Cathay Pacific’s online check-in service is designed to make the travel process smoother and more convenient, allowing passengers to check in well ahead of their scheduled departure. For most flights operated by Cathay Pacific, online check-in opens 48 hours before departure and remains available until 90 minutes prior to the scheduled flight time. This gives travelers a full two days to confirm their booking, select seats, update travel details, and download or print their boarding passes. However, there is one key exception that travelers should be aware of—for flights to or from the United States, online check-in begins only 24 hours before the flight departs due to U.S. government regulations. This difference is important to note, especially for those who frequently travel on transpacific routes, as it can affect planning and airport arrival times. The check-in process itself is simple and user-friendly. Passengers can visit the official Cathay Pacific website or use the mobile app. By entering the booking reference, ticket number, or Marco Polo Club membership number along with the passenger's last name, travelers can access their booking details. Once logged in, users can confirm their flight, choose or change seats, add frequent flyer details, and complete check-in. Afterward, boarding passes can be downloaded, emailed, or saved to a mobile device for quick access at the airport. Passengers traveling with only carry-on luggage can go directly to security, bypassing the check-in counter, which helps save time. Those with checked bags can still check in online and simply drop their luggage at the airport's designated bag drop counter before the deadline. Cathay Pacific typically advises passengers to arrive at least 3 hours before international flights to ensure enough time for security checks, document verification, and boarding. The airline also provides self-service kiosks at select airports for those who prefer to print boarding passes or baggage tags at the terminal. It's important to check the exact check-in window for your route to avoid delays or missed deadlines. The airline clearly outlines these times on its website and provides automatic reminders via email or app notifications. Travelers should also be aware that if they are traveling with infants, special service needs, or pets, online check-in might not be available and check-in must be completed at the airport. In addition, passengers should ensure their travel documents, such as passports and visas, are valid and match the booking details to avoid issues. To summarize, Cathay Pacific online check-in is available 48 hours before departure for most flights, and 24 hours before departure for flights to and from the U.S., closing 90 minutes before departure. Taking advantage of online check-in not only saves time but also allows travelers to secure preferred seats and avoid airport queues. For the best travel experience, passengers are encouraged to check in early, download the Cathay Pacific app, and stay updated with flight alerts and boarding instructions.