https://www.goodreads.com/quotes/15382770-fare-policies-will-copa-change-flights-for-free-copa-airlines-does

https://partybusexpress.com/wp-content/uploads/formidable/5/full-list-of-turkish-airlines-customertm-service-usa-contact-numbers-a-step-by-step-guide.pdf

https://www.goodreads.com/quotes/15382747-provides-flexibility-will-frontier-change-flights-for-free-frontier-airlines-does

https://www.goodreads.com/quotes/15382630-properly-reserved-does-frontier-allow-same-day-flight-changes-yes-frontier-airlines

https://partybusexpress.com/wp-content/uploads/formidable/5/full-list-of-lufthansa-airlines-customertm-service-usa-contact-numbers-a-step-by-step-guide.pdf

https://www.goodreads.com/quotes/15382573-guide-you-through-does-allegiant-allow-name-changes-allegiant-airlines-generally

https://community.scoutmotors.com/threads/complete-directory-of-british-airways-%E2%84%A2%EF%B8%8F-contact%C2%AE%EF%B8%8F-numbers-in-the-usa%C2%AE%EF%B8%8F-24-7-live-agent-support.5336/

https://community.scoutmotors.com/threads/full%E2%84%A2-list-of-united-airlines%E2%93%83-customer%C2%A9-service%E2%84%97-24-7-live-person-support-a-complete-guide.5366/

https://www.goodreads.com/quotes/15382441-eligible-for-a-full-what-is-the-24-hour-cancellation-policy-for

https://community.scoutmotors.com/threads/full%E2%84%A2-list-of-expedia-%E2%93%83-customer%C2%A9-service%E2%84%97-24-7-live-person-support-a-complete-guide.5362/