https://www.dsoforums.net/forum/topic/23967-full-list-of-aeromexico-airlines-customer%C2%AE-contact-numbers-in-usa-a-ultimate-step-by-step-guide/

https://official-delta-helpcenters.pages.dev/en/us/help/delta-airlines-customer-service-usa-contact-numbers-official-2025-guide/

https://www.dsoforums.net/forum/topic/23939-full-list-of-frontier-airlines-customer%C2%AE-contact-numbers-in-usa-a-ultimate-step-by-step-guide/

https://connect.allplan.com/de/forum/themen/topic/topics/allplan-exchange-1/expediar-customer-servicetm-official-usa-contact-numbers-1.html

https://www.dsoforums.net/forum/topic/23948-live-talk-rep-24×7-talk-to-someone-at-lufthansa-airlines%C2%AE%EF%B8%8Frep-usa-through-contact%C2%AE-numbers-the-detailed-guide/

https://connect.allplan.com/forum/topics/topic/topics/international-collaborations/priceliner-customer-servicetm-official-usa-contact-numbers.html

United Airlines USA Contact NumbersTM: An Official Guide

https://www.dsoforums.net/forum/topic/23936-live-call-call-to-a-live-agent-at-expedi%F0%9D%93%AA%C2%AE%EF%B8%8F-%E2%80%93-usa-numbers-for-travelers-2025-guide%C2%A0/https://www.dsoforums.net/forum/topic/23936-live-call-call-to-a-live-agent-at-expedi%F0%9D%93%AA%C2%AE%EF%B8%8F-%E2%80%93-usa-numbers-for-travelers-2025-guide%C2%A0/

https://www.dsoforums.net/forum/topic/23935-full-list-of-delta-airlines-customer%C2%AE-contact-numbers-in-usa-a-ultimate-step-by-step-guide/

https://www.dsoforums.net/forum/topic/23942-live-talk-rep-24×7-talk-to-someone-at-jetblue-airlines%C2%AE%EF%B8%8Frep-usa-through-contact%C2%AE-numbers-the-detailed-guide/