NextFin News -- Colorful Guizhou Airlines has notified ticket agents that the domestic route fuel surcharge will increase significantly, starting April 5. For flights of 800 kilometers or less, the surcharge will be raised to 60 RMB, and for segments over 800 kilometers, it will be 120 RMB. Currently, the fuel fee for segments of 800 kilometers or less is 10 RMB, while for segments over 800 kilometers, it is 20 RMB. This means that in April, the domestic route fuel surcharge will increase by 50 RMB and 100 RMB respectively, resulting in a fivefold increase. Previously, the fuel surcharge for international routes had already been raised, with some routes seeing a doubling of the fee. Airlines have seen their operaitonal costs soaring since the start of the Iran war on February 28. The closure of the Stait of Hormuz, a narrow waterway for about 20% of global oil shipping, has pushed up global oil prices.