The Gulfstream 650ER. This model is capable of flying 7,500+ nautical miles at Mach 0.85+. It can carry up to 19 passengers and two crew. Gulfstream claims its cabin is superior in soundproofing the cabin. It utilizes 16 large cabin windows to maximize natural light. It also utilizes a unique pressurization system to keep passengers refreshed on long-range trips. The Gulfstream G650ER set the record for the longest non-stop flight by a purpose-built business jet in April 2019 by flying 8,379 nmi (15,518 km) from Singapore to Tucson with a cabin to match its incredible flight statistics.