Use the direct link to delete your account.
URLS:
http://booking.com
https://secure.booking.com/login.en-us.html?tmpl=profile/delete_account
Please note that AccountKiller.com is not associated with the business listed on this page. AccountKiller provides easy-to-understand instructions and guides on how to cancel charges and relationships from the list of businesses on our site, we have no affiliation with these businesses.