| Tri-State/Milton J Ferguson Field → Charlotte/Douglas International HTS–CLT | 1,017 | 37,312 | 73% | 235 | Piedmont Airlines | Jan 2025 – Jul 2026 |
| Tri-State/Milton J Ferguson Field → St. Pete-Clearwater International HTS–PIE | 179 | 25,371 | 81% | 721 | Allegiant Air, CFM Inc d/b/a Contour... | Jan 2025 – Jul 2026 |
| Tri-State/Milton J Ferguson Field → Orlando Sanford International HTS–SFB | 142 | 21,695 | 85% | 665 | Allegiant Air | Jan 2025 – Jul 2026 |
| Tri-State/Milton J Ferguson Field → Frederick W Smith Intl/Memphis HTS–MEM | 124 | 0 | | 471 | Federal Express Corporation | Jan 2025 – Jul 2026 |
| Tri-State/Milton J Ferguson Field → Fort Lauderdale/Hollywood International HTS–FLL | 68 | 5,968 | 47% | 859 | Allegiant Air | May 2025 – May 2026 |
| Tri-State/Milton J Ferguson Field → Rickenbacker International HTS–LCK | 61 | 0 | | 102 | Federal Express Corporation | Jan 2025 – Jul 2026 |
| Tri-State/Milton J Ferguson Field → Myrtle Beach International HTS–MYR | 55 | 7,511 | 75% | 382 | Allegiant Air, Sun Country Airlines d/b/a... | May 2025 – Jul 2026 |
| Tri-State/Milton J Ferguson Field → Central IL Rgnl/Bloomington-Normal HTS–BMI | 47 | 0 | | 369 | Federal Express Corporation | Jun 2025 – Jul 2026 |
| Tri-State/Milton J Ferguson Field → Eglin Afb/Destin-Ft Walton Beach HTS–VPS | 29 | 3,658 | 74% | 589 | Allegiant Air | May 2025 – Jul 2026 |
| Tri-State/Milton J Ferguson Field → Fort Wayne International HTS–FWA | 7 | 0 | | 228 | Federal Express Corporation | Jul 2025 – Jul 2026 |
| Tri-State/Milton J Ferguson Field → Punta Gorda HTS–PGD | 3 | 328 | 64% | 790 | Allegiant Air | May 2025 – Aug 2025 |
| Tri-State/Milton J Ferguson Field → Asheville Regional HTS–AVL | 2 | 0 | 0% | 202 | Sun Country Airlines d/b/a... | Sep 2025 – Sep 2025 |
| Tri-State/Milton J Ferguson Field → Birmingham-Shuttlesworth International HTS–BHM | 2 | 0 | | 406 | Federal Express Corporation | Feb 2026 – Feb 2026 |
| Tri-State/Milton J Ferguson Field → Nashville International HTS–BNA | 2 | 0 | 0% | 275 | Federal Express Corporation, Sun Country Airlines d/b/a... | Aug 2025 – May 2026 |
| Tri-State/Milton J Ferguson Field → Greenville Spartanburg International HTS–GSP | 2 | 79 | 79% | 240 | Piedmont Airlines | Aug 2025 – Jan 2026 |
| Tri-State/Milton J Ferguson Field → Lafayette Rgnl/Paul Fournet Field HTS–LFT | 2 | 159 | 85% | 779 | Federal Express Corporation, Sun Country Airlines d/b/a... | Jul 2025 – Dec 2025 |
| Tri-State/Milton J Ferguson Field → Louisville Muhammad Ali International HTS–SDF | 2 | 0 | | 173 | Federal Express Corporation | Jan 2025 – Feb 2026 |
| Tri-State/Milton J Ferguson Field → New York Stewart International HTS–SWF | 2 | 108 | 29% | 498 | Sun Country Airlines d/b/a... | Oct 2025 – Oct 2025 |
| Tri-State/Milton J Ferguson Field → Athens/Ben Epps HTS–AHN | 1 | 150 | 81% | 308 | Sun Country Airlines d/b/a... | Aug 2025 – Aug 2025 |
| Tri-State/Milton J Ferguson Field → Hartsfield/Jackson Atlanta International HTS–ATL | 1 | 152 | 82% | 343 | Sun Country Airlines d/b/a... | Nov 2025 – Nov 2025 |
| Tri-State/Milton J Ferguson Field → Austin-Bergstrom International HTS–AUS | 1 | 167 | 90% | 1,030 | Sun Country Airlines d/b/a... | Oct 2025 – Oct 2025 |
| Tri-State/Milton J Ferguson Field → Akron-Canton Regional HTS–CAK | 1 | 70 | 65% | 186 | Breeze Aviation Group DBA Breeze | Apr 2026 – Apr 2026 |
| Tri-State/Milton J Ferguson Field → Daytona Beach International HTS–DAB | 1 | 100 | 56% | 639 | Allegiant Air | Oct 2025 – Oct 2025 |
| Tri-State/Milton J Ferguson Field → Detroit Metro Wayne County HTS–DTW | 1 | 0 | | 269 | Federal Express Corporation | Nov 2025 – Nov 2025 |
| Tri-State/Milton J Ferguson Field → Smyrna HTS–MQY | 1 | 130 | 70% | 272 | Sun Country Airlines d/b/a... | Sep 2025 – Sep 2025 |
| Tri-State/Milton J Ferguson Field → Norfolk International HTS–ORF | 1 | 159 | 98% | 363 | JetBlue Airways | Oct 2025 – Oct 2025 |
| Tri-State/Milton J Ferguson Field → Philadelphia International HTS–PHL | 1 | 0 | 0% | 407 | Sun Country Airlines d/b/a... | Nov 2025 – Nov 2025 |
| Tri-State/Milton J Ferguson Field → Pensacola International HTS–PNS | 1 | 96 | 53% | 605 | Allegiant Air | Oct 2025 – Oct 2025 |
| Tri-State/Milton J Ferguson Field → Savannah/Hilton Head International HTS–SAV | 1 | 164 | 88% | 437 | Sun Country Airlines d/b/a... | Nov 2025 – Nov 2025 |
| Tri-State/Milton J Ferguson Field → Springfield-Branson Ntl HTS–SGF | 1 | 147 | 79% | 597 | Allegiant Air | Sep 2025 – Sep 2025 |
| Tri-State/Milton J Ferguson Field → Tri-Cities HTS–TRI | 1 | 36 | 72% | 131 | Piedmont Airlines | Dec 2025 – Dec 2025 |