The superhero drama - debuting in the US on October 7 - stars Grant Gustin as Barry Allen, the fastest man alive, reported Ace Showbiz.
The poster art features Gustin as Flash, while the strapline reads: "Discover what makes a hero."
The show will air on The CW in the US.
The DC Comics adaptation is a spin-off from hit series 'Arrow', which already airs on Sky1.
Multiple crossovers between the two series are planned, with 'Arrow' star Stephen Amell (Oliver Queen) making a cameo in 'The Flash's pilot.