This video shows the effect of angle of attack on flow structures/patterns over a nonslender flying wing using the surface flow visualization technique. Flow-field over the flying wing can be categorized as attached flow without leading-edge vortex, separated flow without vortex breakdown, and separated flow with vortex breakdown on the flying wing. It reveals symmetrical flow structures about the root-chord with increasing angle of attack. The wave-like surface flow structure moves upstream on the flying wing, with increasing angle of attack. Also, the wave-like surface structure moves downward and decreases in size with increasing Reynolds number on the flying wing.