Gulfstream G800 vs Gulfstream G650er

In category, both the Gulfstream G800 and Gulfstream G650ER are ultra-long-range, large-cabin business jets, but the G800 is the newer-generation model positioned as Gulfstream’s flagship for maximum range and updated systems, while the G650ER is the prior flagship known for proven performance and speed in long-haul operations. On range, the G800 is designed to fly farther, with a published maximum range of about 8,000 nautical miles, compared with roughly 7,500 nautical miles for the G650ER, giving the G800 more nonstop city-pair capability and additional operational margin. On passenger capacity, both are typically configured for around 14 to 19 passengers depending on layout, with similar large-cabin comfort; in practice, neither is defined by a higher seat count so much as by mission profile and cabin customization. Overall, the G800 differentiates itself primarily through longer legs and newer avionics and cabin options, while the G650ER remains a benchmark ultra-long-range jet with strong real-world dispatch reliability and performance.