The Sun Country Airlines app is designed to enhance the travel experience for users by providing essential tools for flight management. Key features include the ability to check in for flights, obtain boarding passes, and manage trip details all from a single platform. Users can check in between one and 24 hours before departure and download their boarding passes for convenient access.

Additionally, the app allows travelers to manage their trips by adding bags, selecting seats, and adjusting flight details as needed. Users can also book new flights and check the status of their flights in real time. For frequent travelers, the app offers easy access to loyalty account information and the option to enroll in Sun Country Rewards, enabling users to earn points for future travel.