https://www.devex.com/people/does-lufthansa-allow-flight-changes-2460795

https://www.devex.com/people/quick-refund-is-expedia-actually-fully-refundable-2460342

https://www.devex.com/people/can-you-cancel-with-expedia-and-get-a-refund-2454613

https://www.devex.com/people/can-you-get-a-full-refund-on-expedia-within-24-hours-2453157

https://www.devex.com/people/what-is-the-refundable-option-on-expedia-2446157

https://www.devex.com/people/qatar-airways-devuelve-dinero-2430217

https://www.devex.com/people/como-puedo-conectarme-con-alguien-en-qatar-airways-2426835

https://www.devex.com/people/a-como-llamar-a-qatar-airways-desde-mexico-2413551

https://knowt.com/note/01d8947c-9404-464e-bd58-ae7813a4d2b5/Flights-Guide-AAWhat-day-is-the-cheape

https://thelinuxforum.com/forum/general-linux-forums/general-linux-discussions/11644-%E3%80%90hawaiian-process%E3%80%91how-late-can-i-cancel-a-hawaiian-airlines-flight