Emirates offers online check-in starting 48 hours before the scheduled departure time and it closes 90 minutes prior to the flight. Passengers can check in online via the Emirates website or mobile app, select seats, add baggage, and obtain their boarding pass during this period. For flights to and from the United States, boarding passes are issued only 24 hours before departure due to regulatory requirements, although online check-in opens 48 hours prior. If you have checked baggage, you must drop it off at the airport baggage drop counters after completing online check-in. Online check-in is not available for certain bookings such as codeshare flights operated by other airlines or flights with travel restrictions, in which case airport check-in is required. Emirates airport check-in counters usually open three hours before departure and close 60 minutes before the flight. Passengers are advised to arrive early to allow enough time for baggage drop, security, and boarding. Using the online check-in option helps avoid long lines and speeds up the airport process. In summary, Emirates online check-in opens 48 hours before departure except for U.S. flights where boarding passes are available 24 hours before, and closes 90 minutes before the flight. Airport check-in is always available if online check-in is not possible or preferred.