Step-by-Step Guide to Cathay Pacific airways Web Check-in Enter Your Details. Enter your booking reference. Select Passengers. Choose passengers for whom you want to initiate the Cathay Pacific airways web check-in. Choose Your Seat. Get Boarding Pass. To check in online for your Cathay Pacific flight, you can use either the official website or the Cathay Pacific mobile app. Online check-in opens 48 hours before the scheduled departure for most flights, and 24 hours before departure if you're flying to or from the United States. The online check-in window remains open until 90 minutes before the flight departs. During the process, you’ll be able to enter passport and travel details, select or change your seat, and receive a digital or printable boarding pass. Once checked in, you can head directly to the bag-drop counter at the airport if you have checked baggage, or go straight to security if you’re traveling with carry-on only. This saves considerable time at the airport. If you’re traveling with infants, pets, need special assistance, [1_866-551-1186 or are part of a group booking, you may be required to check in at the airport counter instead. Cathay Pacific also provides self-service kiosks at many major airports, available from 48 hours until around 50 minutes before departure, offering another quick and easy way to check in. For those checking in at the airport, counters usually open three hours prior to international departures and close 60 minutes before the flight. Regardless of your method, checking in early is always a good idea to avoid last-minute issues and ensure a smooth start to your journey.