https://www.analystforum.com/t/complete-list-of-american-airlines-support-contact-numbers-in-the-usa-the-ultimate-official-guide/160543
https://www.analystforum.com/t/complete-list-of-delta-airlines-support-contact-numbers-in-the-usa-the-ultimate-official-guide/160583
https://www.analystforum.com/t/complete-list-of-united-airlines-support-contact-numbers-in-the-usa-the-ultimate-official-guide/160505

https://www.fundamentalforums.org/threads/a-full-list-of-american-r-airlines-customertm-service-r-usa-contact-numbers-a-step-by-step-guide-2026.15336/
https://www.analystforum.com/t/22-full-list-of-delta-airlines-payroll-support-24-7-live-representative-numbers-a-complete-guide/160852
https://www.analystforum.com/t/22-full-list-of-american-airlines-payroll-support-24-7-live-representative-numbers-a-complete-guide/160901
https://www.analystforum.com/t/22-full-list-of-united-airlines-support-24-7-live-representative-numbers-a-complete-guide/160791