it would take about 5,000 balloons to lift the average person into the air but how many would it take to lift your house in the movie up the house is lifted with just 10,000 balloons but that actually wouldn't work in real life you see a typical house weighs about 100,000 lb and each balloon Can Only Hold about half of an ounce using that math you would need just about 4 million balloons to lift a typical house