Delta Air Lines, one of the largest US carriers, made a strategic decision to retire its Boeing 777 fleet in 2020. This move marked the end of an era for Delta, as the Boeing 777 was a significant part of its operations since it joined the fleet in 1999. The aircraft played a crucial role in Delta's expansion into ultra-long-haul markets, launching new routes to Asia and Australia.
Despite its popularity among passengers and crew, the Boeing 777 was not cost-efficient for Delta. The COVID-19 pandemic presented an opportunity for the airline to rationalize its fleet. Older widebodies like the 777 required more fuel and higher maintenance costs compared to newer alternatives. As COO Gil West stated, "The 777 has been a reliable part of Delta’s success since it joined the fleet in 1999."
Delta decided to replace its Boeing 777s with Airbus A350s and A330neos, which offer better fuel efficiency and lower emissions. According to Planespotters.net, Delta acquired 40 Airbus A350s alongside its existing fleet of Airbus A330s. Replacing the Boeing 777 with these newer models is expected to reduce fuel burn by approximately 21% on certain flights.