The amount of time you need for a connecting flight in Chicago depends heavily on which airport you’re using and whether your flights are on a single ticket or separate tickets.
Chicago has two major airports:
O’Hare International (ORD): A massive, busy hub for United and American.
Midway International (MDW): A smaller, primarily Southwest Airlines hub.
You cannot transfer between O’Hare and Midway for a connection. They are 20+ miles apart with heavy traffic. The advice below assumes you are connecting at the same airport.
General Minimum Recommended Connection Times
At O’Hare (ORD)
- Domestic to Domestic (same airline): 60 minutes (absolute minimum, 75-90 is less stressful).
- Domestic to International / International to Domestic: 90-120 minutes (you must clear immigration and customs on arrival, then re-check bags).
- International to International: 90 minutes (you usually don’t clear US customs, but terminals are far apart).
- Different airlines / separate tickets: Add a minimum of 60 extra minutes (you may need to change terminals, re-check bags, and go through security again).
At Midway (MDW)
- All connections (mostly domestic): 45-60 minutes is often sufficient due to its smaller, single-terminal layout. For peace of mind, aim for 60+ minutes.
Critical Factors to Consider
- Single vs. Separate Tickets:
- Single Ticket: The airline believes their minimum time is feasible. If you