https://riversideca.gov/sites/default/files/webform/musueum/covid/united-airlines-customer-service-phone-numbers-a-complete-2025-guide.pdf.pdf

https://spp.umd.edu/sites/default/files/webform/rawlings_undergraduate_leadershi/_sid_/how-do-i-talk-to-a-live-person-at-united-airlines-call-1-877%E2%87%8C%C2%BB%E2%87%8C245%E2%87%8C9984-for-247-support.pdf

https://spp.umd.edu/sites/default/files/webform/rawlings_undergraduate_leadershi/_sid_/how-to-get-a-refund-from-united-airlines-call-1-877%E2%87%8C%C2%BB%E2%87%8C245%E2%87%8C9984-for-quick-help.pdf

https://spp.umd.edu/sites/default/files/webform/rawlings_undergraduate_leadershi/_sid_/how-to-get-a-refund-from-united-airlines-call-1-877%E2%87%8C%C2%BB%E2%87%8C245%E2%87%8C9984-for-quick-help.pdf

https://spp.umd.edu/sites/default/files/webform/rawlings_undergraduate_leadershi/_sid_/united-airlines-customer-service-phone-numbers-a-complete-2025-guide.pdf.pdf