Festival dijadwalkan dari 14 Jun hingga 18 Jun 2017 (4 hari).
Firefly Music Festival berlangsung di Dover, United Kingdom. Berikut adalah alamat lengkap 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.
Genre dan sub-genre yang paling populer dari edisi sebelumnya adalah:
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