Illinois Art Fairs Calendar
Schaumburg Prairie Art Festival
If you are a resident of Illinois or an adjoining state or if you'll just be visiting, the Illinois Arts Council in association with the Chicago Artists' Coalition has an online Illinois Art Fair Directory. You can search the directory for Illinois art fairs by city and/or date and/or search term.
This handy tool can be found at http://www.caconline.org/illinoisartfairs.asp.
The picture above is a photograph taken at this year's Schaumburg Prairie Art Festival which occurs each May.