What are our travel options from Lisbon airport to cascais , bus, train taxi ??? We are family 5 with some luggage??? Thanks
We are family 5 with some luggage? Take a private transfer... you can also wait in the taxi rank for a big enough car to arrive to the front, expect to pay around 60/70€ (bigger car extra fee, plus luggage fee, plus tolls on the highway).
There's no bus to cascais, there's a train departing from Cais do Sodré train station. To reach this train take either the Aerobus, the metro (with a change at Alameda) or a taxi...
You might want to get a quote from lisbontaxi.com. They are a reputable company with good service.
However, as pointed out, it will be expensive. You can also take the Aerobus from the airport to Cais do Sodré (last stop), then take the train to Cascais. It’s long (likely about two hours for both) but less expensive.