If the Philadelphia airport were to shut down for 24 hours, how long it would take to get back to running like normal is a complex question that depends on many factors. However, we can make some estimates and assumptions to arrive at a rough answer. First, we need to consider what it means for an airport to be "running like normal." Does this mean that all flights are on time, all gates are open, all staff are present, and all systems are functioning perfectly? Or does it mean that the airport is simply operational, with most flights able to depart and arrive on schedule? Assuming the latter, we can estimate that it would take at least a few days for the airport to return to normal operations. This is because even a 24-hour shutdown can create a backlog of flights and passengers that may take some time to clear. Additionally, airport staff may need time to catch up on missed work, and any damage or maintenance issues that occurred during the shutdown may need to be addressed. However, this timeline could be extended or shortened depending on a variety of factors, such as the severity of the shutdown, the efficiency of the airport's staff and systems, and any external factors that may impact airport operations (such as weather or air traffic control). Overall, the timeline for getting the Philadelphia airport back to running like normal after a 24-hour shutdown is difficult to determine with certainty, but we can estimate that it would likely take at least a few days to clear the backlog and return to normal operations.