https://www.devex.com/people/faq-can-you-cancel-an-expedia-hotel-and-get-a-refund-2416619

https://www.devex.com/people/is-expedia-free-cancellation-really-free-2439702

https://www.devex.com/people/uick-steps-provision-are-aeromexico-tickets-transferable-2439326

https://www.devex.com/people/fully-refundable-how-late-can-you-cancel-a-delta-refundable-flight-2439743

American Airlines cancellation policy

https://www.tripadvisor.co.uk/ShowTopic-g1-i10702-k15061251-How_to_speak_to_someone_on_expedia_Care_By_Chat_Email_Phone-Air_Travel.html

https://www.devex.com/people/como-hago-una-pregunta-en-expedia-2439645

https://tinyurl.com/bdnursyy

https://www.devex.com/people/sw-air-what-is-the-southwest-cancellation-policy-2439698

https://www.devex.com/people/does-charge-for-cancellation-2439508