Singapore Airlines does not fly direct to Ontario International Airport (ONT) in California. However, passengers Singapore Airlines Ontario International Airport from Ontario can connect onto Singapore Airlines from major hubs like Los Angeles International Airport (LAX) or San Francisco International Airport (SFO). Singapore Airlines is a world-class service provider that offers flights to Singapore Changi Airport (SIN) and beyond. Passengers are able to book connecting flights to LAX or SFO using partner airlines or ground transportation. For more detailed schedules and travel information, passengers are advised to look on the official Singapore Airlines website.