10. Justice League of America
Worn by: Kenny Johnston
The third live-action adaptation of The Flash came in the 1997 TV movie Justice League of America. It was originally envisioned as a pilot for CBS to launch a JLA series but it wasn't successful in doing so, and has since made the rounds on television as a TV movie instead.
Its budget was limited and that was once again clear from its costumes. The Flash's suit was a bit of a mixed bag. While the cowl was a huge improvement over the Legends of the Superheroes one from 19 years prior, the suit wasn't that much of an upgrade. Yes, it was marginally better, but not exactly two decades-worth of an upgrade.
A skin-tight red bodysuit, it too was hampered by a cartoonishly large lightning bolt symbol on its chest. The white circle was too big for the suit and the bolt was even bigger, displaying itself across the whole chest. Sure, it took away from the cheap look of the suit, but it was just so unnecessarily big - which felt like a downgrade from the far superior suit used in the '90s TV show.
But yes, the cowl was solid, showing actual character in its design that elevated it above cosplay. The suit had a lot of shortcomings, but the mask was not one of them, as it borrowed what worked from the Batman movies and showed us that improvements can be made.