Frontier Airlines, known for its ultra-low-cost fares and animal-themed aircraft, operates domestic and limited international flights from Dallas/Fort Worth International Airport. DFW, one of the largest and busiest airports in the world, serves as a major hub for numerous carriers, including American Airlines, but also supports a strong presence from low-cost carriers like Frontier. https://airlinesofficesworld.com/frontier-airlines-dfw-airport-terminal/