Belfast International Airport (BFS), also known as Aldergrove after its original RAF designation, is Northern Ireland's largest and busiest airport. Located approximately 21 kilometres northwest of Belfast city centre in County Antrim, the airport handles around 6 million passengers annually and serves as the primary gateway to Northern Ireland for business, leisure, and visiting friends and relatives (VFR) traffic. It is a major easyJet base, with additional services from Ryanair, Jet2, British Airways, Aer Lingus, and a range of charter operators.
Belfast International occupies a unique position in UK aviation. Northern Ireland's geography means the airport serves a catchment area that extends deep into the Republic of Ireland — passengers from Donegal, Sligo, and Monaghan often find Belfast International more convenient than Dublin Airport, 160 kilometres to the south. This cross-border dynamic, combined with strong demand for GB-NI connectivity and European holiday routes, gives Belfast International a diverse traffic mix that is quite different from comparably sized airports in England or Scotland.
If your flight at Belfast International was delayed by more than 3 hours, cancelled without adequate notice, or you were denied boarding, you are entitled to up to £520 (€600) in compensation under UK261. This guide covers everything you need to know about claiming from Northern Ireland's largest airport.



