https://t.ly/Z1FPU

https://support.us.edu/hc/en-us/community/posts/27076528486679--D-o-e-s-U-n-i-t-e-d-h-a-v-e-a-2-4-h-o-u-r-c-a-n-c-e-l-l-a-t-i-o-n-p-o-l-i-c-...

https://support.us.edu/hc/en-us/community/posts/27076193680407--1-860-615-9000-%CF%89%D0%BD%CE%B1%D1%82-%CE%B9%D1%95-%D1%82%D0%BD%D1%94-%CE%...

https://communicators.ncsu.edu/blog/united-policy-at-60-615-9000-can-i-cancel-my-united-ailines-fligh