Frontier Airlines operates from Terminal 5 at Los Angeles International Airport (LAX). Terminal 5 is primarily used for domestic flights and offers passengers a range of services, including check-in counters, baggage claim, security screening, retail stores, and dining options. If you are flying with Frontier Airlines, it is recommended to check your flight details in advance to confirm your departure gate, as gate assignments may change due to operational needs.
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Frontier Airlines LAX Terminal - Los Angeles International Airport

Frontier Airlines operates from Terminal 1 at Los Angeles International Airport. This comprehensive blog explains the services offered.