Where Does Frontier Airlines Fly? - Frontier Airlines is a leading ultra-low-cost carrier in the United States, offering affordable travel options to a wide range of domestic and international destinations. Known for its budget-friendly fares and extensive route network, Frontier connects passengers to over 100 destinations across the U.S., Mexico, the Caribbean, and Central America. Popular domestic routes include major cities like Denver, Orlando, Las Vegas, and Atlanta, while international flights reach sunny destinations such as Cancun, Punta Cana, and Montego Bay. With a focus on providing cost-effective travel, Frontier Airlines is an excellent choice for travelers seeking to explore diverse locations without breaking the bank. Check their route map to discover where Frontier can take you next!