Here You can find a list of airlines which operated in Dublin airport.
Brussels-Zaventem - Aer Lingus, Ryanair
Ostend–Bruges - TUIfly
Plovdiv - Ryanair
Sofia - Ryanair, American Airlines
Billund - Ryanair
Copenhagen Kastrup - Ryanair, Scandinavian Airlines System
Tallinn - Ryanair
Helsinki Vantaa - Finnair, Japan Airlines, British
Rovaniemi - Ryanair
Tampere Pirkkala - AirBaltic
Ajaccio Corsica - Corse-Mediterranee
Basel Mulhouse Freiburg - Ryanair
Bordeaux - Aer Lingus, Ryanair, American Airlines
Carcassonne - Ryanair
Figari Corsica - Corse-Mediterranee
Grenoble - Ryanair
Lyon - Aer Lingus
Marseille Provence - Ryanair
Nantes - Ryanair
Nimes - Aer Lingus
Nice - Ryanair
Paris Beauvais - Ryanair
Paris Charles de Gaulle - Aer Lingus, AirFrance, Delta, City Connexion Airlines, Kenya Airways, China Eastern Airlines, AirAustral, JetBlue, AeroMéxico, AirSerbia, Saudi Arabian, FedEx Express, Europe Airpost, Arubaanse Luchtvaart
Paris Orly - Transavia Holland, Formosa Airlines, Transavia France
Toulouse Blagnac - Ryanair, Aer Lingus, Thomsonfly, TUIfly
Athens - Ryanair, Aegean
Birmingham International - Aer Lingus, Ryanair, British
Bournemouth International - Ryanair
Bristol - Aer Lingus, British, Ryanair
Cardiff Wales - Ryanair, Aer Lingus
East Midlands - Arubaanse Luchtvaart, Ryanair, UPS
Exeter International - British, Aer Lingus
Guernsey - Aurigny Air Services
Isle of Man - Aer Lingus, British
Leeds Bradford - Ryanair, Aer Lingus, British
Liverpool John Lennon - Ryanair
London City - British
London Gatwick - Ryanair, Aer Lingus
London Luton - Ryanair
London Stansted - Ryanair, FedEx Express, Pacific Wings, AirAfrique
Manchester - Ryanair, Aer Lingus, AirAfrique, British, United Airlines, American Airlines
Newcastle - Aer Lingus, Ryanair, British
Newquay Cornwall - Aer Lingus, British
Southampton - Aer Lingus, Eastern Airways
London Heathrow - British, Aer Lingus, American Airlines, AirCanada, United Airlines, Japan Airlines, QatarAirways, Kenya Airways
Amsterdam Schiphol - KLM Royal, Aer Lingus, Ryanair, Delta, Kenya Airways, Xiamen Airlines, China Eastern Airlines, JetBlue, City Connexion Airlines
Eindhoven - Ryanair
Maastricht Aachen - Alitalia Express
Donegal - Aer Lingus, British
Kerry - Ryanair
Shannon - UPS, Aer Lingus
Keflavík - Icelandair
Bologna - Ryanair
Genoa - Ryanair
Milan Bergamo - Ryanair
Rome Fiumicino - Aer Lingus, Ryanair, JetBlue
Turin - Ryanair, Thomsonfly, TUIfly
Venice Marco Polo - Aer Lingus, Ryanair, American Airlines
Verona - Aer Lingus, Ryanair, American Airlines
Almaty - Arubaanse Luchtvaart
Astana - Arubaanse Luchtvaart
Zagreb - Ryanair
Riga - Ryanair, AirBaltic
Kaunas - Ryanair
Palanga - Ryanair
Vilnius - Ryanair
Malta Luqa - Ryanair
Chisinau - AirMoldova, Travel Service
Belfast International - British, Aer Lingus
Belfast City - American Airlines
Oslo Gardermoen - Norwegian AirShuttle, Scandinavian Airlines System
Innsbruck - TUIfly
Klagenfurt - Ryanair
Salzburg - Ryanair, Aer Lingus
Vienna Schwechat International - Ryanair, Aer Lingus
Wroclaw - Ryanair
Bydgoszcz - Ryanair
Gdansk - Ryanair
Katowice - Ryanair
Krakow - Ryanair
Lodz - Ryanair
Lublin - Ryanair
Poznan - Ryanair
Rzeszow - Ryanair
Szczecin - Ryanair
Warsaw Modlin - Ryanair
Faro - Ryanair, Aer Lingus
Madeira Funchal - Ryanair
Porto - Ryanair
Lisbon Portela - TAP Portugal, Ryanair, SATA International, Aer Lingus
Bukarest Otopeni - Ryanair
Cluj-Napoca - Ryanair
Sibiu International - Ryanair
Aberdeen - Aer Lingus
Edinburgh - Ryanair, Aer Lingus
Glasgow International - Ryanair, Aer Lingus
Stockholm Arlanda - Scandinavian Airlines System
Geneva - Swiss International, Aer Lingus, Thomsonfly
Zürich - Swiss International, Aer Lingus, JetBlue
Bratislava - Ryanair
Kosice - Ryanair
Alicante - Ryanair
Barcelona El Prat - Aer Lingus, Ryanair, Formosa Airlines, Iberia, LAN Airlines
Lanzarote Arrecife - Aer Lingus, Ryanair, Thomsonfly, TUIfly
Las Palmas Gran Canaria - Ryanair, Aer Lingus, Thomsonfly, TUIfly
Madrid Barajas - Iberia Express, Aer Lingus, Ryanair, British, LAN Airlines, Formosa Airlines, Iberia
Malaga Costa del Sol - Ryanair, Aer Lingus
Oviedo Asturias - Ryanair
Seville - Ryanair
Tenerife South - Ryanair, Aer Lingus, TUIfly, Thomsonfly
Valencia - Ryanair
Prague - Ryanair
Izmir Adnan Menderes - SunExpress
Istanbul Atatürk - Turkish, IndiGo
Budapest - Ryanair, Aer Lingus, American Airlines
Paphos International - Ryanair
Düsseldorf - Aer Lingus, JetBlue, Eurowings
Frankfurt am Main - Austrian, Lufthansa, All Nippon Airways, Singapore Airlines, AirIndia Limited, Aer Lingus
Frankfurt Hahn - Ryanair
Hamburg - Ryanair, Aer Lingus
Hannover Langenhagen - Alitalia Express
Köln Bonn - UPS, Ryanair, Aer Lingus, JetBlue
Memmingen - Ryanair
Munich - Aer Lingus, Lufthansa
Nuremberg - Ryanair