Carrier route record
UADEN→JAC
United Airlines · Denver to Jackson
- Flights
- 1,134
- Period
- July 2025 to June 2026
- Share of route
- 69%
- Carriers
- 2
Historical statistics for July 2025 to June 2026, not live status. For today’s flights, check with United Airlines.
United on DEN to JAC lands a B+, level with the national rate of 77.6%. Roughly one flight in four arrives 15 minutes late or worse, and those flights are late by about an hour on average. That is a workable record, not a spotless one. That rests on 1,134 flights, with a median arrival 4 minutes early.
The US average over the same twelve months is 77.6%, so there is little to separate United on DEN to JAC from the country as a whole. The variation that matters here is internal: which carrier, and what time of day.
Key figures
On time
76.9%
Arrivals under 15 minutes late, of 1,118 completed flights
Avg delay
64 min
Across delayed arrivals only, not all flights
Cancelled
0.88%
National rate is 1.81%
Whole route
81.6%
Every carrier on DEN to JAC, 1,634 flights
These figures cover 1,134 flights between July 2025 and June 2026. The median arrival is 4 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 DEN to JAC
United flew 1,134 of the 1,634 flights on DEN to JAC, most of the route. Its 76.9% on time is 5 points worse than the route as a whole, which runs 81.6%. Ranked by on-time rate it is last of two carriers on the route, where the range runs from SkyWest at 92.3% to United at 76.9%.
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 |
|---|---|---|---|---|---|
| SkyWest Airlines | 500 | 92.3% | 47 min | 2.20% | A |
| United Airlines (this page) | 1,134 | 76.9% | 64 min | 0.88% | B+ |
Flight by flight
United flight numbers on DEN to JAC
Departure window
When United runs best on this route
Departure time matters more here than the choice of carrier. The gap between the best and worst window is 12 points, against half a point between the best and worst carrier. Each bar is the on-time rate for flights scheduled inside that window.
- 5am–8am—
- 8am–11am4 flights—
- 11am–2pm581 flights81.7%
- 2pm–5pm185 flights69.6%
- 5pm–8pm364 flights72.6%
- 8pm–5am—
Scale runs 60% to 85%. Rows with fewer than 30 flights show a dash.
The best window here is not the first bank but the 11am–2pm slot at 81.7% on time, ahead of 2pm–5pm at 69.6%. Where the curve peaks mid-day rather than at dawn, the constraint is usually congestion at one end rather than the aircraft's own rotation. The 11am–2pm window is the busiest, with 581 flights scheduled in it.
Across the year
United on DEN to JAC through the year
July is the worst month at 60.2% on time, 33 points below November, the best at 93.1%. 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. June was the busiest month here, with 124 flights.
Across the week, Monday is the strongest day at 80.0% on time and Saturday the weakest at 73.2%. 7 points is a smaller lever than departure hour, but it is free.
Delay causes
Why United runs late on this route
One category carries most of the weight here. Late-arriving aircraft accounts for 46% of the 16,000 delay minutes carriers reported, and the remaining four split what is left. The split is by minutes rather than by flights, so a few very long delays count for as much as many short ones.
- 46%Late-arriving aircraft
- 34%Carrier
- 14%National Airspace System
- 6%Extreme weather
46% 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 16,000 reported delay minutes here, that single category outweighs weather by 7 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 16,437 reported delay minutes.
The largest share of delay minutes, 34%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. Unlike weather, that is a management outcome, and it is the category where the gap between two carriers on the same schedule is genuinely earned. It accounts for 5,636 of the 16,000 delay minutes reported here.
Cancellations are rare at 0.88%, 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
7.2% of arrivals land an hour or more late, close to the national 8.1%. That is the figure that decides a connection, and it says a 60 to 75 minute layover is reasonable here while anything under 45 minutes is a bet. Most delays on this route last about an hour, which a normal layover absorbs.
At 406 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 11am–2pm window matters as much as it does.
The return leg is a different operation and performs like one: it runs 72.9% on time across 1,133 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.
The sample behind these figures is 1,134 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 United on DEN to JAC
Put together: the calendar is the biggest lever here, not the carrier or the hour. November runs 93.1% on time and July 60.2%, a swing of 33 points. If the dates move at all, move them out of July before you think about anything else. 1,118 completed flights over 12 months sit behind that.
Related
Where to go next
- DEN to JAC, every carrier
- United on JAC to DEN, the return leg
- SkyWest Airlines on DEN to JAC92.3%
- United Airlines network-wide record
- Denver International (DEN) delay statistics
- Why the first flight of the morning is statistically safest
- The best time of day to fly, according to 7.04 million flight records
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.