The cheapest flight to Dublin you can get by boooking 14 days before departure.
The most popular airlines on the route Porto - Dublin: Ryanair (FR), Iberia (IB), Aer Lingus (EI).
The cheapest flights you can book on the route Francisco de Sa Carneiro (OPO) - Dublin Airport (DUB).
Direct flights last about 2h 20min.
Direct flights available 4 days a week - Monday, Wednesday, Thursday, Friday.
Direct flights: Ryanair (FR).