https://www.dsoforums.net/forum/topic/23926-full-list-of-united-airlines-customer%C2%AE-contact-numbers-in-usa-a-ultimate-step-by-step-guide/

https://connect.allplan.com/de/forum/themen/topic/topics/sonstige-themen/american-airliner-customer-servicetm-official-usa-contact-numbers.html

https://www.dsoforums.net/forum/topic/23945-elaborate-list-of-aeromexico-customer-contact-numbers-in-usa-2025-guide/

https://www.dsoforums.net/forum/topic/23874-avianca-airlines%C2%AE%EF%B8%8F-usa-contact-numbers-%E2%80%93-talk-to-a-real-person-2025-live-agent-directory/

https://si.osu.edu/sites/default/files/living_lab/products/full-list-of-quickbookstm%EF%B8%8F-desktop-customer%C2%AE-contact-numbers-details-you-need-2025.pdf

https://www.dsoforums.net/forum/topic/23938-live-talk-rep-24×7-talk-to-someone-at-air-canada-airlines%C2%AE%EF%B8%8Frep-usa-through-contact%C2%AE-numbers-the-detailed-guide/

https://connect.allplan.com/de/forum/themen/topic/topics/allplan-brigde/expediar-customer-servicetm-official-usa-contact-numbers.html

https://www.dsoforums.net/forum/topic/23941-%C2%A0-talk-to-someone-at-expedia%E2%84%A2%EF%B8%8F-usa-through-contact%C2%AE-numbers-the-detailed-guide/

https://www.dsoforums.net/forum/topic/23934-live-talk-rep-24×7-talk-to-someone-at-allegiant-airlines%C2%AE%EF%B8%8Frep-usa-through-contact%C2%AE-numbers-the-detailed-guide/

2025 United Airlines® USA Contact Numbers: The Total Breakdown