To cancel a flight, you must make sure that the tickets have been ordered, and if the same happens through a travel agency, you will need to contact the agency, if it's online or over the counter, please follow the steps below but before follow the provided link for Copa Airlines Cancellation Policy.
Make sure they are on the official page
Click on Services at the top of the page in the available options
From the options above, click "Reservation Center"
You must enter your booking number or e-ticket in this field
When booking a booking number or e-ticket number, please do not write 230 or the final confirmation number. Click Continue.
You will be asked to fill in all other details as indicated and please follow the cancellation instructions.
It includes all the steps to claim for compensation, passenger selection, survey details, verification, and formulation.
Before cancellation follows the provided guide on Copa airlines cancellation policy.