What is largest flying bird alive today?

If you're going by weight, it's generally believed that the Kori bustard in Africa is the largest. They can weigh up to 40-42 pounds. If you're going by wingspan, it's the wandering albatross, which has a wingspan of up to 12 feet. The largest bid of prey is the Andean condor. They average about 24 pounds and have a wingspan of about 10 feet.