Best Time to Fly GCC to DEN: On-Time Stats by Hour & Airline
Northeast Wyoming Regional → Denver International
Data through July 2026 · Last updated October 18, 2026
726 flights were scheduled from Gillette (GCC) to Denver (DEN) in the last 12 months, and 82.9% of those that flew arrived on time, 5.3 points above the US average of 77.6%.
SkyWest Airlines was the only reporting airline with regular flights on this route.
September has been the best month (92% on time) and Sunday the weakest day of the week (74%).
0.7% of flights were cancelled, versus 1.8% nationally.
GCC to DEN on-time performance by airline
Last 12 months. Airlines with fewer than 30 completed flights are marked “limited data”.
| Airline | On time | Avg delay when late | Cancelled | Flights |
|---|---|---|---|---|
| SkyWest Airlines | 82.9% | 114 min | 0.7% | 726 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly GCC to DEN
On-time arrival % by scheduled departure hour (local time), 1,457 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 5am–6am | 84.4% | 1.5% | 522 |
| 7am–8am | 88.9% | 0.0% | 153 |
| 8am–9am | Limited data | 1 | |
| 10am–11am | 84.6% | 0.0% | 65 |
| 11am–12pm | Limited data | 2 | |
| 1pm–2pm | 76.7% | 1.3% | 153 |
| 2pm–3pm | 76.4% | 1.5% | 529 |
| 5pm–6pm | 73.3% | 6.2% | 32 |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on GCC to DEN
On-time arrivals during holiday periods compared with all other days, last 24 months.
| Period | On time | vs other days | Cancelled | Flights |
|---|---|---|---|---|
| Thanksgiving week (Tue before to Mon after) | Limited data | 27 | ||
| Christmas & New Year (Dec 20 - Jan 3) | 80.0% | -1.7 pts | 0.0% | 60 |
| Summer peak (Jun 15 - Aug 15) | 78.1% | -3.6 pts | 0.0% | 280 |
| All other days | 81.7% | — | 1.8% | 1,090 |
Monthly on-time trend
On-time arrival % each month, with the 12-month US average for reference.
What causes delays on this route
Share of reported delay minutes, last 12 months (BTS cause categories).