According to oceanservice.noaa.gov:
While the Earth appears to be round when viewed from the vantage point of space, it is actually closer to an ellipsoid. However, even an ellipsoid does not adequately describe the Earth’s unique and ever-changing shape. Our planet is pudgier at the equator than at the poles by about 70,000 feet.
Is the earth round?
My opinion? Yes. It is. If it were flat, then while on a plane, you could see the edge of it.