Coming from Luqa - when you get to the airport's main roundabout where there is the Mc Donalds sign, turn towards Kirkop. Proceed through the tunnel under the runway, and take a right turn at the next roundabout towards the ST Microelectronics factory. Drive for another 500 metres past the factory until you come to another roundabout which has exits for Zurrieq, Qrendi, and Mqabba. Take the 4th exit to the right into a seemingly disused road, and follow the signs for Malta Air Traffic Services (MATS) until you come to a gate manned by a soldier. Stop the car there and park in the small clearing, and contact the person you were planning to meet so you can be picked up. Have your ID card/passport ready.
In case you worry about getting hopelessly lost, and thus feel the urge to enter the co-ordinates into your car's GPS, here they are: N 35˚ 51' 2.5",   E 14˚ 28' 53.6"
(Click here for Google Earth locator file.)