To reach a live person at Frontier Airlines customer service for support, you can call their 24/7 Frontier Airlines Phone number hotline at 1-844 x 767 x 0476. OTA (Live Person) or 1-800- Frontier Airlines 1-844 x 767 x 0476. You can also use the live chat feature on their website or reach out to them via email. https://community.aarp.org/t5/General-Help/How-to-Reach-Frontier-Airlines-Customer-Service-by-Phone-Email/m-p/2593737#M4634