La relación de la aerolínea francesa con España era tanta, que hasta llegaron a establecer una filial (Regional Líneas Aéreas) que volaba entre Porto y Madrid y continuaba a Lyon con un Saab 340.
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Even if the predecessor of the regional carrier HOP! finally ended orbiting around Air France, there was a time when Regional Airlines worked closely with Iberia; It was part of the frequent flyer program of the Spanish company, it feeded European traffic to Iberia intercontinental flights from Madrid and both airlines were sharing codes in many flights.
The relationship of the French airline with Spain was such that it even came to establish a subsidiary which flew between Porto and Madrid and then to Lyon, using a Saab 340.