Registration and Hotel

    It has come to our attention that one or more companies are claiming to be associated with ASTRO to assist attendees with registration and housing for the 2018 ASTRO Annual Meeting in San Antonio. The only company affiliated with ASTRO to provide this service is SPARGO Inc. Registration and housing for the 2018 ASTRO Annual Meeting will open in mid-June at If you are contacted by anyone other than SPARGO Inc., please use caution in giving out any personal or financial information, and notify us at and pass along any information or communications you receive.
  • Registration and Housing for ASTRO’s 2018 Annual Meeting will open mid-June 2018. This page will be updated prior to then with registration fees and policies as well as information on the official 2018 hotels. Please continue to check back for further information.

  • RegistrationView the categories, rates and deadline for the 2018 ASTRO Annual Meeting registration process.
    Travel InformationFind details on transportation options, San Antonio information and helpful links for international travel.