"When you look globally, that New York to Southern Florida route is far and away number one," said Patrick Gallagher, senior vice president, head of sales at NetJets, which offers fractional ownership and rental of private business jets. "It's mainly a function of population and the concentration of wealth."
Indeed, a study from Wealth-X found that New York and Florida account for one-fifth of "ultra-high-net-worth" Americans, or those who are worth $30 million or more and would be more likely to fly private. California accounts for another 20 percent of this group.
In Europe, NetJets' private-jet traffic also follows the money. The most common route is between London and Geneva. Flights from London to Nice, France, were the second-most common, followed by Paris to London.
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The fastest-growing route in private-jet traffic, according to a separate 2013 analysis from NetJets and Knight Frank, was Nice to New York, followed by Maiquetia, Venezuela, to Miami, and then Dubai to London.
Overall, the U.S. remains the world's largest private-jet market, accounting for 60 percent of the world's private-jet originators and destinations. Europe is the second-largest market, followed by the Middle East, with China and Brazil close behind.