You can check in for your British Airways flight starting 24 hours before the scheduled departure through their official website or mobile app. This online check-in option is convenient and allows you to select seats, add baggage, and get your boarding pass digitally, which you can save on your phone or print at home. For flights departing from the United States, online check-in opens slightly earlier, at 23 hours before departure, to meet regulatory requirements. Online check-in closes 60 minutes before most flights, so it’s important to complete the process within this window to avoid delays. If you prefer to check in at the airport, British Airways provides self-service kiosks and staffed check-in counters. These typically open 3 hours before international flights and 2 hours before domestic flights, closing about 60 minutes before departure. Passengers traveling with infants, requiring special assistance, or with complex itineraries may be required to use the staffed counters. It’s recommended to arrive at the airport at least 2 to 3 hours before international flights and 90 minutes before domestic flights to allow enough time for check-in, baggage drop, security screening, and boarding. Boarding gates usually close 30 minutes before departure, so punctuality is key. British Airways’ online check-in system is user-friendly, supports multiple languages, and allows passengers to upload travel documents ahead of time, especially useful for international flights with visa or health requirements. Many travelers find online check-in reduces stress and waiting times at the airport. Early check-in also improves your chances of securing preferred seats and handling itinerary changes smoothly. For airport check-in, staff are available to assist, and self-service kiosks help speed up the process by printing boarding passes and baggage tags quickly. In summary, British Airways check-in opens 24 hours before departure online, closing 60 minutes prior to the flight, while airport counters and kiosks open 2 to 3 hours before departure. Following these timelines ensures a smooth, hassle-free start to your journey with British Airways.