Chicago, Illinois is a final export destination in the USA. *Some packages can leave through New York as well. On average it will be there for 3-7 days being processed (depending on the time of year and back ups) and then is on the way to your country where it will get processed the same way and then sent to your local post office. Average transit times are 2-6 weeks.
Please be sure to check your tracking every so often though in case it stops being scanned for 20 DAYS in a row. If that happens then you want to file a claim for a lost package with your Route Insurance to get a replacement sent out.