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Terminal 1, which is mostly utilized by domestic airlines, is where Frontier Airlines is based at Charlotte Douglas International Airport (CLT). Frontier Airlines CLT Terminal is a low-cost airline that provides affordable travel options, but also charges extra for amenities like carry-ons, checked baggage, and seat selection. Check-in, which can be completed online or at self-service kiosks, requires passengers to arrive early. Passengers are advised to study the airline's regulations in advance, as baggage prices differ based on weight and size. Passengers must follow TSA guidelines and present appropriate identification for security. Frontier wants to offer effective service at a reasonable cost without sacrificing quality.