"Today's #FridayFeeling? how about LIT because everyone's fave host, @RyanSeacrest is officially BACK this season!," the show's Twitter feed said.
Seacrest hosted the show when it ran 2002-16 on FOX and he returned in 2018 when it moved to ABC.
"American Idol has been my home for 17 seasons and I can't wait to return to the stage," said Seacrest in a statement. "It's the greatest gift to be able to play a part in discovering new talent with a franchise that has been such a relevant part of American culture for so many years."