For a hassle-free start, it’s recommended that passengers check in online or via the Frontier mobile app before arriving at the airport. However, if you need to check bags or require assistance, Frontier staff are available at their counter in Terminal 5. Bag drop closes 45 minutes before departure, so make sure to arrive early. https://airlinesofficesworld.com/frontier-airlines-lax-terminal-los-angeles-international-airport/