The Philly Airport security wait times are pretty average for an airport of this size. Plan on arriving 2 hours before a domestic flight and 3 hours for an international flight and you should have plenty of time to get to your gate without having to rush. It would be wise to factor in the time of your flight, day of the week, seasonality and traffic when deciding when to get to Philadelphia Airport.
If you are driving to the airport please be aware that the on-airport lots are often full. You can pre-pay for your Philadelphia Airport parking with Park 'N Fly and guarantee your space.
Your PHL security wait times should be reduced considerably if you have TSA PreCheck membership. You can view today's estimated TSA PreCheck wait times at PHL above as well as lane locations and open status. Joining TSA PreCheck membership can help you get through Philly Airport and other participating airports much faster. To find out more about joining or renewing TSA PreCheck membership visit https://www.tsa.gov/precheck. Be advised that CLEAR is also available at PHL.
We don't have much feedback about the wait times at PHL for those who need to get processed by immigration. If catching a connecting flight at Philadelphia or it is your direct location it can take a little while to pass through security and wait times are likely to vary greatly, but if you have already connected elsewhere in the states and have already been processed by the TSA do not expect lengthy delays.
For further details about the wait times at Philadelphia Airport, TSA PreCheck, checked baggage limits, lost and found and more visit https://www.phl.org/.