From wartime training base to Northern Ireland's busiest international aviation hub
In short: Belfast International Airport began as a 1917 Royal Flying Corps training site before evolving into a major commercial gateway. Today, it serves millions of passengers annually, having navigated military transitions, privatisation, and significant infrastructure investments to become the primary air travel link for Belfast and the surrounding region.
Established in 1917 within the parish of Killead, the site originally served as a Royal Flying Corps training establishment during the First World War. Following the conflict, it remained active as an RAF station. The Second World War proved transformative for the facility, as a major works programme replaced four existing runways with two long paved strips, creating the fundamental layout that defines the airport today. For decades, the airfield operated in tandem with military interests, including the RAF Aldergrove base, which eventually closed in 2008.
Civilian aviation at the site dates back to 1922, though scheduled passenger services did not begin until 1933 via Midland & Scottish Air Ferries. The airport's role as the region's primary civil hub was solidified in 1963, when flights were transferred from Nutts Corner. Over the following decades, the airport underwent extensive modernisation, including the construction of new terminals, piers, and cargo centres. By 1983, it was renamed Belfast International, reflecting its capacity to handle the largest civil aircraft in service at the time.
Ownership has shifted significantly over the years, moving from public control to privatisation in 1994, and eventually to its current operator, Vinci Airports. Recent investments, such as a £100 million programme opened in 2025, have introduced advanced security technology that removes the need for passengers to separate liquids or electronics. Despite its growth, the airport has faced challenges, including the discovery of a bomb in a long-stay car park in 2010 and the suspension of various long-haul routes. Today, it remains Northern Ireland's busiest airport, handling over 6.7 million passengers in 2024.
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- Summary by Intellect · source: Belfast International Airport
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