Airport · GCC · Gillette, Wyoming
Gillette, WY
Gillette, WY posts top-quartile on-time performance among the 382 tracked U.S. airports, as a smaller regional airport. According to the U.S. DOT Bureau of Transportation Statistics, drawn from 8,123 flights (2020–2025); its biggest delay driver is carrier.
Data updated 2026-06-13
- 86%
- On-time
- Top 22%
- on-time, US airports
- 122 min
- Delay when late
- 1.29%
- Cancelled
Key Performance Metrics
Total Flights
8,123
Best Month
Sep 96.7%
Worst Month
Feb 91.6%
Delayed
1,136
Cancelled
105
GCC on-time rate vs. the national average
Ahead of the U.S. average across all 382 tracked airports.
Where GCC sits among all 382 tracked airports
GCC's 86% on-time rate falls in the 85-90% band, the 116-airport band it shares.
National on-time-rate distribution
- 60-65% 1
1 airport between 60% and 65% on-time
1 airports
- 65-70% 4
4 airports between 65% and 70% on-time
4 airports
- 70-75% 9
9 airports between 70% and 75% on-time
9 airports
- 75-80% 48
48 airports between 75% and 80% on-time
48 airports
- 80-85%
192 airports between 80% and 85% on-time
192 airports
- 85-90%
116 airports between 85% and 90% on-time
116 airports
- 90-95% 12
12 airports between 90% and 95% on-time
12 airports
What this shows GCC is marked in the 85-90% band.
Delay Cause Breakdown
Top delay cause: Carrier. Total delay minutes: 87,520.
GCC - seasonal on-time pattern
Best: September (96.7%) · worst: February (91.6%)
Seasonal Performance Patterns
Monthly averages across all years of data. Best month: September (96.7% on-time). Most delays: February (91.6% on-time).
| Month | Avg Flights | Avg Delayed | Avg Cancelled | On-Time % |
|---|---|---|---|---|
| December | 118 | 17 | 2 | 91.9% |
| November | 113 | 11 | 0 | 95.1% |
| October | 123 | 14 | 2 | 95.4% |
| September | 111 | 9 | 0 | 96.7% |
| August | 121 | 21 | 0 | 92.6% |
| July | 120 | 21 | 0 | 93.2% |
| June | 117 | 18 | 1 | 94.3% |
| May | 108 | 16 | 1 | 92.4% |
| April | 96 | 13 | 2 | 94.6% |
| March | 115 | 14 | 4 | 93.9% |
| February | 99 | 19 | 2 | 91.6% |
| January | 115 | 18 | 3 | 92.2% |
Year-Over-Year Performance
Annual flight volume and on-time trends at GCC.
GCC - on-time rate by year
2020–2025, year-over-year trend.
| Year | Flights | Delayed | Cancelled | On-Time % |
|---|---|---|---|---|
| 2025 | 1,460 | 134 | 14 | 90.8% |
| 2024 | 1,464 | 82 | 9 | 94.4% |
| 2023 | 1,281 | 78 | 13 | 93.9% |
| 2022 | 1,248 | 64 | 18 | 94.9% |
| 2021 | 1,502 | 103 | 20 | 93.1% |
| 2020 | 1,168 | 54 | 31 | 95.4% |
Cancellation & Diversion Analysis
Flight disruption statistics for Gillette, WY.
Cancellation Rate
1.29%
105 of 8,123 flights
Diversion Rate
0.18%
15 of 8,123 flights
Delay Rate
14.0%
1,136 of 8,123 flights
Monthly Performance
Recent 24 months of flight data.
| Period | Flights | Dep Delayed | Arr Delayed | Cancelled | Diverted |
|---|---|---|---|---|---|
| Dec 2025 | 124 | 17 | 12 | 1 | 0 |
| Nov 2025 | 120 | 5 | 4 | 0 | 0 |
| Oct 2025 | 124 | 7 | 7 | 0 | 0 |
| Sep 2025 | 120 | 4 | 3 | 0 | 0 |
| Aug 2025 | 124 | 12 | 21 | 0 | 1 |
| Jul 2025 | 124 | 9 | 18 | 0 | 0 |
| Jun 2025 | 120 | 11 | 18 | 0 | 0 |
| May 2025 | 124 | 16 | 18 | 0 | 1 |
| Apr 2025 | 120 | 16 | 16 | 1 | 0 |
| Mar 2025 | 124 | 9 | 6 | 0 | 0 |
| Feb 2025 | 112 | 10 | 8 | 6 | 0 |
| Jan 2025 | 124 | 18 | 15 | 6 | 0 |
| Dec 2024 | 124 | 8 | 3 | 0 | 1 |
| Nov 2024 | 118 | 11 | 11 | 1 | 0 |
| Oct 2024 | 124 | 8 | 8 | 1 | 0 |
| Sep 2024 | 120 | 5 | 8 | 0 | 1 |
| Aug 2024 | 128 | 9 | 10 | 0 | 1 |
| Jul 2024 | 124 | 6 | 13 | 0 | 0 |
| Jun 2024 | 120 | 8 | 13 | 0 | 1 |
| May 2024 | 124 | 5 | 7 | 0 | 0 |
| Apr 2024 | 120 | 4 | 10 | 1 | 1 |
| Mar 2024 | 124 | 4 | 7 | 2 | 0 |
| Feb 2024 | 116 | 5 | 11 | 1 | 1 |
| Jan 2024 | 122 | 9 | 7 | 3 | 0 |
Top Routes from GCC
Busiest routes to and from Gillette, WY.
