Chicago O'Hare's official Economy system is the airport-run budget baseline: **Lot F at about $22/day ** and **Lots G and H at about $15/day **. Unlike many private lots, these connect directly into the airport system through the Multi-Modal Facility and ATS.
This page should function as the official-value comparison point in the ORD cluster. It is where travelers decide whether the airport-controlled option is worth more than an off-airport shuttle lot.
Keep rates current and make the MMF/ATS connection the centerpiece. That is the operational difference that matters.