieth-century oil boom years, a period that also shaped the airport's early development as regional aviation expanded across the central United States. The facility operates alongside a separate general aviation airport in the city, keeping commercial and private traffic largely distinct.