Lucky Lady II is a United States Air Force Boeing B-50 Superfortress that became the first airplane to circle the world nonstop.

Following the refueling near Luzon, Philippines, the refueling tanker encountered poor weather conditions and crashed on March 1, 1949, killing all nine crew aboard; the accident report was altered to state the tanker was on a routine training mission to keep the accident from casting a bad light on the Lucky Lady II's successful circumnavigation.

LeMay said the mission showed that the Air Force could send bombers from the United States to "any place in the world that required the atomic bomb".

[3] Another B-50 named Global Queen had taken off on February 25 with the same mission, but was forced to land at Lajes Air Base in the Azores due to an engine fire.

Kline, completed the 20,000 mi (32,000 km; 17,000 nmi) flight in 15 days, after making eight stops along the way and flying for 103 hours and 50 minutes.

[3] Lucky Lady III was one of three Boeing B-52 Stratofortresses that made the circumnavigation in January 1957 as part of Operation Power Flite, flying from Castle Air Force Base in California and completing the 24,325 mi (39,147 km; 21,138 nmi) flight in 45 hours and 19 minutes (at an average ground speed of 536 mph (863 km/h; 466 kn)) with the assistance of aerial refueling from KC-97 Stratofreighters.