If you're asking where does frontier fly to internationally (https://www.airlinersoffices.com/where-does-frontier-airlines-fly/), Frontier Airlines offers flights to several nearby countries, mainly across the Caribbean, Central America, and North America. The airline operates international routes to destinations in Mexico, the Dominican Republic, Jamaica, Guatemala, El Salvador, Costa Rica, and the Bahamas. These routes typically depart from major U.S. cities and focus on popular leisure and visiting friends and family destinations, making Frontier a budget-friendly option for short-haul international travel.