Dassault Falcon 10x vs Dassault Falcon 6x vs Gulfstream G650er vs Gulfstream G800

The Dassault Falcon 10X and Gulfstream G800 sit in the top “ultra-long-range flagship” category, aimed at the longest nonstop missions with large-cabin comfort. The Falcon 10X is positioned to offer roughly 7,500 nautical miles of range, while the G800 targets about 8,000 nautical miles, making it the longest-range option in this group. The Gulfstream G650ER is also an ultra-long-range flagship, with about 7,500 nautical miles of range, closely comparable to the Falcon 10X in mission reach though from an earlier Gulfstream generation. The Dassault Falcon 6X is best described as a “large-cabin long-range” jet rather than the absolute top-range class. It trades some range for a big cabin and efficiency, offering about 5,500 nautical miles. In passenger capacity, all four typically fly in the low-to-mid teens in real-world executive layouts. The Falcon 6X commonly seats around 12–16, the Falcon 10X about 12–16 (often up to ~19), the G650ER about 11–18, and the G800 similarly around 12–19 depending on configuration.