After 14 years of planning and development, the Flight 93 National Memorial was completed and opened to family members of the victims on September 10, 2015.

The completion of the Flight 93 National Memorial in Shanksville, Pennsylvania, was a multi-phase process that took approximately 17 years from the date of the September 11 attacks to its final dedication. The memorial was officially established by Congress in 2002, but the design competition and land acquisition delayed significant construction for several years. The first phase, which included the Wall of Names and the Memorial Plaza, was dedicated on September 10, 2011, the eve of the 10th anniversary of the tragedy. The Visitor Center and Learning Center opened four years later in September 2015. The final major element of the memorial's original design, the Tower of Voices—a 93-foot-tall structure containing 40 wind chimes to represent the 40 passengers and crew—was dedicated on September 9, 2018. In 2026, the site is considered a fully realized and sacred landscape, managed by the National Park Service. It stands as a permanent tribute to the "Citizen Soldiers" who fought back against hijackers, thwarting a planned attack on the U.S. Capitol.