One and two-day passes are available via Ticketfly.com. People can also buy them via Groupon, which is offering a limited amount of presale single-day tickets, officials said.
This year's Riot Fest will be held in Douglas Park after a coalition of Humboldt Park residents demanded its removal from the neighborhood earlier this year.
See a full lineup for all three days here.
PHOTOS: Riot Fest 2015 Chicago lineup