Frontier Airlines operates from Terminal E at Dallas Fort Worth International Airport. This terminal is specifically designed to serve domestic low-cost carriers and offers a convenient and streamlined experience for travelers. Once you arrive at Terminal E, you’ll find Frontier’s check-in counters located near the entrance. It’s recommended to arrive at least two hours before your flight, especially during peak travel times. Passengers can check in using the self-service kiosks or get assistance from airline staff. Mobile and online check-in options are also available, making it easier to bypass long lines and head straight to the security checkpoint.