To check in for a Delta flight, you can use several convenient methods including online check-in, the Fly Delta mobile app, airport kiosks, or curbside check-in where available. Online check-in opens 24 hours before the scheduled departure time and closes generally 30 minutes before domestic flights and 60 minutes before international flights. You begin by visiting the Delta website or launching the mobile app, where you will enter your confirmation number, SkyMiles number, or credit card to access your booking. Once your flight details appear, you can confirm passenger information, select or change your seat, add any checked baggage, and pay for extras like upgrades or priority boarding. After completion, you can download a digital boarding pass, email it to yourself, or add it to a mobile wallet for easy access at the airport. If you have checked luggage, drop it off at the designated bag drop area upon arrival. If you choose not to check in online, you may use Delta’s self-service kiosks at the airport. These allow you to check in by entering your confirmation code, scanning your passport, or using your SkyMiles membership. The kiosk will print your boarding pass and bag tags, which you can attach before proceeding to the baggage drop counter. Another option at select U.S. airports is curbside check-in, where a Delta staff member will assist you outside the terminal with your boarding pass and baggage. This service usually opens two to three hours before departure and may have fees depending on location. For all check-in methods, Delta recommends arriving at the airport two hours before domestic departures and three hours before international ones to allow sufficient time for security checks and boarding. Boarding gates typically close 15 minutes before scheduled departure, and if you have not checked in or dropped your bags by the required time, you may be denied boarding. Special attention is needed for flights involving partner airlines or codeshare bookings, as separate check-in procedures may apply. Also, passengers requiring additional assistance, those traveling with pets, unaccompanied minors, or with international travel documents should check in at the airport counter to verify travel eligibility and complete additional procedures. After completing check-in and security, proceed to your departure gate and monitor screens or announcements for boarding group numbers and any changes. Delta uses a zone-based boarding system, which is indicated on your boarding pass. Staying aware of your boarding time and gate location will help ensure a timely departure. Regardless of the check-in method you choose, having all necessary documents such as identification, visa, or COVID-related health documents ready before arrival will help make your journey smoother and avoid last-minute complications.