Car travel is best for the majority of the state, easily accessed by interstates. Numerous highways closer to Chicago are tollways, but the rest of the highways are free. EZ-Pass users from the eastern U.S. can use their transponders on the Illinois Tollway at all toll booths. The price for EZ-Pass and I-Pass Users is half the cash price listed on the sign at the toll booth.
Train travel is another way to get around Illinois. Metra train lines serves Chicago and the surrounding suburbs and Amtrak serves significant portions of the rest of the state. While Metra trains usually run on time, Amtrak trains are more prone to running late. Check with Amtrak before making the trip.
Greyhound buses, Megabus discount buses and it's sister bus company, Coach USA, serves many Illinois locales. Chicago and the nearby suburbs are served by the PACE bus system and many large Illinois cities have bus systems of their own.