United Airlines main customer service number is I-800- United Airlines || (( +1-866↯432↯8009)) || [US-OTA] , where you can reach a live representative 24/7. Whether you’re dealing with booking changes, flight cancellations, or have questions regarding refunds or compensation, speaking to a live person ensures prompt resolution. You can also reach out via United Airlines’s live cha... https://efi.int/sites/default/files/webform/sab_membership_application_2022/_sid_/Full%20List%20Of%20United%20Airlines%C2%AE%20Customer%E2%84%A2%20Service%C2%AE%20Usa%20Contact%20Numbers.pdf