You can check in for your British Airways flight starting 24 hours before the scheduled departure time through their official website or mobile app. This convenient online check-in option is available for most flights and allows you to select or change seats, add baggage, and receive your boarding pass digitally. For passengers departing from the United States, the online check-in window opens slightly earlier at 23 hours before departure due to specific regulations. Online check-in closes 60 minutes prior to departure for most flights, so it is important to complete the process within this timeframe to avoid any issues. At the airport, British Airways offers self-service kiosks and staffed check-in counters. These kiosks typically open 3 hours before international flights and 2 hours before domestic flights, closing around 60 minutes before departure. Staffed check-in counters usually open around 3 hours before departure and close 45 to 60 minutes prior to the flight depending on the airport and destination. Passengers traveling with infants, requiring special assistance, or holding certain ticket types may be required to check in at the staffed counters. British Airways recommends arriving at the airport at least 2 to 3 hours before international flights and 90 minutes before domestic flights to allow sufficient time for check-in, baggage drop, security screening, and boarding. Boarding gates generally close 30 minutes before departure, so arriving early ensures you do not miss your flight. The airline’s online check-in system supports multiple languages and allows passengers to upload required travel documents ahead of time, which is particularly helpful for international travel involving visas or health certificates. Many travelers find that checking in online reduces stress and waiting times at the airport, streamlining their overall travel experience. Early check-in also provides the opportunity to secure preferred seating or make any necessary itinerary adjustments before arriving at the airport. For those who prefer to check in at the airport, British Airways provides friendly and efficient staff ready to assist. Self-service kiosks are especially helpful for quick check-ins and baggage tagging, minimizing time spent at counters. In summary, British Airways check-in opens 24 hours before departure online (23 hours for US departures) and closes about 60 minutes prior to the flight. Airport counters and kiosks open a few hours before departure, offering multiple options to suit different traveler needs. Following these check-in timelines and arriving early ensures a smooth, hassle-free start to your journey with British Airways.