Officials of Spain's airline regulator said the aircraft landed at the Madrid-Barajas Airport without problems Sunday and the 160 passengers weren't hurt, ThinkSpain reported.
The nature of the technical difficulty wasn't announced.
The plane was traveling from Paris to Tenerife Island, one of the Canary Islands.
The emergency landing Sunday was the latest in a series of problems plaguing the discount airline, which has headquarters in Dublin. On Saturday, a Ryanair plane made an emergency landing in Barcelona after an engine failed.
On Thursday, turbulence on forced a flight from Dusseldorf to Palma de Mallorca to make an emergency landing, injuring two crew members and a passenger, ThinkSpain said.
A loss of cabin pressure Sept. 7 brought down oxygen masks on a flight from Madrid to Gran Canaria shortly after the plane took off, forcing the pilot to return to the airport.