https://supportsi.hexagon.com/help/s/question/0D5Tc00000HFPDeKAP/aa-what-is-the-cancellation-policy-for-american-airlines?language=en_US

https://supportsi.hexagon.com/help/s/question/0D5Tc00000HFICxKAP/1-8667380699-american-airline-check-in-full-guide?language=en_US

https://tv-sound-monitors.philips.com/s/question/0D5TY00000NIg4j0AD/1-8667380699-american-airline-check-in-full-guide

https://tv-sound-monitors.philips.com/s/question/0D5TY00000NIptV0AT/-delta-airlines-cancellation-policy-refund-option-explained

https://tv-sound-monitors.philips.com/s/question/0D5TY00000NJ25r0AD/booking-delta-airlines-cancellation-policy-know-quickly

https://www.devex.com/people/delta-cancellation-policy-2011174

https://www.devex.com/people/delta-airlines-cancellation-2011176

https://tv-sound-monitors.philips.com/s/question/0D5TY00000NITRf0AP/18555500919-does-american-have-a-cancellation-policy-know-quickly