Checking in online with an e-ticket is a straightforward digital process that typically opens 24 to 48 hours before your flight. First, visit the airline's website or mobile app and look for the "Check-In" or "Manage Booking" tab. You will need to enter your 6-character Reservation Code (PNR) or your 13-digit E-ticket number, along with your last name. Once logged in, you can confirm your flight details, select or change your seat, and declare any checked baggage. You may also be asked to provide or verify your passport information for international travel. After completing these steps, the system will generate a digital boarding pass containing a QR code. In 2026, it is standard to save this pass to your Apple or Google Wallet so you can bypass the airport check-in counters and head straight to security if you have only carry-on luggage. If you have bags to check, you can usually use a "Self-Service Bag Drop" by scanning your e-ticket at a kiosk.