Boarding areas are located outside baggage claim. Reservations necessary when traveling from the hotel back to the airport. Taxis Taxis are located outside baggage claim. At O Hare, the boarding area is at the lower level of Terminal 4. The Orange Line is the Midway Airport connection.
Schedules vary depending on time of day.
Pace suburban commuter buses connect with the CTA buses and trains and accept CTA transfers. Rental Cars Alamo , Avis , Budget , Dollar , Hertz and National have offices at O Hare. Avis , Budget , Dollar , Hertz and National are on site at Midway. The major intercity train station is Chicago Union Station at 210 S. Canal St. It is Amtrak s hub and national transfer station and is served by the majority of the system s trains.