Staffing shortages among air traffic controllers are causing flight delays and cancellations at US airports.  Additionally, staffing shortages among TSA agents are resulting in longer lines at airport security at some US airports.  Please be sure to monitor your flight’s status and allow extra time for airport security.  A delayed flight’s departure time can change, so, in all cases, arrive at the airport 2 hours prior to the flight departure time for domestic flights and 3 hours for international flights.