Garibaldi Street, one of the main roads leading to the airport, was closed yesterday for about a year for rebuilding.
The works are part of a project, announced last month, of major road upgrading as part of the TEN-T Trans-European Transport Network.
Other road works in the same project include Council of Europe Road, also in Luqa, Flagstone Wharf and Triq l-Ghassara tal-Gheneb in Marsa, Marfa Road from Mellieha to Cirkewwa and Mgarr Road, Gozo, between Xewkija and Victoria.
The works on Council of Europe and Garibaldi streets are projected to cost €10m and will be completed in a year, a spokesman for Transport Malta said.
85% of the cost of the projects will be forked out by the EU.
The projects will include new utility services and boundary walls, landscaping, street furniture and safety features.
Alternative routes have been prepared for people wishing to go to the airport.