By plane:  Travelers frequently arrive at Cascais via the Lisbon Portela Airport.  This airport is located relatively close to downtown Lisbon, approximately thirty kilometers away from Cascais.  More information about the airport can be learned at http://www.ana.pt/en-US/Aeroportos/li....

From Lisbon :  Travelers landing in Lisbon can proceed to Cascais via rental car or train.  Many travelers opt for car rental, taking the A5 Highway which is the most direct route from Lisbon.  Some travelers who rent cars opt to take the EN 6 Highway instead because, though it takes longer, it offers the more scenic view between Lisbon and Cascais.  For a truly scenic view, travelers should forego the rental car and take the train which runs along the coast between the two locations.  Trains at least every 20 minutes, seven days a week, from Lisbon's Cais do Sodre station. The journey takes about 40 minutes, one-way fare is €2.30. Cais do Sodre can be reached from the airport by using the Aerobus https://www.yellowbustours.com/en-GB/... or the metro http://metro.transporteslisboa.pt/eng...

For those planning to spend a day in and around Lisbon, Sintra and Cascais there is now available a one day Euro 15 travel combi travel pass which allows one to take a train to either Sintra, Cascais or Estoril and use SCOTTURB buses to make connections between the Stations.

There are no direct buses between Cascais and Lisbon city centre. Train service is quick and efficient. The Vimeca and Scotturb bus companies operate in and around Cascais.