Spirit Airlines Terminal DFW, specifically in Terminal E. To guarantee every passenger's safety, security at this terminal adheres to TSA (Transportation Security Administration) standard operating protocols. Arriving at least two hours before takeoff is recommended to give security screening time—which varies depending on the time of day and volume of traffic at the airport—enough time. Although there are several TSA security checkpoints at DFW Terminal E, processing is expedited, albeit wait times may increase during busy hours.