By Lisa Barrington SEOUL (Reuters) – More manufacturers are seeking to fly their products in the next few weeks as attacks on Red Sea shipping force them to find alternate routes, logistics firms say, a potential boon for a sector dealing with muted post-pandemic demand and overcapacity. The Red Sea, which leads to the Suez canal, lies on the key east-west trade route from Asia’s manufacturing hubs to Europe and onto the east coast of the Americas. About 12% of world shipping traffic accesses the Suez Canal via its waters. But more than two months of attacks by Yemen’s Houthi militia on ships …