The Estero, Florida-based airline operates a fleet of MD-11s and B747-400s, providing transport services for logistics companies, e-commerce platforms and the US Department of Defense.
As part of the deal, which was finalised in January, Western Global has an additional purchase option.
The 777F has a range of 4,970 nautical miles and a payload of 107 tons, combined with lower fuel usage and CO2 emissions than older aircraft.
Ihssane Mounir, Senior Vice President of Commercial Sales and Marketing at Boeing says: “The addition of 777 Freighters will enable Western Global to continue its growth, providing increased capability and flexibility to its operations. These new freighters will complement its existing all-Boeing fleet and we are committed to deepening the partnership between our companies, which has existed since Western Global's inception.”