Pittsburgh International Airport — Pittsburgh, United States

Pittsburgh International Airport, coded PIT, was built during the early 1990s at a scale designed around US Airways' major connecting hub operations, complete with a distinctive airside shopping concourse that once made it something of a destination for its retail and dining options alone, before the airline dramatically scaled back its Pittsburgh presence in the early 2000s and left the facility with far more capacity than passenger demand required. That mismatch prompted years of discussion about right-sizing the airport, culminating in a new, more compact terminal that opened in 2025 and consolidated operations into a design better matched to current traffic levels. Located west of the city in Findlay Township, PIT today supports a mix of domestic carriers without a dominant single-airline hub, alongside growing cargo operations tied to the region's logistics and technology sectors. Pittsburgh's three rivers and hilly terrain frame approaches into the airport from several directions.