Ontario International Airport

Ontario International is the secondary commercial airport for the greater Los Angeles region and the primary airport for the Inland Empire — the San Bernardino and Riverside counties metropolitan area that is home to roughly 4.6M residents, one of the fastest-growing population centers in the United States. It sits 60 km east of downtown Los Angeles and functions as a natural alternative to LAX for eastern LA basin travelers, who face severe congestion reaching the coastal hub. Two parallel runways (the longer at 12,197 ft / 3,718 m) and two terminals (T2 and T4) support approximately 74 routes to 49 destinations via 22 airlines. Southwest Airlines is the dominant carrier with the largest share of movements; American, Delta, United, Alaska, Frontier, Spirit, JetBlue, and Hawaiian all operate scheduled services, and Volaris and China Airlines anchor international service to Mexico and Taipei respectively. ONT's service to Taipei (Taoyuan) makes it one of very few US secondary airports with a long-haul transpacific scheduled route, reflecting the region's significant Asian-American population and the Inland Empire's role as a logistics center. The airport is one of North America's most important air-cargo facilities. UPS operates its West Region Air Hub at ONT — the company's second-largest US sort facility after Louisville — with daily widebody arrivals from Asia and the company's 747-8F and MD-11F fleet. FedEx also maintains significant operations. Governance returned to local control in 2016 under the Ontario International Airport Authority after decades of LAWA (Los Angeles World Airports) operation, which had suppressed traffic; passenger volumes have since roughly doubled, reaching approximately 6.6M in 2023.