+1~????-????????????-????????????-???????????????? Contact{US~++1~????-????????????-????????????-????????????????] How late can I cancel a American flight? American provides a 24-hour cancellation policy. If you want to cancel your flight you are able to do so free of charge within 24 hours of the date of your reservation. https://www.40plusdoubledutchclub.org/forum/general-discussion/proper-guide-what-is-american-cancellation-policy-know-details