Soccer balls should be deflated by moistening an inflation needle and carefully inserting it into the valve. After the needle is inserted, gently apply pressure to the ball until it is deflated. Remove the needle and tape it to the deflated ball. The deflated balls can be stacked to save space. Each deflated soccer ball will weigh about 1 lb (0.45 kg).
Pro Tip: Pack all supply items so they can be easily located and removed from your luggage upon arrival and make drop-off one of the first things you do a when you are arriving at your destination.