Flying somewhere this summer on vacation? Well, unless something changes drastically soon in the global airline industry, you should expect to pay more for airfare. Not to mention that the planes will be packed. The reason is twofold… What’s Driving Aircraft Shortages?First, there is a rebound in flying. The International Air Transport Association (IATA) reported on April 4 that world demand in February finally surpassed 2019 levels. Global demand – measured by revenue per mile flown by passengers – jumped almost 22% in February from a year earlier, IATA said in a news release. That puts traff…