Carrier route record
UAJAC→ORD
United Airlines · Jackson to Chicago
- Flights
- 422
- Period
- September 2025 to August 2026
- Share of route
- 51%
- Carriers
- 2
Historical statistics for September 2025 to August 2026, not live status. For today’s flights, check with United Airlines.
United on JAC to ORD lands a B, level with the national rate of 77.3%. About one flight in four arrives 15 minutes late or worse, and those flights are late by close to two hours on average. That rests on 422 flights, with a median arrival 8 minutes early.
The US average over the same twelve months is 77.3%, so there is little to separate United on JAC to ORD from the country as a whole. The variation that matters here is internal: which carrier, and what time of day.
Key figures
On time
76.7%
Arrivals under 15 minutes late, of 407 completed flights
Avg delay
106 min
Across delayed arrivals only, not all flights
Cancelled
2.61%
National rate is 1.89%
Whole route
70.2%
Every carrier on JAC to ORD, 823 flights
These figures cover 422 flights between September 2025 and August 2026. Beyond the headline rate, 10.3% of arrivals land a full hour or more behind schedule, against 8.3% nationally.
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Carrier by carrier
United against every carrier on JAC to ORD
United flew 422 of the 823 flights on JAC to ORD, most of the route. Its 76.7% on time is 7 points better than the route as a whole, which runs 70.2%. Ranked by on-time rate it is first of two carriers on the route, where the range runs from United at 76.7% to American at 63.5%.
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) | 422 | 76.7% | 106 min | 2.61% | B |
| American Airlines | 401 | 63.5% | 123 min | 1.50% | D |
Timetable by Aviasales, a Travelpayouts partner. Booking through it may earn this site a commission at no cost to you; it changes no figure here.
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 422 flights.
- 5am–8am104 flights78.6%
- 8am–11am44 flights76.7%
- 11am–2pm274 flights75.9%
- 2pm–5pm—
- 5pm–8pm—
- 8pm–5am—
Scale runs 65% to 85%. Rows with fewer than 30 flights show a dash.
The 5am–8am window is the strongest at 78.6% on time. The full set of windows spans 3 points.
Across the year
United on JAC to ORD through the year
- Jul–Sep 202556 flights80.4%
- Oct–Dec 202548 flights66.0%
- Jan–Mar 2026105 flights81.6%
- Apr–Jun 202689 flights76.5%
- Jul–Sep 2026124 flights75.0%
Scale runs 60% to 85%.
Monthly volumes are too low here to break the year into twelve reliable readings. What the twelve-month total says is 76.7% on time across 422 flights.
United on JAC to ORD did not run the same all year. Its best quarter was Jan–Mar 2026 at 81.6% on time and its weakest Oct–Dec 2025 at 66.0%, a swing of 16 points on roughly 84 flights a quarter. The twelve-month rate averages over that, so if you are flying in a weak quarter the quarter's own figure is the better guide.
Across the week, Tuesday is the strongest day at 87.3% on time and Friday the weakest at 67.2%, a spread of 20 points.
Arrival by arrival
How late United on JAC to ORD runs when it is late
United on JAC to ORD often beats the schedule: 131 of 407 completed flights, 32%, arrived 15 minutes or more early. The 95 late arrivals split 21 under half an hour, 32 between 30 and 60 minutes, and 42 an hour or more.
- 15+ min early131 flights32.2%
- Within 15 min181 flights44.5%
- 15–29 min late21 flights5.2%
- 30–59 min late32 flights7.9%
- 1–2 hours late19 flights4.7%
- 2+ hours late23 flights5.7%
Scale runs 0% to 100%.
Share of 407 completed flights by arrival against schedule.
25 of 98 late departures made up the time and arrived on time, 26% of them. In the other direction, 22 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 ORD.
The worst days
Worst days for United on JAC to ORD
The latest arrival of the period was on 3 April 2026, 19 hours 19 minutes behind schedule; most of its delay minutes were filed as extreme weather. The five worst days are spread across April, March, February, January and May, with no single month standing out.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 3 April 2026 | 19 hours 19 minutes | Extreme weather |
| 15 March 2026 | 10 hours 11 minutes | National Airspace System |
| 25 February 2026 | 9 hours 29 minutes | Carrier |
| 30 January 2026 | 8 hours 51 minutes | National Airspace System |
| 21 May 2026 | 6 hours 9 minutes | Carrier |
Delay causes
Why United runs late on this route
National Airspace System accounts for 42% of the 10,000 delay minutes carriers reported here, and the remaining four split what is left.
- 42%National Airspace System
- 26%Carrier
- 19%Late-arriving aircraft
- 13%Extreme weather
Extreme weather accounts for 13% of delay minutes, well above the single-digit share typical across the system. Weather delays are lumpy: they arrive as whole bad days rather than as a steady drag, so the monthly strip above is the more useful view of the risk. The national share is 6%, so this operation carries roughly 2.1 times the usual weather exposure. The split is drawn from 10,026 reported delay minutes.
42% of delay minutes are charged to the National Airspace System: air traffic volume, runway configuration, ground stops. No carrier can price its way out of that, which is why airport choice moves the number here more than carrier choice does. That is 4,238 minutes out of 10,000, against a national NAS share of 21%.
Cancellations run at 2.61%, against 1.89% nationally. That is about one flight in 40 cancelled outright. A cancelled flight is invisible in every on-time figure on this page, so the punctuality numbers above describe only the flights that actually operated.
Connections and stage length
What a delay here costs
10.3% 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.
The 1,162 miles between these two airports put this in the middle of the US network, around two and a half to three hours of block time. That is enough cruise to absorb a ten-minute late pushback and not enough to absorb thirty.
The return leg is a different operation and performs like one: it runs 67.6% on time across 421 flights, 9 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 9 points of difference.
One caution: this is a thin sample. 422 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 JAC to ORD
Put together: treat all of this as provisional. 422 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 76.7% headline is the most reliable number on the page; the hour and month splits below it are built on a few dozen flights each. 407 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.