Well... the end is near for the 747. Last year, about Feb, we went to 1/2 a shipset a month. Boeing is thinking on killing the program after 5 decades. As of today, no US Airline operate the 747 Jumbo Jet.
Queen of the Skies, Delta Airlines' last 747-400. It went on a tour at the end of December, and on Wednesday made its final flight to a boneyard in Arizona.
On Wednesday, Delta Airlines flight 9771 flew from Atlanta to Pinal Airpark in Arizona. It wasn't a full flight—just 48 people on board. But it was a milestone—and not just for the
two people who got married mid-flight—for it marked the very last flight of a Boeing 747 being operated by a US airline. Delta's last scheduled passenger service with the jumbo was actually late in December, at which point it conducted a farewell tour and then some charter flights. But as of today, after 51 long years in service, if you want to ride a 747 you'll need to be traveling abroad.
https://arstechnica.com/cars/2018/01/delta-sends-the-last-us-passenger-747-into-retirement/