Frontier Airlines Phoenix Sky Harbor International Airport offers reasonably priced flights to a number of locations. With choices for baggage, seat preference, and other amenities, the airline, which is well-known for its low-cost business model, lets customers personalize their trip. Frontier has a strong emphasis on efficiency, providing easy check-in procedures and a straightforward style that caters to passengers on a tight budget. For travelers leaving from or arriving at Phoenix Sky Harbor, Frontier Airlines makes flying easy and accessible by emphasizing price and convenience.