No.Have the landing lights been turned on yet?
You can find an article on the net of Brazil's biggest weekly magazine "VEJA" titlled: "Aeroporto de Natal: a 15 meses da Copa, 85% da obra está por fazer."
This means, 15 months to go for the worldcup, till now 85% of the construction still has to be done. (only 15% is ready).
Including recent photographs, (there is nothing there).
The new owner and builder " Inframérica" now declares that it's in the contract, airport must be ready in 2015.
The old airports should be used for the 2014 worldcup.