Qatar Airways Cancellation Policy, Fee and Refund

If the ticket is cancelled more than 24 hours after booking with Qatar Airways, the flight cancellation fee will apply to you. You will be charged a Qatar Airways cancellation fee based on the nature of your ticket, including whether it is refundable or non-refundable. 

Depending on your fare type, a cancellation fee may go up to 150 dollars. The airline will charge you more if you cancel your ticket offline.