Https://riversideca.gov/sites/default/files/webform/musueum/covid/United-Airlines%C2%AE%EF%B8%8F-USA-Contact-Numbers-Complete-2025-Support-Guide.pdf https://riversideca.gov/sites/default/files/webform/musueum/covid/United-Airlines%C2%AE%EF%B8%8F-USA-Contact-Numbers-Complete-2025-Support-Guide.pdf