Rialto Municipal Miro Field

The closure was primarily driven by economic factors and urban development. The City of Rialto, which owned the airport, saw the land as more valuable for commercial and industrial development to generate tax revenue, especially following the city's bankruptcy filing in 2012. The redevelopment was part of a larger project known as the 'Rialto Renaissance' aimed at revitalizing the city's economy. The land was sold to a developer to create a logistics and commercial hub.

The airport site has been completely demolished and redeveloped. It is now a massive industrial and commercial hub featuring large-scale logistics and distribution centers for major companies like Amazon, Target, and Medline, as well as a retail shopping center known as the Renaissance Marketplace. All traces of the former runways, hangars, and airport infrastructure have been removed.

Originally established in 1944 as Rialto Army Airfield, it served as a primary flight training base for the U.S. Army Air Forces during World War II, where pilots trained on Stearman biplanes. After the war, it was transferred to the city and became a public-use general aviation airport named Miro Field, in honor of a local pioneering aviation family. For decades, it was a vital hub for private pilots, flight schools, and aircraft maintenance. It was particularly well-known for its extensive skydiving operations and served as an important reliever airport for the increasingly congested airspace around Los Angeles and Ontario International Airport. Its FAA identifier when active was L67.

There are no plans or prospects for reopening the airport. The land has been permanently repurposed and is now occupied by significant commercial and industrial infrastructure. The complete redevelopment makes a return to aviation use functionally impossible.