The World Cup has sparked a boom in the private aviation industry, with jets crisscrossing North America to carry wealthy fans to watch their teams. This year's tournament is jointly hosted by the US, Canada, and Mexico. With 48 teams playing a total of 104 matches across 16 host cities, it's the biggest World Cup yet. Bookings to and from host cities were up 68% over last year, NetJets, the world's largest private aviation firm, told Business Insider earlier this month. The company expected