There’s a train leaving every 30 minutes from Philadelphia International Airport to the 30th Street Station in the city center, every day from 5:07 am to 12:30 am. SEPTA (Southeastern Pennsylvania Transportation Authority) operates all trains, with stops at all terminals.A one-way ticket costs $6.95 (approximately C$ 9.32), and you can buy it at one of the SEPTA kiosks near each terminal platform. You can pay in cash, debit card or credit card.