Na tech letenkach bude nekolik ruznych tax, mam dojem ze pouze jeden typ je refundovatelny. Kdyz pujdes na ryanair.com tak v informacich je na to link.
Na pravy strane v tomhle textu jsou dva linky:
http://www.ryanair.com/en/questions/can-i-cancel-my-reservation-before-travel-and-do-i-need-to-notify-ryanair-if-i-am-not-travelling/

Can I cancel my booking before travel?
All Ryanair flights are changeable but cannot be cancelled, please note customers don""t need to notify us if they are unable to travel .
Customers who are unable to use their outbound flight can still travel on their return flight.

If you do not travel on your booked flight the air fare, fees and charges are non-refundable but you may apply in writing within one month of the date of travel for a refund of the Government Tax paid.