Frontier Airlines PHL Terminal +1-888-839-0502 from lily lopez's blog

Check-in at Frontier Airlines PHL Terminal is expedited by self-service kiosks or the counter. The procedure is quick, but since there are additional baggage fees, it is best to check in early to prevent last-minute delays. Passengers should anticipate conventional processes, such as the 3-1-1 liquid rule and taking off their shoes and belts, when TSA executes security screenings. For expedited screening, TSA PreCheck is accessible. Although it takes some preparation, the check-in and security process is often easy.