Share this article Share this article ONTARIO, Calif., May 24, 2021 /PRNewswire/ -- Passenger volume at Ontario International Airport (ONT) will approach pre-pandemic levels during the summer travel months, airport officials forecast, as more than 1.4 million air travelers are expected to arrive and depart at the Southern California aviation gateway. Passenger volume at Ontario International Airport (ONT) will approach pre-pandemic levels during the summer travel months, airport officials forecast, as more than 1.4 million air travelers are expected to arrive and depart at the Southern Cali...