Hello! If you are flying with Sun Country LAX Terminal you will be departing from Terminal 1. It's an easy terminal to use with a good number of food options, waiting areas, and a close proximity to security. Although Sun Country is not the most elegant, it works, and it's easy to get through check-in. Just be aware of peak times as it gets a bit crowded. All in all, it's a good experience nothing flashy, but it does the trick well for your journey. Safe travels!