Louis Armstrong New Orleans International Airport — New Orleans, United States

A call sign that puzzles visitors unfamiliar with its history still marks Louis Armstrong New Orleans International Airport: the code MSY is a holdover from the airport's original name, Moisant Field, honoring aviator John Moisant rather than the jazz legend the airport now celebrates. A new terminal opened in 2019 replaced the aging mid-century building that had served the city for decades, adding modern concourses better suited to handling the surge of visitors who arrive each year for Mardi Gras, Jazz Fest, and the broader tourism economy that defines New Orleans. Music runs through the terminal's identity deliberately, with live performances and design touches nodding to the city's outsized cultural influence relative to its size. Major carriers built substantial service given New Orleans's popularity as a leisure destination, while the airport also supports oil and gas industry traffic tied to the Gulf Coast. Humid subtropical weather and occasional hurricane threats shape seasonal operations at MSY.