
The Mainline Hub features the current day Frontier Airlines flights, as well as the jet aircraft routes of the past Frontier Airlines. Serving the United States, Canada and Mexico, the Mainline Hub allows pilots to fly Airbus and Boeing aircraft to over 100 cities utilized in current and past operations.
| FFT109 | Michael Munion | 44.10 |
| FFT110 | Taylor Bowman | 15.90 |
| FFT126 | John Vinke | 14.40 |
| FFT169 | Claude Cheatwood | 12.40 |
| FFT144 | Gary Locke | 12.10 |
| FFT109 | Michael Munion | 18 |
| FFT206 | Kyle Weber | 10 |
| FFT169 | Claude Cheatwood | 10 |
| FFT110 | Taylor Bowman | 7 |
| FFT144 | Gary Locke | 7 |
| FFT108 | Daryl Hudnall |
| FFT114 | Tom Stewart |
| FFT133 | Jon Pham |
| FFT141 | Matt Ruby |
| FFT139 | Todd Johnson |