The Flat Earth Theory

How does a plane flying from New York to London end up having the same times either way they fly? Whether flying east or west, the plane takes the same time to get there?! The plane takes the same time to get to it's destination whether flying from New York to London, or from London back to New York! Right there, this proves that there is no ball earth spinning at a 1000mph eastward as the scientific elite tell us!