https://connecticut.forums.rivals.com/threads/a-complete-guide-1-866-51-313-to-qatar-airways-flight-change-policy.10053/

https://connecticut.forums.rivals.com/threads/a-complete-guide-1-866-51%F0%9D%9F%9E-31%F0%9D%9F%9E3-to-qatar-airways-flight-change-policy.10053/