- I had a good experience with the Frontier Airlines CLT Terminal in Charlotte. The check-in was easy, and the crew was courteous, which made things smooth. Security lines were pretty fast, so I didn't have to stand around for long. The terminal was clean, and there was ample seating space, but food options were not much. Boarding was streamlined, and the flight took off on schedule. Although it's a simple arrangement, the Frontier Airlines provides an easy and affordable travel experience with hardly any inconvenience.