Operating out of Las Vegas McCarran International Airport’s Terminal 3, is Frontier Airlines LAS Terminal With its many amenities, quick security checks, and fast check-in desks, this contemporary terminal provides a simplified travel experience. Numerous food establishments, retail stores, and cozy waiting places are available to passengers. In addition, Terminal 3 offers easy access to ground transportation, free Wi-Fi, and charging stations, making the travel experience convenient and enjoyable for Frontier Airlines customers.