What is the most expensive private jet in the world?

The world's most expensive private jets are not the usual business aircraft from Gulfstream or Bombardier, but wide-body jets designed for airlines and converted into flying residences for heads of state, royal families or great fortunes. The most cited case is the Boeing 747-8, the largest passenger aircraft the company has built: its list price reached about 418 million dollars in the 2019 list, the last one Boeing made public before it stopped publishing official prices; the model's page on its website no longer includes any figure, so there is no verifiable reference price today. On that base, a completely custom cabin is then installed, with bedrooms, meeting rooms and sometimes a gym, work that can take more than two years and is entrusted to specialized VIP completion shops. Known owners include Middle Eastern royal families and major Asian businesspeople, although the buyer's identity is rarely made public.

The final price of one of these aircraft is not in the fuselage, but in the interior: every panel, every electrical system and every piece of furniture is designed and certified individually for that specific aircraft, a process that is much more artisanal and regulated than finishing a production business jet. Boeing groups this activity under its Boeing Business Jets program, which offers private versions of both its single-aisle and wide-body aircraft. That combination of an extremely expensive base aircraft and a custom-built cabin is what places a private 747-8 or 787 well above any Gulfstream G700 or Bombardier Global 7500, the most expensive production business jets, whose list price is an order of magnitude lower.