EXHIBIT 23.5(a) INDEPENDENT AUDITORS' CONSENT - ----------------------------- We consent to the incorporation by reference in this Registration Statement of CUC International, Inc. on Form S-4 of our report dated March 13, 1995, appearing in the Annual Report on Form 10-K of Advance Ross Corporation for the year ended December 31, 1994, and to the reference to us under the heading "Experts" in the Proxy Statement of Sierra On-Line, Inc., which is part of this Registration Statement. /s/ Deloitte & Touche LLP DELOITTE & TOUCHE LLP Chicago, Illinois June 17, 1996