Passenger counts continued to grow at Ontario International Airport in March

The number of passengers who chose Ontario International Airport (ONT) rose for the 49th straight month in March as the airport welcomed nearly 560,000 travelers. The Southern California gateway’s passenger count totaled 559,619 last month, up 0.5% from March 2024. During the first three months of 2025, ONT welcomed almost 1.5 million air travelers, 0.6% higher than the same period in 2024.