British Airways allows online and mobile check-in starting 24 hours before departure and closing 1 hour before long-haul and 45 minutes before short-haul flights. Airport check-in desks open 3 hours before long-haul and 2 hours before short-haul flights. Self-service kiosks at major airports typically open 6 hours before departure and allow passengers to print boarding passes and bag tags before proceeding to bag drop. Bag drop closes 60 minutes before long-haul and 45 minutes before short-haul departures. At London Heathrow Terminal 5, an overnight bag drop service is available from 6 PM to 9 PM for flights departing before 1 PM the next day. Passengers must be at the boarding gate no later than 30 minutes before departure, and British Airways recommends arriving at the airport at least 2 hours before European flights and 3 hours before long-haul flights to allow time for check-in, security screening, and boarding. If the first flight is operated by a partner airline, check-in must be completed according to the partner’s rules. Passengers traveling with pets, infants, unaccompanied minors, or requiring assistance should check in at the airport counter. Boarding passes can be obtained digitally or printed during check-in. For all flights, passengers should complete check-in and baggage drop within the designated time frames to ensure timely boarding and avoid cancellation of travel.