Harrisburg International Airport — Harrisburg, United States

MDT identifies Harrisburg International Airport, located in Middletown, Pennsylvania, across the Susquehanna River from the state capital. The airport occupies part of the former Olmsted Air Force Base and retains a long runway legacy from that military past, which today allows it to handle larger aircraft and cargo operations, including a UPS hub presence. MDT offers scheduled passenger service to major connecting hubs via carriers like American, Delta, and United, primarily serving central Pennsylvania's state government, healthcare, and agricultural business travelers. Unlike Harrisburg's smaller in-city airstrip, MDT is the region's principal commercial gateway. Its runway length and freight infrastructure also make it a fallback diversion point for larger jets needing extra pavement in the mid-Atlantic corridor.