FlexJet described what makes the G450 the ultimate business jet: "Consumed with efficiency and yet capable of entertaining for hours and is perfectly suited to be a sanctuary of productivity or ...

Sibilla said some of its private planes, like the Gulfstream G450, automatically staff a "cabin server," which is Flexjet's term for a flight attendant. The Praetor 600 doesn't offer servers.

The deal is valued at up to $7 billion at current list prices, marking the largest order in the history of Flexjet, which has ...