Firefly is returning to The Woodlands in Dover, DE from September 23-26, 2021 and the festival has announced that this year's headliners are Billie Eilish, The Killers, Tame Impala and Lizzo.
Pop and alternative worlds will collide at Firefly Festival as Diplo, Nelly, Glass Animals, Phoebe Bridgers and more are also on the multi-day lineup.
Due to the pandemic, the festival was cancelled last year for the first time since it's conception in 2012.
Check out the full lineup below! Tickets go on sale this Friday at 10AM.