The Frontier mobile app offers a convenient solution for travelers. With features like mobile boarding passes, users can bypass long lines and head straight to the security checkpoint. The app also allows passengers to add bags and select seats, even after the initial booking and check-in process. Additionally, the app provides access to affordable flight options and allows users to track the status of their flights in real-time. Furthermore, the app includes an interactive route map and other features for a seamless Travel experience.