The experience of flying with Spirit Airlines from Dallas/Fort Worth International Airport (DFW) was simple and effective. Spirit operates out of Terminal E, which is easy to navigate and well-organized. When I arrived at Spirit Airlines DFW Terminal the check-in process was smooth, though the lines at the ticket counter were a bit long due to the airline’s budget-friendly popularity. Luckily, I had checked in online, so I quickly dropped off my bag and headed to security.