United Airlines has quick and easy web check-in options, and passengers can easily complete web check-ins. Here are the full steps on how to check in using United Airlines, whether on their site or mobile application: United Airlines Website Check-In: 1. Visit the Website or Open the App: the web check-in will begin either on the United Airlines website or downloading the mobile app. 2. Timings: United Airlines will provide you with availability of your flight for an online check-in over 24 hours before the scheduled flight. Sign in: log into a United Airline account if using the website and sign in to the app. 3. Information on flight: enter your flight details such as booking reference/conformation number to access the booking. 4. Choose the right seat: during the check-in process, passengers will be given the choice to select their seat; select the suitable seat. 5. Request Special Services: passengers can select special services like people with disability or dietary requirements. 6. Have a boarding pass ready: a customer can print their boarding pass at home or select a mobile boarding pass which will be available on the cellphone/ tablet. 7. Identification: remember to present a valid government identity card with details of flight and confirmation. In addition, kiosks will be available in an airport or customer service options. 8. Check in time at airport: a customer is advised to do online within the length of 60 minutes. Airport kiosk or Customer Service: the passengers will check-in in a booth with their self-booking or with customer service personnel in case a passenger failed to check in online pass the time recommended. Important Note: it is an advise to do check in online to avoid possible last-minute rush. Airport considerations may require more processes to complete if an online check was not done at the earliest. In conclusion, The web check-in allows passengers to easily do their check-in using their websites and easily pick their seats and select special services.