Gillette (GCC) to Denver (DEN): On-Time Performance
Data through July 2026
When you fly GCC to DEN matters as much as anything else about the booking: the route swung from 92% on-time in September 2024 to just 64% in April 2025. Across the full period the route averages 81% on-time against a national 78%.
- On-time
- 81%
- arrived <15 min late
- Avg delay
- 26 min
- completed flights
- Cancelled
- 1.3%
- Flights/day
- 2.0
- last 12 months
- Duration
- 1h 31m
- scheduled
- Distance
- 313 mi
Monthly on-time trend
Best time to fly from GCC to DEN
Aim for departures around 7 a.m. (89% on-time); avoid 5 p.m. departures (73%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 82% | 18 min |
| Tuesday | 83% | 20 min |
| Wednesday | 82% | 26 min |
| Thursday | 79% | 34 min |
| Friday | 81% | 18 min |
| Saturdaybest | 85% | 31 min |
| Sunday | 74% | 35 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft23%
- Airline operations55%
- National airspace system13%
- Weather9%
Frequently asked questions
- How often are flights from GCC to DEN delayed?
- 19% of GCC–DEN flights arrived 15 or more minutes late (the US DOT definition of a delay) between 2024-07 and 2026-07. The average arrival delay across completed flights was 26 minutes.
- What is the best time of day to fly from GCC to DEN?
- Departures around 7 a.m. have the best record (89% on-time), while departures around 5 p.m. have the worst (73%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from GCC to DEN?
- The scheduled GCC–DEN flight time averages 1h 31m over 313 miles. Actual arrival times vary — flights on this route land 15+ minutes late 19% of the time.
- How often are GCC to DEN flights cancelled?
- 1.3% of scheduled flights on this route were cancelled between 2024-07 and 2026-07, at or below the national rate of 1.6%.
- What is the worst month to fly from GCC to DEN?
- April 2025 was the roughest month in this dataset, with only 64% of arrivals on time. The best was September 2024 at 92%. If your dates are flexible, that 27-point gap is worth planning around.
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Based on 1,519 flights, 2024-07–2026-07. Source: US DOT Bureau of Transportation Statistics. Updated 2026-09-28.