Luton Airport looks set to be sold for around £400m.
The airport handled 9.6 million passengers last year and will be, subject to regulatory approval, Aena's fifth largest airport.
Aena executive chairman Jose Manuel Vargas said: "We aim to substantially build up Luton in consultation with all its stakeholders."
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Increasing cloud and rain overnight. Blustery and cold tomorrow.
Events are taking place in Cambridge, Norwich, Colchester, Southend and Lowestoft today, to mark Holocaust Memorial Day.
Cloud will increase through the day with rain arriving by dawn.