 In February 2018, UPS exercised its option to purchase the additional 14 747 freighters, making UPS the largest operator of the 747-8 worldwide.As part of the option, UPS also purchased 4 additional Boeing 767-300F freighters, delivered by 2022.The introduction of the 747-8F fleet allows UPS to introduce its longest-ever flight, flying nonstop from Louisville (Worldport) to its gateway in Dubai International Airport (nearly 6,700 miles).