Carrier route record
UAORD→JAC
United Airlines · Chicago to Jackson
- Flights
- 421
- 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 ORD to JAC draws a C. About one flight in three arrives at least 15 minutes late, and the typical late arrival is about an hour behind schedule. Build slack into anything you connect to. That rests on 421 flights, with a median arrival 2 minutes late.
The national on-time rate over the same period is 77.3%, so United on ORD to JAC runs 10 points behind the country as a whole. Across a thousand flights that is about 97 extra late arrivals.
Key figures
On time
67.6%
Arrivals under 15 minutes late, of 410 completed flights
Avg delay
61 min
Across delayed arrivals only, not all flights
Cancelled
1.19%
National rate is 1.89%
Whole route
67.9%
Every carrier on ORD to JAC, 822 flights
These figures cover 421 flights between September 2025 and August 2026. Beyond the headline rate, 10.5% of arrivals land a full hour or more behind schedule, against 8.3% nationally.
Fare search by Aviasales, a Travelpayouts partner. Booking through it may earn this site a commission at no cost to you; it changes no figure here.
Carrier by carrier
United against every carrier on ORD to JAC
United flew 421 of the 822 flights on ORD to JAC, most of the route. Its 67.6% on time is about level with the route as a whole at 67.9%. Ranked by on-time rate it is last of two carriers on the route, where the range runs from American at 68.3% to United at 67.6%.
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 |
|---|---|---|---|---|---|
| American Airlines | 401 | 68.3% | 111 min | 1.00% | C |
| United Airlines (this page) | 421 | 67.6% | 61 min | 1.19% | C |
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 matters more here than the choice of carrier. The gap between the best and worst window is 21 points, against half a point between the best and worst carrier.
- 5am–8am—
- 8am–11am274 flights74.8%
- 11am–2pm—
- 2pm–5pm147 flights53.6%
- 5pm–8pm—
- 8pm–5am—
Scale runs 45% to 80%. Rows with fewer than 30 flights show a dash.
Book the morning departure. Flights leaving between 8am–11am arrive on time 74.8% of the time, against 53.6% for the afternoon window. That is 21 points of difference for no extra money, and it comes from the same aircraft having had no earlier flight to fall behind on. The 8am–11am window is the busiest, with 274 flights scheduled in it.
Across the year
United on ORD to JAC through the year
- Jul–Sep 202555 flights69.1%
- Oct–Dec 202548 flights56.5%
- Jan–Mar 2026104 flights71.3%
- Apr–Jun 202690 flights72.4%
- Jul–Sep 2026124 flights64.5%
Scale runs 50% to 80%.
Monthly volumes are too low here to break the year into twelve reliable readings. What the twelve-month total says is 67.6% on time across 421 flights.
United on ORD to JAC did not run the same all year. Its best quarter was Apr–Jun 2026 at 72.4% on time and its weakest Oct–Dec 2025 at 56.5%, 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, Monday is the strongest day at 80.0% on time and Friday the weakest at 53.8%, a spread of 26 points.
Arrival by arrival
How late United on ORD to JAC runs when it is late
The 133 late arrivals split 49 under half an hour, 41 between 30 and 60 minutes, and 43 an hour or more.
- 15+ min early70 flights17.1%
- Within 15 min207 flights50.5%
- 15–29 min late49 flights12.0%
- 30–59 min late41 flights10.0%
- 1–2 hours late27 flights6.6%
- 2+ hours late16 flights3.9%
Scale runs 0% to 100%.
Share of 410 completed flights by arrival against schedule.
Time lost at the gate mostly stays lost. Of 103 departures that left 15 minutes late or more, only 12 made it up before arrival. In the other direction, 42 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 JAC.
The worst days
Worst days for United on ORD to JAC
The latest arrival of the period was on 3 April 2026, 4 hours 32 minutes behind schedule; most of its delay minutes were filed as a late-arriving aircraft. Three of the five worst days fell in August 2026.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 3 April 2026 | 4 hours 32 minutes | Late-arriving aircraft |
| 9 August 2026 | 4 hours 12 minutes | Late-arriving aircraft |
| 2 June 2026 | 3 hours 59 minutes | Late-arriving aircraft |
| 11 August 2026 | 3 hours 55 minutes | Late-arriving aircraft |
| 13 August 2026 | 3 hours 49 minutes | Late-arriving aircraft |
Delay causes
Why United runs late on this route
Late-arriving aircraft accounts for 53% of the 8,151 delay minutes carriers reported here, and the remaining four split what is left.
- 53%Late-arriving aircraft
- 26%Carrier
- 19%National Airspace System
- 3%Extreme weather
53% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 8,151 reported delay minutes here, that single category outweighs weather by 19 to one. The split is drawn from 8,151 reported delay minutes.
The practical consequence: the 8am–11am departure is the one that starts clean. Its aircraft has no earlier leg to be late from, which is exactly why that window shows 74.8% on time here.
Cancellations sit at 1.19% against a national 1.89%, which is ordinary. Diversions add another 1.43%.
Connections and stage length
What a delay here costs
10.5% 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 76.7% on time across 422 flights, 9 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 9 points of difference.
One caution: this is a thin sample. 421 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 ORD to JAC
Put together: treat all of this as provisional. 421 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 67.6% headline is the most reliable number on the page; the hour and month splits below it are built on a few dozen flights each. 410 completed flights over 12 months sit behind that.
Related
Where to go next
- ORD to JAC, every carrier
- United on JAC to ORD, the return leg
- American Airlines on ORD to JAC68.3%
- United Airlines network-wide record
- Chicago O'Hare International (ORD) delay statistics
- Flying to ski country: which routes into the mountains run on time
- Why the first flight of the morning is statistically safest
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.