Price for a cab from Sintra to Cascais

Uber is quoting me less than 15€ right now! So, 20€ for a cab maybe?

I spent a week in Sintra, early summer 2019 and we used Uber to get everywhere we wanted to get to including Cascais and it was quite inexpensive. We did not use cabs, had no issues with Uber. I even kept the contact details of our driver in Porto and friends have used him since too.

Thank-you. We will use Uber!

You might want to consider downloading the Bolt app. Bolt uses the same drivers as Uber and is usually a bit less expensive. For new users they usually give good discounts for the first few trips.