For three years in a row, Luis Muñoz Marín International Airport (SJU) has consistently had a high number of flight delays. Over a quarter of flights from the airport were delayed between 2023 and 2025, according to an analysis by travel insurance marketplace InsureMyTrip. That has put the airport among the four-worst U.S. airports when it comes to getting travelers to their destination on time in recent years. Luis Muñoz Marín International Airport was the country's most delayed airport in 2023, and it remained near the top of the InsureMyTrip list in the two years after that — a pattern that suggests delays here are more than an occasional bad travel day. In 2025, the most recent year analyzed in the study, over 26% of flights at Luis Muñoz Marín International Airport were delayed.