3450 East Airport Drive Suite 500 Ontario,
US (1) 909-390-1441
Hours of Operation:
Sun - Sat 5:00 AM - 12:00 AM
You can fill out contract & drop keys inside the drop box located at the location. Lock the vehicle and place the keys and contract in the key drop box. The box is labled Avis Budget After Hours Return. Don't forget to remove all your belongings from the vehicle prior to returning the keys.