Het festival was gepland van 14 jun tot 18 jun 2017 (4 dag(en)).
Firefly Music Festival vindt plaats in Dover, United Kingdom. Hier is het volledige adres van het festival: The Woodlands of Dover International Speedway, Dover
The Weeknd, Muse, twenty one pilots, Alan Walker, Weezer, Glass Animals, Kaleo, Bob Dylan, Illenium, Rainbow Kitten Surprise, Thirty Seconds to Mars, Fletcher, Franz Ferdinand, Stick Figure, Flume.
De populairste genres en subgenres van de vorige editie waren:
pop
electronic
rock
indie
alternative
indie rock
indie pop
alternative rock
electronica
electropop
rnb
experimental
acoustic
electro
new wave
synth-pop
trip hop
dance
dubstep