| Route | Flights | On-Time | Distance |
|---|---|---|---|
| DEN (Denver) → GCC (Gillette) | 3,944 | 84.6% | 313 mi |
| GCC (Gillette) → DEN (Denver) | 3,914 | 84.8% | 313 mi |
Airports With a Similar On-Time Rate
Other U.S. airports nationwide whose on-time rate is closest to Gillette, WY's 86%.
Other Airports in Wyoming
Compare performance with other Wyoming airports.
Jackson, WY
Jackson · 64,902 flights
Casper, WY
Casper · 20,592 flights
Sheridan, WY
Sheridan · 7,839 flights
Laramie, WY
Laramie · 7,419 flights
Cody, WY
Cody · 7,056 flights
Rock Springs, WY
Rock Springs · 6,604 flights
Riverton/Lander, WY
Riverton/Lander · 6,519 flights
Cheyenne, WY
Cheyenne · 5,577 flights
Keep exploring
More flight data around Gillette, WY.
Wyoming flight data
Statewide on-time and delay aggregates, plus every reporting airport in Wyoming.
View WY data →Airport rankings
See where GCC sits among U.S. airports on on-time rate and average delay.
Best on-time airports →Compare airports
Put GCC head-to-head with another airport on delays and reliability.
Open comparison tool →What the Data Says About GCC
Gillette, WY in Gillette, Wyoming handled 8,123 flights in the Bureau of Transportation Statistics dataset between 2020 and 2025, posting a 86% on-time departure rate. Of those flights, 1,136 experienced delays, 105 were cancelled, and 15 were diverted. The cancellation rate works out to 1.29%, the diversion rate to 0.18%, and the average delay when departures run late is 122.0 minutes. These figures are the baseline for comparing GCC against other airports in the same state and nationally.
Breaking down what drives delays at GCC, Carrier leads the pack. Carrier accounts for 54.7% of total delay minutes, followed by Late Aircraft at 21.1% and NAS (National Aviation System) at 14.2%. Weather contributes 9.9% of delay minutes at this airport, while security holds the smallest share at 0.0%. Travelers often overestimate the weather share; the BTS categorization shows late-arriving aircraft and carrier operations as the larger contributors.
Seasonally, September runs the cleanest at GCC with a 96.7% on-time rate, while February is the roughest at 91.6% - a 5-point swing between best and worst month. Volume peaks in October, when average flights hit 123. The busiest route connecting GCC is to DEN (Denver), with 3,944 flights at a 84.6% on-time rate. Combine these numbers - 86% on-time, 122.0-minute average delay, 1.29% cancellation rate, and you have a concrete picture of departure reliability at Gillette, WY.
Frequently Asked Questions
What is the on-time performance rate at Gillette, WY (GCC)? ▼
What is the most common cause of delays at GCC? ▼
What is the average delay time at GCC? ▼
What is the best month to fly from GCC? ▼
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How many routes operate from GCC? ▼
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Flight Guides
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Using GCC's data
An airport-level on-time rate is a starting point, not a guarantee for your specific flight.
- Check the busiest route from GCC before you book a connection. See top routes
- Travel in September rather than February if your dates are flexible. Seasonal patterns
- Scores vary by airline and route within the same airport; check the specific carrier you're flying. Browse airlines
On-time rate reflects the BTS historical average across all reporting carriers at this airport, not any single flight or airline.
Related
Source: U.S. Bureau of Transportation Statistics (BTS) Airline on-time performance and operational reliability · 2025
Every figure on PlainFlights is rendered directly from BTS On-Time Performance data, no number is typed in by an editor. Airport figures are computed directly from BTS On-Time Performance data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.