The size of a Quetzalcoatlus, the 2nd largest flying creature ever.

Hatzegopteryx was heavier, but quetz was overall larger iirc. You also have contenders like Arambourgiania (who I think lost the name titanopteryx, which means "titan wing", to a prehistoric fly), and Cryodrakon. All are part of the pterosaur family, Azhdarchidae, and overall were the largest animals to ever fly. Btw, for reference, Quetzalcoatlus was around 18 feet tall, which is as tall as a normal giraffe and had a 33-foot wingspan, which is the size of a 33-foot giraffe. However, it weighed around 200kg (or in that range), about the mass of a small brown bear. Hatz was pretty much the same but shorter and heavier. Also, in terms of geography, if I'm right, Quetzalcoatlus was found in North America, Hatzegopteryx, from Europe, Arambourgiania from Asia and Africa, and Cryodrakon, from South America.