https://www.devex.com/people/ib-airline-can-i-cancel-my-iberia-ticket-within-24-hours-help-2461342

https://www.devex.com/people/s-ep-steps-what-is-the-american-cancellation-fee-2461048

https://www.devex.com/people/cancellation-guide-how-long-does-delta-give-you-to-cancel-2460618

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