If you’re wondering where does Frontier Airlines fly to, the airline serves an extensive network of destinations across the United States and select international locations. Frontier Airlines flies to major U.S. hubs such as Denver, Orlando, Las Vegas, Phoenix, Dallas, Chicago, Atlanta, and Miami, as well as many regional and leisure-focused airports. Internationally, for travelers searching where does Frontier Airlines fly to, the airline operates routes to Mexico, the Caribbean, and Central America, including popular destinations like Cancun, Punta Cana, Montego Bay, San Juan, and San José, Costa Rica. With affordable fares and frequent nonstop options, Frontier continues to expand where does Frontier Airlines fly to with seasonal and new routes.