American Airlines marks 100 years since its 1926 Chicago–St. Louis mail flight with nationwide centennial activations
American Airlines is celebrating its centennial on April 15, 2026, tracing the airline’s roots to a 1926 DH-4 biplane carrying mail only between Chicago and St. Louis under Robertson Aircraft Corporation. The carrier plans systemwide customer activations across 11 locations alongside special flights and exclusive experiences, framing a “Forever Forward” push.