Money and communications:
There is a full service bank, ATMs, bureau de change facilities in a number of locations and a post office. Wireless Internet is available at various locations throughout the airport.
Eating and drinking:
There is a variety of restaurants, bars, fast-food outlets and cafés.
There are numerous shops, including duty-free shops in each terminal.
Trolleys are available at all terminals. There are lost property desks staffed by the Chicago Police Department on the upper levels of all terminals.
There is a medical centre, AED units (defibrillators), baby-change facilities, a play area and a 24-hour interfaith chapel.