| Northern Colorado Regional → Denver International FNL–DEN | 9 | 306 | 38% | 45 | SkyWest Airlines Inc., United Air Lines Inc., Sun Country Airlines d/b/a... | Apr 2025 – May 2026 |
| Northern Colorado Regional → Laughlin/Bullhead International FNL–IFP | 5 | 774 | 83% | 637 | Sun Country Airlines d/b/a... | Jul 2025 – Jan 2026 |
| Northern Colorado Regional → Reno/Tahoe International FNL–RNO | 3 | 446 | 80% | 785 | Sun Country Airlines d/b/a... | Mar 2025 – May 2026 |
| Northern Colorado Regional → Minneapolis-St Paul Intl/Wold-Chamberlain FNL–MSP | 2 | 54 | 16% | 673 | Allegiant Air, Sun Country Airlines d/b/a... | Mar 2026 – Mar 2026 |
| Northern Colorado Regional → Nassau FNL–NAS international | 2 | 127 | 48% | 1,911 | KaiserAir, Inc., Sun Country Airlines d/b/a... | Nov 2025 – Apr 2026 |
| Northern Colorado Regional → Portland International FNL–PDX | 2 | 96 | 27% | 956 | Alaska Airlines Inc., Allegiant Air | Nov 2025 – Nov 2025 |
| Northern Colorado Regional → Pullman/Moscow Regional FNL–PUW | 2 | 287 | 80% | 745 | Allegiant Air | Sep 2025 – Oct 2025 |
| Northern Colorado Regional → San Diego International FNL–SAN | 2 | 151 | 45% | 860 | Alaska Airlines Inc. | Oct 2025 – Nov 2025 |
| Northern Colorado Regional → Sacramento International FNL–SMF | 2 | 269 | 75% | 892 | Allegiant Air | Oct 2025 – Oct 2025 |
| Northern Colorado Regional → Albuquerque International Sunport FNL–ABQ | 1 | 146 | 82% | 383 | Alaska Airlines Inc. | Nov 2025 – Nov 2025 |
| Northern Colorado Regional → Phoenix FNL–AZA | 1 | 35 | 19% | 615 | Allegiant Air | Jan 2026 – Jan 2026 |
| Northern Colorado Regional → Kalamazoo/Battle Creek International FNL–AZO | 1 | 54 | 36% | 1,017 | Eastern Air Express, LLC (EAX) | Mar 2026 – Mar 2026 |
| Northern Colorado Regional → Boeing Fld/King County International FNL–BFI | 1 | 148 | 93% | 988 | Alaska Airlines Inc. | Mar 2025 – Aug 2025 |
| Northern Colorado Regional → Boise Air Trml/Gowen Field FNL–BOI | 1 | 158 | 89% | 615 | Alaska Airlines Inc. | Nov 2025 – Nov 2025 |
| Northern Colorado Regional → Baltimore/Washington International Thurgood Marshall FNL–BWI | 1 | 180 | 100% | 1,504 | Allegiant Air | Apr 2025 – Sep 2025 |
| Northern Colorado Regional → Bozeman Yellowstone International FNL–BZN | 1 | 142 | 79% | 481 | Allegiant Air | Nov 2025 – Nov 2025 |
| Northern Colorado Regional → City Of Colorado Springs Municipal FNL–COS | 1 | 0 | 0% | 115 | SkyWest Airlines Inc. | Aug 2025 – Aug 2025 |
| Northern Colorado Regional → Fresno Yosemite International FNL–FAT | 1 | 152 | 84% | 834 | Allegiant Air | Oct 2025 – Oct 2025 |
| Northern Colorado Regional → Flagstaff Pulliam FNL–FLG | 1 | 125 | 69% | 516 | Allegiant Air | Nov 2025 – Nov 2025 |
| Northern Colorado Regional → Joe Foss Field FNL–FSD | 1 | 0 | 0% | 477 | Eastern Air Express, LLC (EAX) | Mar 2026 – Mar 2026 |
| Northern Colorado Regional → Spokane International FNL–GEG | 1 | 123 | 68% | 795 | Allegiant Air | Nov 2025 – Nov 2025 |
| Northern Colorado Regional → Washington Dulles International FNL–IAD | 1 | 177 | 98% | 1,466 | Allegiant Air | Apr 2026 – Apr 2026 |
| Northern Colorado Regional → Ithaca Tompkins International FNL–ITH | 1 | 49 | 28% | 1,482 | Eastern Air Express, LLC (EAX) | Mar 2026 – Mar 2026 |
| Northern Colorado Regional → John F Kennedy International FNL–JFK | 1 | 0 | 0% | 1,635 | Global Crossing Airlines, Inc. | Mar 2026 – Mar 2026 |
| Northern Colorado Regional → Laramie Regional FNL–LAR | 1 | 0 | 0% | 69 | CFM Inc d/b/a Contour... | Dec 2025 – Dec 2025 |
| Northern Colorado Regional → Harry Reid International FNL–LAS | 1 | 161 | 89% | 628 | Allegiant Air | Nov 2025 – Nov 2025 |
| Northern Colorado Regional → Sacramento Mather FNL–MHR | 1 | 3 | 43% | 879 | ADVANCED AIR, LLC | Jan 2026 – Jan 2026 |
| Northern Colorado Regional → General Mitchell International FNL–MKE | 1 | 100 | 71% | 900 | JetBlue Airways | Oct 2025 – Oct 2025 |
| Northern Colorado Regional → Louis Armstrong New Orleans International FNL–MSY | 1 | 118 | 63% | 1,101 | Sun Country Airlines d/b/a... | Nov 2025 – Nov 2025 |
| Northern Colorado Regional → Okc Will Rogers International FNL–OKC | 1 | 106 | 59% | 534 | Allegiant Air | Mar 2026 – Mar 2026 |
| Northern Colorado Regional → Seattle Paine Field International FNL–PAE | 1 | 1 | 17% | 997 | Kenmore Air Harbor | Nov 2025 – Nov 2025 |
| Northern Colorado Regional → Pocatello Regional FNL–PIH | 1 | 136 | 76% | 427 | Allegiant Air | Sep 2025 – Sep 2025 |
| Northern Colorado Regional → Phoenix FNL–SCF | 1 | 4 | 57% | 606 | ADVANCED AIR, LLC | Nov 2025 – Nov 2025 |
| Northern Colorado Regional → Seattle-Tacoma International FNL–SEA | 1 | 0 | 0% | 986 | Alaska Airlines Inc. | Aug 2025 – Aug 2025 |
| Northern Colorado Regional → Charles M Schulz/Sonoma County FNL–STS | 1 | 1 | 14% | 959 | Scott Aviation, LLC d/b/a... | Nov 2025 – Nov 2025 |
| Northern Colorado Regional → Sioux Gateway/Brig General Bud Day Field FNL–SUX | 1 | 117 | 65% | 468 | Allegiant Air | Sep 2025 – Sep 2025 |
| Northern Colorado Regional → Tucson International FNL–TUS | 1 | 0 | 0% | 663 | SkyWest Airlines Inc. | Mar 2026 – Mar 2026 |
| Northern Colorado Regional → Toronto FNL–YYZ international | 1 | 2 | 25% | 1,319 | Chartright Air Inc. | Oct 2025 – Oct 2025 |