The complex cost €46 million and was constructed by FCC, the Spanish environmental services, infrastructure and water group.
In his speech, President Santos noted that this new aviation infrastructurre reflected the current the transformation the country is going through.
He noted that it was also a symbol of modernity that will bring peace, equality and education to all Colombians, which he claims is the main aim of the current government.
Santos went on to say that the new management centre at the airport will easily be able to cope with the increase in aircraft movements at El Dorado, which is now capable of accommodating 90 flights every hour compared to 58 before.
He added that this was an example of the competitiveness that Colombia needs as a country.
The president also celebrated the recent elimination of visa requirements for Colombian citizens to travel to Europe.
The new 90 metre high control tower is now the tallest and best equipped tower in Latin America, according to FCC, which reveals that the air traffic control systems have been developed to "guarantee the best air navigation service in the region".
FCC has extensive experience in highly complex airport projects all over the world, argubaly its most noteworthy projects have included Terminal 1 at Barcelona's El Prat airport, T4 terminal at Madrid-Barajas and the platform at Riga Airport in Latvia.
FCC's presence in Colombia dates back to the 1980s with the construction of the Medellín Metro.