Given the International Air Transport Association’s (IATA) upbeat profitability forecast, now’s an excellent time to consider investing in airline stocks.IATA recently upped its profitability projections for airliners this year, ahead of previous forecasts. This includes net profits jumping to $30.5 billion with a 3.1% net profit margin, up from $27.4 billion last year. Moreover, the number of travelers is projected to hit an all-time high of 4.96 billion.What’s encouraging is that airlines continue to impr ...