Fly nonstop between Ontario, Calif., and Baltimore/Washington with Southwest Airlines beginning June 2025

BWI becomes ONT's 26th nonstop destination ONTARIO, Calif., Oct. 30, 2024 /PRNewswire/ -- Cheers went up at Ontario International Airport (ONT) when Southwest Airlines announced it will begin daily service to Baltimore/Washington International Thurgood Marshal Airport (BWI) June 5, 2025....