Is Frontier a Good Airline, Frontier Airlines, headquartered in Denver, Colorado, offers travelers an ultra-low-cost option with 24/7 booking, cancellations, and check-in services. Passengers can manage baggage, luggage, airport services, and visa guidance easily online or at the airport. While Frontier does not provide lounges or WiFi, it focuses on affordable, efficient travel. For budget-conscious flyers seeking streamlined domestic and international flights, Frontier Airlines delivers practical, travel-focused services, making it a reliable choice for cost-savvy passengers.