Frontier Airlines DEN Terminal operates out of Concourse A at Denver International Airport (DEN), which serves as the airline's main hub. Known for its low-cost, customer-focused service, Frontier offers a smooth and efficient travel experience at this modern and spacious terminal. Concourse A features streamlined check-in counters, self-service kiosks, and TSA PreCheck options to simplify the security process. They feature dining and shopping options, seats, and power charging stations throughout the airport to provide comfort during travel. By positioning itself near airport parking, DEN's ground transportation, and connecting concourses on its automated train system, Frontier Airlines makes getting around the city convenient for the traveler.