Airfoils including an airfoil body having leading and trailing edges and root and tip regions, wherein an aftward direction is from the leading edge toward the trailing edge and a radially outward direction is from root to tip, a forward-flowing serpentine flow path formed within the airfoil body defined by a first serpentine cavity, a second serpentine cavity, and a third serpentine cavity, wherein the first serpentine cavity is aftward of the second serpentine cavity, and the second serpentine cavity is aftward of the third serpentine cavity, a tip flag cavity extending aftward from proximate the leading edge to the trailing edge along the tip region, and at least one shielding cavity located between a portion of the forward-flowing serpentine flow path and an external surface of the airfoil body.