https://www.devex.com/people/tr-what-is-the-american-flight-cancellation-policy-2290820

https://www.devex.com/people/ua-telefono-mexico-como-llamar-a-united-airlines-desde-mexico-2290643 https://www.devex.com/people/delta-airlines-telefono-como-llamar-a-delta-airlines-en-mexico-2290617

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https://support.google.com/phoneapp/thread/315445878?hl=en&sjid=14340488365299839500-AP

https://www.devex.com/people/is-there-a-grace-period-for-klm-quick-guide-2290175

https://support.google.com/phoneapp/thread/315446081?hl=en&sjid=14340488365299839500-AP

https://www.devex.com/people/does-qatar-have-a-free-cancellation-policy-customer-faq-2289918

https://support.google.com/phoneapp/thread/315444913?hl=en&sjid=15521174509939366867-AP

https://community.spacewalkers.com/t/faq-what-is-the-cancellation-policy-through-expedia-do-you-get-a-refund-if-you-cancel-on-expedia/7416 https://www.devex.com/people/faqs-public-is-expedia-really-free-cancellation-2290530 https://www.devex.com/people/us-call-expedia-how-do-i-get-a-live-human-at-expedia-contact-services-2290622