DEN to GCC flight delays
Denver, CO (DEN) Gillette, WY (GCC) · 313 miles
710 flights · January 2025 – August 2026 · US Bureau of Transportation Statistics
80.2%
Arrived on time
Within 15 minutes of schedule
0.99%
Cancelled
Share of scheduled flights
78 min
When late, late by
Average across delayed arrivals
16 min
Delay per flight
Averaged over every flight flown
What the record says about this route
The season swings this route hard. In September it ran 29.4 points more punctual than in August — a difference bigger than the one between the best and worst airlines on most routes. If the date is flexible, it is worth more than the carrier.
The shape of the lateness matters here. Flights on this route are not late often, but when they are late they are late by about 78 minutes — long enough to lose a connection or an evening. The on-time percentage looks reassuring and understates the consequence of being on the wrong flight.
Only SkyWest Airlines flies this route in the published record, so there is no choice to weigh — the route's figures and the airline's are the same figures.
The Denver to Gillette route sits close to the middle of the record — neither notably punctual nor notably late.
Which airline should you fly on this route?
Over January 2025 – August 2026, SkyWest Airlines arrived on time most often on DEN to GCC. Flights ran closest to schedule in September and worst in August.
Every airline on DEN to GCC
Ranked by how many flights each one operated. A carrier with fewer than 100 flights in the period is listed but not graded.
| Airline | Flights | On time | Cancelled | Avg delay | Grade |
|---|---|---|---|---|---|
| SkyWest Airlines | 710 | 80.2% | 0.99% | 78 min | C |
Month by month
Share of flights that arrived within 15 minutes of schedule, by month flown.
The return leg
GCC to DEN Gillette back to Denver 83.24% on time BOther routes from Denver
Common questions
Are flights from Denver to Gillette usually delayed?
80.2% of flights on the DEN to GCC route arrived within 15 minutes of schedule, so roughly 2 in every ten arrived late. That is better than the average route in this record.
Which airlines fly from Denver to Gillette?
Only SkyWest Airlines appears in the published record on this route, with 710 flights and 80.2% arriving on time.
How often are DEN to GCC flights cancelled?
0.99% of scheduled flights did not operate — about 10 in every thousand. That is in the normal range.
What is the best month to fly Denver to Gillette?
September, when 95% of flights arrived on time. The worst was August at 65.6%.
When DEN to GCC flights are late, how late are they?
About 78 minutes on average across the flights that arrived more than 15 minutes behind schedule.
What these figures do and do not tell you
Everything on this page is counted from the flights that actually operated on DEN to GCC during January 2025 – August 2026, as reported by the airlines to the US Bureau of Transportation Statistics. "On time" is the federal definition: arriving at the gate within 15 minutes of the scheduled time.
A route's record is a description of the past, not a forecast. Weather, air traffic control and the aircraft's earlier flights that day drive most delays, and none of them are predictable from a historical rate. What the record does tell you is whether this route runs late more often than others, and which carrier on it has the better history — which is the part you can actually act on when you book.
Cancellations are counted separately from delays because they are a different problem for a traveller: a late flight still gets you there. How the grade is calculated →