https://ppf.ucsf.edu/sites/ppf.ucsf.edu/files/webform/United%20airlines%20USA%20Contact%20Numbers%E2%84%A2_%20An%20Comprehensive%20Guide.pdf https://ppf.ucsf.edu/sites/ppf.ucsf.edu/files/webform/Complete%20List%20of%20Official%20JetBlue%20Airlines.%E2%84%A2%20Contact%20Numbers%20in%20the%20USA%20%E2%80%93%20Full%20Detailed%20Guide.pdf https://ppf.ucsf.edu/sites/ppf.ucsf.edu/files/webform/Complete%20List%20of%20Official%20Frontier%20Airlines.%E2%84%A2%20Contact%20Numbers%20in%20the%20USA%20%E2%80%93%20Full%20Detailed%20Guide.pdf https://ppf.ucsf.edu/sites/ppf.ucsf.edu/files/webform/Complete%20List%20of%20Official%20Emirates%20Airlines.%E2%84%A2%20Contact%20Numbers%20in%20the%20USA%20%E2%80%93%20An%20Official%20Guide.pdf https://ppf.ucsf.edu/sites/ppf.ucsf.edu/files/webform/Lufthansa%20Airlines%20USA%20Contact%20Numbers%E2%84%A2_%20in%20detail%20guide.pdf https://forum.generationzero.com/t/complete-list-of-delta-airlines-support-contact-numbers-in-the-usa-the-ultimate-official-guide/54162 https://forum.generationzero.com/t/complete-list-of-official-american-airlines-contact-numbers-in-the-usa-full-detailed-guide/54231 https://forum.generationzero.com/t/full-list-of-official-american-airlines-customer-contact-numbers-the-ultimate-official-guide/54271 https://forum.generationzero.com/t/full-list-of-official-american-airlines-customer-contact-numbers-in-usa-in-detailed-guide/54378