EXHIBIT 23.1 INDEPENDENT AUDITORS' CONSENT We consent to the use in this Registration Statement of United Parcel Service, Inc. on Form S-1 of our report dated February 8, 1999 (relating to the consolidated financial statements of United Parcel Service of America, Inc.), appearing in the prospectus, which is part of this Registration Statement. We also consent to the reference to us under the heading "Experts" in the 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-1 of our report dated July 20, 1999, appearing in the prospectus, which is part of this Registration Statement. We also consent to the reference to us under the heading "Experts" in the prospectus, which is part of this Registration Statement. /s/ Deloitte & Touche LLP DELOITTE & TOUCHE LLP - --------------------------- Atlanta, Georgia July 20, 1999