Book British Airways Tickets with Slingholidays British Airways is the national airline of the UK. In terms of fleet size, it is also the largest airline in the country. The airline is based in Waterside, Harmondsworth, not far from its main hub at London Heathrow Airport. Along with the Spanish national airline, Iberia, it forms the International Airlines Group (IAG), the third-largest airline group in the world. The airline was founded on March 1974 and presently has a fleet size of 273 aircraft that include 67 Airbus A320-200s, 43 Boeing 777-200ERs and 41 Boeing 747-400s. It has scheduled flights to 160 destinations in different parts of the globe. A founding member of the Oneworld airline alliance, British Airways has code sharing agreements with numerous airline companies from around the world. Executive Club and Avios, its frequent-flyer programs, offer numerous flight travel benefits to its regular passengers. Check In In order to avoid long queues at the airport terminals, you may go for online check-in option available at the official website of British Airways. The online check-in begins 24 hours prior to the scheduled flight departure where you may just enter the mandatory details and select your flight seats. Then you could print your boarding pass or save it on your mobile if you are doing it using your mobile check-in. Web check-in facility is available till 4 hours prior to the scheduled flight departure. With several years of experience, our travel consultants will offer you a good insight about the destinations and other provisions concerning your travel. So grab the opportunity of your dream travel at special fares with Slingholidays. Book your British Airways flights with Slingholidays and get the best deals through our Price Match Policy.