Frontier Airlines operates out of Terminal E at Dallas/Fort Worth International Airport. This terminal is known for being one of the busiest at DFW, offering easy access to gates, ticketing counters, and baggage claim areas. Since Terminal E is centrally located, it provides quick connections to other terminals via the Skylink train system. https://terminalsworld.com/airlines/frontier-airlines/frontier-airlines-dallas-fort-worth-international-airport-dfw-terminal/