Sites for booking flights and car rentals:
orbitz.com
travelocity.com
expedia.com
priceline.com

Airport info:
There's not a direct airport in Cave-In-Rock,IL. There are airports within a few hours that can get you to the Gathering of the Juggalos quicker than driving. Here are some options below.

Nashville International Airport
One Terminal Drive
Nashville, TN 37214-4114
www.flynashville.com
Estimated drive time to Gathering: 2 hours, 36 minutes

Lambert St. Louis International Airport
10701 Lambert International Blvd.
St. Louis, MO 63145-0212
www.lambert-stlouis.com
Estimated drive time to Gathering: 3 hours, 22 minutes

Louisville International Airport
600 Terminal Drive
Louisville, KY 40209
www.flylouisville.com
Estimated drive time to Gathering: 3 hours, 31 minutes

Evansville, IN
Evansville Regional Airport
7801 Bussing Dr
Evansville, IN 47725
www.evvairport.com
Estimated drive time to Gathering: 1 hour, 49 minutes