Spirit

https://airlineshelpdesk2.odoo.com/blog/our-blog-1/ways-to-reach-spirit-airlines-customer-service-by-phone-number-or-email-spirit-official-support-9

https://airlineshelpdesk2.odoo.com/blog/our-blog-1/ways-to-connect-spirit-airlines-customer-service-by-phone-number-or-email-spirit-live-agent-10

https://visaliv.com/forum/main-forum/7-best-ways-to-connect-delta-airlines-customer-service-by-phone-number-chat-and-email-options-a-step-by-step-guide1