The news was posted on the band's official Twitter page.
"Pleased to report that we're playing at September's @iHeartRadio Music Festival. See you in Vegas," the post read.
Coldplay comprises of Chris Martin, Jonny Buckland, Guy Berryman and Will Champion.
Other names set to perform at the festival are Kanye West, Sam Smith, The Who, Demi Lovato, The Weeknd, Lil Wayne, Fall Out Boy, Hozier, Blake Shelton, Janet Jackson, Nick Jonas among others.