No doubt Shannon Airport is not as busy as it used to be.
All transatlantic flights were required to land in Shannon but this is no longer the case, resulting in a major drop in traffic.
But there are still regular flights to and from some major European and American destinations including Alicante, Birmingham, Boston, Bristol, Edinburgh, Faro, Frankfurt, Fuerteventura, Ibiza, Krakow, Lanzarote, London, Malaga, Manchester, New York, Philadelphia, Tenerife Toronto, Warsaw and more.
So Shannon is holding its own and constant efforts are being made to improve the passenger experience and to acquire new destinations.
And every now and then visitors to Shannon Airport are surprised with a stunning performance like the Irish Dancer Flash Mob (video from https://loveireland.com/