If you're planning to fly with Cathay Pacific, it’s important to know how early you can check in online to save time at the airport and secure your seat. Cathay Pacific online check-in opens 48 hours before the scheduled departure time for most flights, which is more generous than many airlines that only allow check-in starting 24 hours before departure. This early window gives passengers more flexibility to plan ahead, choose their preferred seats, and manage any last-minute updates to their booking. The online check-in closes 90 minutes before the flight’s departure, so it’s recommended to complete the process well in advance. You can check in online through the official Cathay Pacific website or the Cathay Pacific mobile app. The process is quick, requiring just your booking reference and last name. Once checked in, you can download your mobile boarding pass, email it to yourself, or print a paper copy. Passengers who have completed online check-in and are traveling with only carry-on luggage can head straight to airport security, bypassing the check-in counters completely. If you have baggage to check, Cathay Pacific offers dedicated bag drop counters, which open about three hours before departure and close 60 minutes prior to takeoff. This service is available at major airports like Hong Kong International Airport, London Heathrow, New York JFK, and others served by Cathay. However, online check-in may not be available for certain passengers, such as those requiring special assistance, traveling with pets, unaccompanied minors, or those flying on code-share partner flights operated by other airlines. In such cases, you must check in at the airport counter. For group bookings or if there is a visa verification requirement, you might also be asked to visit the check-in counter for document checks. Travelers in First Class, Business Class, or Marco Polo Club members enjoy priority check-in and boarding, regardless of whether they checked in online or not. But even for Economy Class travelers, checking in online as soon as the 48-hour window opens gives a better chance of selecting ideal seats and reduces stress on the day of travel. Cathay Pacific also sends check-in reminders via email or mobile app notifications, so make sure your contact details are up to date in your booking profile. To avoid delays and ensure a smooth experience, arrive at the airport at least three hours before departure for international flights and at least 90 minutes early for regional flights, even if you've checked in online. In conclusion, Cathay Pacific allows online check-in starting 48 hours before your flight’s departure, closing 90 minutes before takeoff. This generous check-in window helps travelers save time, get preferred seats, and prepare early for their journey. To enjoy the full benefits, check in as soon as the 48-hour window opens and make sure all travel documents are complete to avoid any airport hassles.