Looking for a fun-filled activity for the thrill-seekers in your family? Daredevils can experience the adrenaline-rush of skydiving free-fall without strapping on a parachute. August just happens to be the least windy month in the Windy City, so iFLY Indoor Skydiving has taken matters into their own hands to ensure the need for wind speed is fulfilled. Enjoy $20 off Monday-Thursday throughout August in honor of this forecast phenomenon.