Carrier route record
UAGJT→DEN
United Airlines · Grand Junction to Denver
- Flights
- 733
- Period
- July 2025 to June 2026
- Share of route
- 33%
- Carriers
- 2
Historical statistics for July 2025 to June 2026, not live status. For today’s flights, check with United Airlines.
United on GJT to DEN lands a B+, 4 points better than the national rate of 77.6%. Roughly one flight in five arrives 15 minutes late or worse, and those flights are late by a little over an hour on average. That is a workable record, not a spotless one. That rests on 733 flights, with a median arrival 10 minutes early.
Set against the rest of the country, United's GJT to DEN record is 4 points better than the US average of 77.6%. That gap is worth roughly 40 fewer late arrivals for every thousand flights.
Key figures
On time
81.6%
Arrivals under 15 minutes late, of 729 completed flights
Avg delay
69 min
Across delayed arrivals only, not all flights
Cancelled
0.41%
National rate is 1.81%
Whole route
77.6%
Every carrier on GJT to DEN, 2,229 flights
These figures cover 733 flights between July 2025 and June 2026. The median arrival is 10 minutes early, which is the part an average hides: most flights here are fine, and the on-time rate is decided by a tail of badly late ones. On-time means under 15 minutes late, the DOT's own threshold.
Carrier by carrier
United against every carrier on GJT to DEN
United flew 733 of the 2,229 flights on GJT to DEN, about 33% of it. Its 81.6% on time is 4 points better than the route as a whole, which runs 77.6%. Ranked by on-time rate it is first of two carriers on the route, where the range runs from United at 81.6% to SkyWest at 75.5%.
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 (this page) | 733 | 81.6% | 69 min | 0.41% | B+ |
| SkyWest Airlines | 1,496 | 75.5% | 78 min | 2.01% | B |
Flight by flight
United flight numbers on GJT to DEN
Departure window
When United runs best on this route
Departure time is the single lever a traveller controls, and it moves the odds more than most people expect. Each bar below is the on-time rate for flights scheduled to leave inside that window, across 733 flights.
- 5am–8am365 flights81.9%
- 8am–11am—
- 11am–2pm364 flights81.4%
- 2pm–5pm2 flights—
- 5pm–8pm—
- 8pm–5am2 flights—
Scale runs 75% to 85%. Rows with fewer than 30 flights show a dash.
The 5am–8am window is the strongest at 81.9% on time. The full set of windows spans half a point.
Across the year
United on GJT to DEN through the year
July is the worst month at 62.3% on time, 33 points below March, the best at 95.1%. 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. January was the busiest month here, with 62 flights.
Across the week, Sunday is the strongest day at 88.6% on time and Saturday the weakest at 71.4%. 17 points is a smaller lever than departure hour, but it is free.
Delay causes
Why United 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 9,269 reported delay minutes.
- 36%Late-arriving aircraft
- 30%National Airspace System
- 27%Carrier
- 7%Extreme weather
36% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. That is a cascade, and cascades start small and grow through the day. Across 9,269 reported delay minutes here, that single category outweighs weather by 5 to one. It is the strongest argument for booking the first departure of the morning, when the aircraft has been sitting at the gate overnight with nothing to inherit. The split is drawn from 9,269 reported delay minutes.
The practical consequence: the 5am–8am departure is the one that starts clean. Its aircraft has no earlier leg to be late from, which is exactly why that window shows 81.9% on time here.
Cancellations are rare at 0.41%, below the national 1.81% and low enough to earn the plus on the grade. Roughly one flight in 100 is called off; the risk here is arriving late, not not arriving.
Connections and stage length
What a delay here costs
Badly late arrivals are rare here: only 4.5% land an hour or more behind schedule, against 8.1% nationally. Connections built on this flight are about as safe as US domestic connections get, though a cancelled flight still ignores every layover you give it.
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 5am–8am window matters as much as it does.
The return leg is a different operation and performs like one: it runs 77.3% on time across 733 flights, 4 points below 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.
One caution: this is a thin sample. 733 flights over twelve months is enough to clear this site's floor but not enough to pin the rate down tightly, and a single bad week moves it by more than a point. Treat the grade as a rough reading.
What to do with this
Booking United on GJT to DEN
Put together: treat all of this as provisional. 733 flights over twelve months is enough to clear this site's floor and not enough to be confident to better than a couple of points. The 81.6% headline is the most reliable number on the page; the hour and month splits below it are built on a few dozen flights each. 729 completed flights over 12 months sit behind that.
Related
Where to go next
Source: US DOT Bureau of Transportation Statistics, on-time performance data, July 2025 to June 2026. Last updated 15 September 2026; recomputed monthly. How this data is collected.