If you plan arriving at the airport using your own vehicle, you may use one of the following motorways, depending on your point of origin. Listed below are rudimentary directions taking you to the “2ª Circular /Segunda Circular”, the Lisbon ring road that leads to the airport.
From the North: Take the A1 Motorway (from Oporto to Lisbon) to the 2ª Circular From the Torres Vedras area: Take the A8 Motorway to the CRIL (IC-17) to the 2ª Circular From the South (crossing the Tagus River): Take the Vasco da Gama Bridge to the 2ª Circular or take the 25 de Abril Bridge to the Eixo Norte/Sul (North/South Axis) to the 2ª Circular From Cascais/Estoril: Take the A5 Motorway to the CRIL (IC-17) to the 2ª Circular From Sintra/Amadora: Take the IC-19 to the 2ª Circular (entering from the south) or take the IC-19 to the IC-17 to the 2ª Circular (entering from the north)