On the Avis.com.jm homepage, select the View/Modify/Cancel link from the Reservations tab at the top of the page. Enter your Last Name and your Reservation Confirmation Number and click the Find Reservation button.
On the next page, select the link listed next to your reservation to either View, Modify, or Cancel. You will then be able to view your reservation, modify rental details, or cancel the reservation. For those customers that have registered on Avis.com and have an Avis Profile or an Avis Preferred or other membership, simply use the Login link located at the top navigation of the Home Page. Once you are logged in and on the My Account page, you simply need to click the reservation link.
After any modification or cancellation, Avis sends a confirmation to the e-mail address entered for that reservation.