DTW airport wait times are not too bad for a large airport. You should arrive 3 hours before an international flight and 2 for a domestic. It's always worth checking what your airline recommends too. Nationally airport staffing levels are low so you can expect longer processing time than you may have experienced in previous years.
You can view today's estimated DTW TSA wait times above as well as see the PreCheck locations and lane openings. TSA PreCheck membership can result in much faster processing through Detroit Airport. To find out more about joining or renewing TSA PreCheck membership visit https://www.tsa.gov/precheck. You should also know that CLEAR is also available at DTW.
We do not anticipate regularly long waits to clear immigration at Detroit. If you have arrived at DTW via another connecting airport in the US you will get processed much faster than if you were arriving directly from overseas.