Best Time to Fly DEN to GCC: On-Time Stats by Hour & Airline
Denver International → Northeast Wyoming Regional
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 80.0% of Denver (DEN) to Gillette (GCC) flights arrived on time (726 scheduled flights). That is 2.3 points above the national average of 77.6%.
SkyWest Airlines was the only reporting airline with regular flights on this route.
September has been the best month (91% on time) and Thursday the weakest day of the week (72%).
0.8% of flights were cancelled, versus 1.8% nationally.
DEN to GCC 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 | 80.0% | 79 min | 0.8% | 726 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly DEN to GCC
On-time arrival % by scheduled departure hour (local time), 1,457 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 7am–8am | 94.4% | 0.0% | 36 |
| 8am–9am | Limited data | 29 | |
| 9am–10am | Limited data | 2 | |
| 11am–12pm | 78.5% | 2.1% | 191 |
| 12pm–1pm | 85.0% | 1.2% | 492 |
| 1pm–2pm | Limited data | 1 | |
| 2pm–3pm | Limited data | 1 | |
| 3pm–4pm | Limited data | 8 | |
| 4pm–5pm | Limited data | 25 | |
| 7pm–8pm | 69.4% | 0.0% | 122 |
| 8pm–9pm | 82.7% | 1.9% | 377 |
| 9pm–10pm | 71.3% | 0.6% | 173 |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on DEN to GCC
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) | 86.4% | +4.2 pts | 1.7% | 60 |
| Summer peak (Jun 15 - Aug 15) | 70.7% | -11.6 pts | 0.7% | 280 |
| All other days | 82.3% | — | 1.6% | 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).