People aged 65 or over can get half-price tickets so long as they have some ID proving their age (ID card or other official document so long as it bears a photograph and their date of birth).
You have to prove the ticket is yours and you have the right to the discount by showing an official ID document or certified photocopy of it
The discount is 25% of the international Lusitânia Comboio Hotel, Sud Expresso and Celta services if you are aged 60 or over.
Alfa Pendular and Intercidades prices rounded up to the next 50 cents.
See here suggestions for your outings.
CP Services: Lisbon urban trains | Oporto urban trains | Coimbra urban trains | Alfa Pendular | Intercidades | Regional and InterRegional | Sud Expresso | Lusitânia Comboio Hotel (Lisbon/Madrid) | Celta (Oporto/Vigo)