Route · DEN → GCC · 2020–2025 BTS data
Denver to Gillette
According to PlainFlights' route traffic ranking (BTS On-Time Performance total flights), DEN to GCC (Denver to Gillette) ranks #2919 of 4927 tracked domestic routes by total flights (most flights = #1).
Data updated 2026-06-13
- 84.6%
- On-time
- +5.6 pts
- vs US avg
- 87 min
- Delay when late
- 3,944
- Flights
- #2919 of 4927
- Corpus placement
Cancelled
1.6%
Best Month
Dec 2024 95%
Worst Month
Aug 2025 66%
Distance
313 mi
Carriers
1
Monthly Performance
Recent 24 months of route data.
| Period | Flights | Delayed | Cancelled | Diverted | Carriers |
|---|---|---|---|---|---|
| Dec 2025 | 62 | 12 | 1 | 0 | OO |
| Nov 2025 | 60 | 4 | 0 | 0 | OO |
| Oct 2025 | 62 | 7 | 0 | 0 | OO |
| Sep 2025 | 60 | 3 | 0 | 0 | OO |
| Aug 2025 | 62 | 21 | 1 | 0 | OO |
| Jul 2025 | 62 | 18 | 1 | 1 | OO |
| Jun 2025 | 60 | 18 | 0 | 0 | OO |
| May 2025 | 62 | 18 | 0 | 0 | OO |
| Apr 2025 | 60 | 16 | 1 | 0 | OO |
| Mar 2025 | 62 | 6 | 0 | 0 | OO |
| Feb 2025 | 56 | 8 | 4 | 2 | OO |
| Jan 2025 | 62 | 15 | 5 | 0 | OO |
| Dec 2024 | 62 | 3 | 0 | 0 | OO |
| Nov 2024 | 59 | 11 | 2 | 0 | OO |
| Oct 2024 | 62 | 8 | 1 | 0 | OO |
| Sep 2024 | 60 | 8 | 0 | 0 | OO |
| Aug 2024 | 64 | 10 | 0 | 0 | OO |
| Jul 2024 | 62 | 13 | 0 | 0 | OO |
| Jun 2024 | 60 | 13 | 0 | 0 | OO |
| May 2024 | 62 | 7 | 1 | 0 | OO |
| Apr 2024 | 60 | 10 | 1 | 0 | OO |
| Mar 2024 | 62 | 7 | 2 | 0 | OO |
| Feb 2024 | 58 | 11 | 1 | 0 | OO |
| Jan 2024 | 61 | 7 | 3 | 0 | OO |
DEN–GCC seasonal on-time pattern
Best: September (91.0%) · weakest: July (78.9%)
Strongest calendar month
September
91.0% on-time · ~55 flights/mo
Busiest calendar month
June
~62 flights/mo avg
Weakest calendar month
July
78.9% on-time · ~59 flights/mo
Cancellation Rate
1.6%
24 of 1,462 flights
Diversion Rate
0.2%
3 of 1,462 flights
Explore origin & destination
On-time and delay data for the airports this route connects.
DEN - Denver
Full on-time, delay-cause, and seasonal performance for Denver, CO.
DEN on-time profileGCC - Gillette
Full on-time, delay-cause, and seasonal performance for Gillette, WY.
GCC on-time profileCompare the two airports
See DEN and GCC side by side on delays, cancellations, and reliability.
Compare DEN vs GCCOrigin-hub reliability standing
Mid-pack among DEN departures
From DEN, this corridor sits with 133 other 75–85% on-time routes out of 168 tracked departures, not the hub's reliability leaders (8 at ≥85%) and not the softest ( 27 below 75%). Destination: Gillette · fleet on-time rank #1358 of 4927.
Similar routes
Other BTS-tracked routes with comparable performance or trip length to DEN–GCC.
Routes with a similar on-time rate
What the Data Says About DEN to GCC
Bureau of Transportation Statistics records show Denver to Gillette (DEN to GCC) running a 84.6% on-time rate over 3,944 tracked flights, on the stronger end of a typical domestic pairing. When flights do run late, the average delay is 87.4 minutes. The 313-mile corridor is served by 1 carrier, and over the last 24 months 1.6% of 1,462 flights were cancelled, 0.2% diverted.
The monthly split is wide on this route: Dec 2024 posted the strongest performance at 95% on-time, while Aug 2025 came in at just 66% - a 29-point swing worth factoring into travel timing.
On the multi-year calendar, DEN–GCC peaks in September at 91.0% on-time while June carries the heaviest traffic (~62 flights per month) ; the softest month is July at 78.9%, a 12.1-point swing that repeats because the corridor's weather and holiday mix stays stable year to year.
Frequently Asked Questions
Where does DEN to GCC rank among US routes by traffic? ▼
How often are flights delayed from DEN to GCC? ▼
What is the cancellation rate for DEN to GCC? ▼
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When is the best time to fly from DEN to GCC? ▼
Airports on this route
Data source
Data Source: Bureau of Transportation Statistics (BTS), On-Time Performance Data. Statistics reflect cumulative performance across all available reporting periods.
Read our methodology - how this data is sourced, computed, and verified.
Using DEN–GCC data
DEN–GCC runs 5.6 pts above the national 79% average; the remaining risk is month-to-month swing and carrier mix, not a weak headline rate.
- Compare DEN and GCC airport profiles: delay causes and top routes differ even on the same corridor. DEN airport
- If your dates flex, September (91.0% on-time) beats July (78.9%) on this corridor. Seasonal chart
- 4 other routes post a similar 84.6% on-time rate; compare before you commit to this pairing. Similar routes
On-time rate reflects the BTS historical average across all reporting carriers on this origin–destination pair, not any single flight or booking recommendation.
Every figure on PlainFlights is rendered directly from BTS On-Time Performance data, no number is typed in by an editor. This page aggregates this specific route's on-time performance and monthly trend, live from the dataset. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.