In 2026, the title for the most expensive aircraft brand depends on whether you are looking at commercial or private aviation. For Commercial Airliners, Airbus currently holds the top spot with the A350-1000, which has a list price exceeding $360 million. Historically, the Airbus A380 was more expensive (over $445 million), but it is no longer in production. For Private Business Jets, Bombardier and Gulfstream are the "prestige" brands with the highest price tags. The Bombardier Global 8000, the world's fastest business jet, retails for approximately $78 million. Its direct competitor, the Gulfstream G800, follows closely at $72.5 million. However, if you include "Head of State" style conversions, Boeing wins the category: a "Boeing Business Jet" (BBJ) based on a 747-8 or 777X airframe can cost over $400 to $500 million once the custom luxury interior (gold fittings, theaters, and bedrooms) is installed, making it the most expensive brand of civil aircraft in existence.