https://www.bikeforums.net/northeast/1311085-how-talk-frontier-air-lines-u-s-customer-service-o-speak-human-fast.html#post23577004

https://si.osu.edu/sites/default/files/living_lab/products/live-agent-cathay-pacific-airlines-help-2025-contact-directory-essential-guide-live-person.pdf

https://si.osu.edu/sites/default/files/living_lab/products/expedia-new-call-to-live-agent-usa-contact-numbers-complete-2025-usa-guide_0.pdf

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https://www.bikeforums.net/northeast/1311083-speaking-someone-delta-airlines-usa-contact-numbers-complete-2026-guide.html#post23577002

https://www.bikeforums.net/northeast/1311080-live-talk-talk-live-agent-expedi-usa-contact-numbers-alaska-2025-co.html#post23576999

https://si.osu.edu/sites/default/files/living_lab/products/live-chat-avianca-airlines-usa-2025-help-desk-info-usa-contact-numbers-the-detailed-guide.pdf

https://www.bikeforums.net/northeast/1311059-talk-someone-southwest-airlines-usa-contact-numbers-complete-2025-guide.html#post23576977

https://si.osu.edu/sites/default/files/living_lab/products/full-list-of-sun-country-airlines-customer-contact-numbers-in-usa-a-ultimate-step-by-step-guide.pdf

https://si.osu.edu/sites/default/files/living_lab/products/Allegiant-Airlines%C2%AE%EF%B8%8F-Customer%C2%AE%EF%B8%8F-USA-contact-Numbers-A-Step-By-Step-Guide.pdf