Singapore Airlines does not offer direct flights to Ontario International Airport (ONT) in California. However Singapore Airlines Ontario International Airport passengers from Ontario can connect to Singapore Airlines flights through major hubs such as Los Angeles International Airport (LAX) or San Francisco International Airport (SFO). Singapore Airlines is renowned for its world-class service and offers flights to Singapore Changi Airport (SIN) and beyond. Passengers can book connecting flights through partner airlines or ground transportation to reach LAX or SFO. For the latest schedules and travel options, checking the official Singapore Airlines website is recommended.