As of 2015, the check-in options for Delta flights include online, mobile app, airport kiosk and airport curbside. The online check-in option allows printing of boarding passes within 24 hours of the flight departure.
The Fly Delta app is free and available for smart phones. It allows check in, access to eBoarding Pass and payment for bags. Passengers can also use their smart phones to visit the Delta website and use the check-in option to send the eBoarding Pass to their mobile devices.
Airport kiosks require a SkyMiles card, passport or credit card to access the check-in feature on the kiosk screen. The curbside option allows passengers to check in using photo ID, confirmation number and eTicket.