Looking to watch Green Lantern: Emerald Knights? Lauren Montgomery's 2011 Adventure film is available through several streaming and digital platforms. It's currently streaming on HBO Max, HBO Max Amazon Channel, Cinemax Amazon Channel, and Cinemax Apple TV channel. Rental options start at $3.99, available on Apple TV, Prime Video, YouTube, and Google TV. If you'd like to own it digitally, you can buy Green Lantern: Emerald Knights starting from $12.99 on Apple TV, Prime Video, YouTube, and Google TV. The film holds a 67% audience score.