Carrier route record
OOGJT→DEN
SkyWest Airlines · Grand Junction to Denver
- Flights
- 1,550
- Period
- September 2025 to August 2026
- Share of route
- 68%
- Carriers
- 2
Historical statistics for September 2025 to August 2026, not live status. For today’s flights, check with SkyWest Airlines.
SkyWest on GJT to DEN lands a B, level with the national rate of 77.3%. Roughly one flight in four arrives 15 minutes late or worse, and those flights are late by a little over an hour on average. That rests on 1,550 flights, with a median arrival 7 minutes early.
The US average over the same twelve months is 77.3%, so there is little to separate SkyWest on GJT to DEN from the country as a whole. The variation that matters here is internal: which carrier, and what time of day.
Key figures
On time
77.0%
Arrivals under 15 minutes late, of 1,519 completed flights
Avg delay
80 min
Across delayed arrivals only, not all flights
Cancelled
1.81%
National rate is 1.89%
Whole route
79.6%
Every carrier on GJT to DEN, 2,282 flights
These figures cover 1,550 flights between September 2025 and August 2026. Beyond the headline rate, 9.0% of arrivals land a full hour or more behind schedule, against 8.3% nationally.
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Carrier by carrier
SkyWest against every carrier on GJT to DEN
SkyWest flew 1,550 of the 2,282 flights on GJT to DEN, most of the route. Its 77.0% on time is 3 points worse than the route as a whole, which runs 79.6%. Ranked by on-time rate it is last of two carriers on the route, where the range runs from United at 85.0% to SkyWest at 77.0%.
Only one carrier clears this site's 365-flight floor here, so there is no comparison to draw. The table below is the full picture.
| Airline | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| United Airlines | 732 | 85.0% | 61 min | 0.41% | A+ |
| SkyWest Airlines (this page) | 1,550 | 77.0% | 80 min | 1.81% | B |
Flight by flight
SkyWest flight numbers on GJT to DEN
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Departure window
When SkyWest runs best on this route
Departure time matters more here than the choice of carrier. The gap between the best and worst window is 25 points, against half a point between the best and worst carrier.
- 5am–8am319 flights87.5%
- 8am–11am143 flights89.4%
- 11am–2pm364 flights84.3%
- 2pm–5pm361 flights67.6%
- 5pm–8pm363 flights64.3%
- 8pm–5am—
Scale runs 55% to 95%. Rows with fewer than 30 flights show a dash.
The 5pm–8pm window is where this operation falls apart: 64.3% on time, against 89.4% for the 8am–11am slot. By evening the aircraft flying these rotations have absorbed a full day of small delays and there is no slack left to recover in. The 11am–2pm window is the busiest, with 364 flights scheduled in it.
Across the year
SkyWest on GJT to DEN through the year
August is the worst month at 69.2% on time, 19 points below November, the best at 88.2%. Summer afternoon convection and peak-season schedules land on the same weeks every year, so this is a pattern you can book around rather than a run of bad luck. May was the busiest month here, with 152 flights.
The day of the week is close to irrelevant here: 3 points separates the best day from the worst. Weekly demand peaks are not what drives the delays on this operation.
Arrival by arrival
How late SkyWest on GJT to DEN runs when it is late
SkyWest on GJT to DEN often beats the schedule: 556 of 1,519 completed flights, 37%, arrived 15 minutes or more early. The 350 late arrivals split 127 under half an hour, 86 between 30 and 60 minutes, and 137 an hour or more.
- 15+ min early556 flights36.6%
- Within 15 min613 flights40.4%
- 15–29 min late127 flights8.4%
- 30–59 min late86 flights5.7%
- 1–2 hours late74 flights4.9%
- 2+ hours late63 flights4.1%
Scale runs 0% to 100%.
Share of 1,519 completed flights by arrival against schedule.
43 of 293 late departures made up the time and arrived on time, 15% of them. In the other direction, 100 flights left on time yet arrived 15 minutes late or more, so that delay built up after pushback: in the air, in a holding pattern or on the ground at DEN.
The worst days
Worst days for SkyWest on GJT to DEN
The latest arrival of the period was on 11 September 2025, 19 hours 59 minutes behind schedule; most of its delay minutes were filed as carrier-caused (crew, maintenance, fuelling, baggage). The same cause led on four of the five worst days.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 11 September 2025 | 19 hours 59 minutes | Carrier |
| 26 April 2026 | 15 hours 21 minutes | Late-arriving aircraft |
| 4 March 2026 | 8 hours | Carrier |
| 15 October 2025 | 7 hours 21 minutes | Carrier |
| 9 August 2026 | 7 hours 15 minutes | Carrier |
Delay causes
Why SkyWest runs late on this route
Carriers report a reason for every delay minute they cause, in five DOT categories. The split below is by minutes, not by number of flights, so a handful of very long weather delays weighs as much as many short ones. It covers 28,000 reported delay minutes.
- 37%Carrier
- 27%Late-arriving aircraft
- 27%National Airspace System
- 9%Extreme weather
- 0%Security
The largest share of delay minutes, 37%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 10,000 of the 28,000 delay minutes reported here. The split is drawn from 27,849 reported delay minutes.
Cancellations sit at 1.81% against a national 1.89%, which is ordinary. Diversions add another 0.19%.
Connections and stage length
What a delay here costs
9.0% of arrivals land a full hour or more behind schedule, against 8.3% nationally. Ninety minutes is the honest minimum for a connection here, and two hours if the onward flight is on a separate ticket.
At 212 miles this is a short hop, and stage length matters more than it looks. A flight this short spends under two hours in the air, which leaves almost nothing to claw back a late pushback with. Delay here is decided on the ground, in the turn, which is why the 8am–11am window matters as much as it does.
The return leg is a different operation and performs like one: it runs 80.9% on time across 1,550 flights, 4 points above this direction. Departure banks, aircraft rotations and the congestion at each end all differ, so scoring the two directions together would average away a real 4 points of difference.
The sample behind these figures is 1,550 flights, enough that the headline rate is stable to within roughly a point. The hour-block and month splits divide that further, so read the thinner bars with more caution than the headline.
What to do with this
Booking SkyWest on GJT to DEN
Put together: the calendar is the biggest lever here, not the carrier or the hour. November runs 88.2% on time and August 69.2%, a swing of 19 points. If the dates move at all, move them out of August before you think about anything else. 1,519 completed flights over 12 months sit behind that.
Related
Where to go next
Source: US DOT Bureau of Transportation Statistics, on-time performance data, September 2025 to August 2026. Last updated ; recomputed monthly. How this data is collected.