https://officialcustomerserviceportal.zohodesk.com/portal/en/kb/articles/united-refundhelp-can-you-cancel-united-flights-and-get-a-refund-complete-guide-14-8-2025
https://officialcustomerserviceportal.zohodesk.com/portal/en/kb/articles/united-helpcenter-can-you-cancel-united-flights-and-get-a-refund-complete-process
https://officialcustomerserviceportal.zohodesk.com/portal/en/kb/articles/united-refundhelp-can-you-cancel-united-flights-and-get-a-refund-refundable-or-not
https://officialcustomerserviceportal.zohodesk.com/portal/en/kb/articles/united-refundpolicy-can-you-cancel-united-flights-and-get-a-refund-quick-guide
https://officialcustomerserviceportal.zohodesk.com/portal/en/kb/articles/united-refundinfo-can-you-cancel-united-flights-and-get-a-refund-traveler-help