https://www.devex.com/people/delta-airlines-cancellation-policy-2016111

https://communitysandbox.more4apps.com/help/s/question/0D5Pu00000JjNqOKAV/connect-can-icancel-my-united-flight-without-penalty-

https://tinyurl.com/mryn55es

https://communitysandbox.more4apps.com/help/s/question/0D5Pu00000JjBvuKAF/%F0%9D%95%8B%F0%9D%95%A3%F0%9D%95%92%F0%9D%95%A7%F0%9D%95%96%F0%9D...

https://communitysandbox.more4apps.com/help/s/question/0D5Pu00000Jj5s4KAB/18888291117-how-late-can-i-cancel-a-united-flight-

https://communitysandbox.more4apps.com/help/s/question/0D5Pu00000JivMrKAJ/can-i-18888291117-cancel-my-united-flight-without-penalty-

https://communitysandbox.more4apps.com/help/s/question/0D5Pu00000JjCQHKA3/ua-18888291117-what-is-united-airlines-cancellation-policy

https://www.honor.com/uk/club/topicdetail/topicid-3625074400329729/

https://www.devex.com/people/delta-airlines-cancellation-policy-refund-guide-2015749

https://support.clouditude.com/help/s/question/0D57800000WYrkuCAD/can-i-ancel-my-united-flight-without-penalty-?language=en_US