a VirtualTourist member
Approximately how much would it cost for a taxi from Lisbon airport to Estoril?
I have seen 50 Euros mentioned elsewhere. There are any number of licensed transfer companies eg www.transfer4me.com who quote around that figure. That's for up to four people, so about 12.50 Euros each if there's four of you.
By bus to Cais do Sodre station then train it will cost 5.30 Euros in all.
This site is only in portuguese www.antral.pt/simulador.asp but it calculates the average cost of a taxi between 2 directions in the country. For your case (luggage included) it indicates around 35€, but with heavy traffic it can be a little bit more.