A relaxing stay at the gateway to southern california welcome to the hampton inn suites ontario ontarios lush landscape is home to californias oldest winery as well as dairies orange and olive groves and vineyards because of ontarios location at the apex of three major freeways the city is known as the gateway to southern california and guests at our ontario hotel will enjoy staying at the center of it all less than an hour from our ontario hotel youll find mountain ski resorts