“The Flash” definitely hit the ground running with its premiere Tuesday night.
The CW’s latest comic-book adaptation, which stars Grant Gustin as the red-clad, super-speedy hero, debuted to 4.54 million total viewers, making it the network’s most-watched series premiere in more than five years, since the season kickoff of “The Vampire Diaries” in 2009.
In the 18-49 demographic most important to advertisers, the “Flash” premiere performed particularly well, especially for the younger-skewing network, scoring a 1.8 rating/6 share in the demo — also a network high since the “Vampire Diaries” premiere.
Across the entire history of The CW, “The Flash” stands as the third most-watched and highest-rated series premiere, bested only by the aforementioned “Vampire Diaries” premiere and the series debut of “90210.”
Combined with the 9 p.m. Season 10 premiere of “Supernatural,” which had a four-year series best in total viewers with 2.79 million, the “Flash” premiere pushed the network to its most-watched Tuesday night in more than six years, since the night of the “90210” premiere in Sept. 2008. Overall for Tuesday, The CW averaged 3.66 million total viewers.