How UPS will deliver millions more packages than FedEx today - Yahoo Holiday season in the United States is show time for United Parcel Service (UPS) and FedEx—respectively, the world’s number one package deliverer and largest cargo airline. With online retailers already posting huge numbers for the season, both shipping magnates are expecting big numbers for the holiday season. FedEx CEO Frederick Wallace Smith revealed Wednesday that Dec. 17 was its busiest day ever, handling 19.8 million shipments. That number still pales in comparison to the 28 million packages that UPS will deliver on Thursday, Dec. 20, its own busiest day of the year. On an average day, UPS handles 15.8 million packages. FedEx, by contrast, averages north of 3.4 million packages per day. The scale difference also shows up clearly in the financials. In their last reported fiscal years, FedEx raked in $26.5 billion in revenue (for the year ending May 2012) compared to the $53.1 billion UPS boasted (for the year ending Dec. 31).