Travel on the Gulfstream G450, the ultimate business jet for maximum comfort an. The Gulfstream G450 is a top large cabin, business jet with a long range of 4,350 nautical miles. Seating between 12 to16 passengers, it features an advanced Plane-View cockpit, and is powered by two Rolls-Royce engines. This private jet can cruise at an altitude of 45,000 feet, making it a reliable choice for luxury air travel.