British Airways check-in opens 24 hours before departure for online check-in through their website or mobile app. This is the earliest option for most passengers, allowing seat selection, boarding pass download, and smoother airport experience. Airport check-in desks generally open 3 hours before long-haul international flights and 2 hours before short-haul European flights. At London Heathrow and Gatwick, long-haul check-in may open up to 4 hours in advance during peak times. For business class and first-class travelers, dedicated check-in counters may open earlier with faster service. Passengers without checked luggage can proceed directly to security after online check-in. Airport check-in timing may vary at international locations, with most opening 2–3 hours before departure. Passengers with special needs or unaccompanied minors should arrive earlier within the standard suggested window. British Airways does not allow airport check-in too far ahead of the scheduled time, so arriving excessively early may not offer access to bag drop or security. Connecting flights or codeshare bookings may follow different partner rules, and local airport policies may influence exact timings. To ensure a smooth journey, check-in 24 hours before departure online, arrive at the airport within the recommended time frame, and confirm check-in desk hours based on your departure location and flight type. This ensures you meet British Airways check-in requirements and avoid delays or boarding issues. Early check-in gives travelers better seat choices and helps avoid last-minute airport stress. Whether traveling economy, premium economy, business, or first class, using British Airways online check-in maximizes convenience and minimizes waiting time. Stay updated on check-in changes by monitoring your booking and flight status for any operational alerts or time-sensitive requirements. British Airways check-in policies support both flexibility and efficiency, with the earliest available access provided online exactly 24 hours before your flight.