EXHIBIT 23.1 INDEPENDENT AUDITORS' CONSENT We consent to the use in this Registration Statement of United Parcel Service, Inc. on Form S-4 of our report dated February 8, 1999 (relating to the consolidated financial statements of United Parcel Service of America, Inc.), appearing in the proxy statement/prospectus, which is part of this Registration Statement. We also consent to the reference to us under the heading "Experts" in the proxy statement/prospectus, which is part of this Registration Statement. /s/ Deloitte & Touche LLP - ------------------------- DELOITTE & TOUCHE LLP Atlanta, Georgia July 20, 1999 INDEPENDENT AUDITORS' CONSENT We consent to the use in this Registration Statement of United Parcel Service, Inc. on Form S-4 of our report dated July 20, 1999, appearing in the proxy statement/prospectus, which is part of this Registration Statement. We also consent to the reference to us under the heading "Experts" in the proxy statement/prospectus, which is part of this Registration Statement. /s/ Deloitte & Touche LLP - ------------------------- DELOITTE & TOUCHE LLP Atlanta, Georgia July 20, 1999