Flight number record
UA 2258
United Airlines · Denver to Chicago
- Route
- DEN → ORD
- Departs
- 19:10
- Flights
- 278
- Period
- July 2025 to June 2026
Historical statistics for July 2025 to June 2026, not live status. For today’s UA 2258, check with United Airlines.
UA 2258 draws a C. About one flight in three arrives at least 15 minutes late, and the typical late arrival is a little over an hour behind schedule. Build slack into anything you connect to. That rests on 278 flights, with a median arrival 3 minutes early.
The national on-time rate over the same period is 77.6%, so UA 2258 runs 10 points behind the country as a whole. Across a thousand flights that is about 98 extra late arrivals.
Key figures
On time
67.8%
Arrivals under 15 minutes late, of 273 completed flights
Avg delay
80 min
Across delayed arrivals only, not all flights
Cancelled
1.44%
National rate is 1.81%
1 hour+ late
11.4%
National rate is 8.1%
These figures cover 278 flights between July 2025 and June 2026. Beyond the headline rate, 11.4% of arrivals land a full hour or more behind schedule. That is the number that wrecks a connection, and it is not visible in an on-time percentage alone.
Schedule
When UA 2258 flies
UA 2258 flies DEN to ORD without a single fixed slot. Its most common scheduled departure was 19:10, used on 72 of 278 flights, with 19:00 (31 flights) and 19:21 (29 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.
- Departs 19:1072 flights25.9%
- Departs 19:0031 flights11.2%
- Departs 19:2129 flights10.4%
Scale runs 0% to 100%. Rows with fewer than 30 flights show a dash.
Share of scheduled departures at each local time. Times used on fewer than one flight in ten are not listed.
A 19:10 departure sits in the 5pm–8pm window. Across every US flight scheduled in that window the on-time rate is 68.2%, and UA 2258 runs level with that at 67.8%. By that time of day most aircraft have flown several legs already, and whatever went wrong earlier is still in the schedule.
Against the route
UA 2258 next to DEN to ORD
Every carrier on DEN to ORD combined arrived on time 71.1% of the time across 6,161 flights, so UA 2258 is 3 points behind it. United flew 3,756 flights on the same city pair under all its flight numbers, including this one, and those ran 71.4% on time. Across its whole network United Airlines managed 79.0%, which this flight trails by 11 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| UA 2258thin sample | 278 | 67.8% | 80 min | 1.44% | C |
| All United Airlines on DEN–ORD | 3,756 | 71.4% | 79 min | 0.75% | C+ |
| All carriers on DEN–ORD | 6,161 | 71.1% | 88 min | 1.07% | C |
| United Airlines, whole network | 821,041 | 79.0% | 72 min | 1.01% | B |
Across the year
UA 2258 quarter by quarter
UA 2258 did not run the same all year. Its best quarter was Apr–Jun 2026 at 77.2% on time and its weakest Jul–Sep 2025 at 56.0%, a swing of 21 points on roughly 70 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.
- Jul–Sep 202585 flights56.0%
- Oct–Dec 202565 flights70.8%
- Jan–Mar 202646 flights68.9%
- Apr–Jun 202682 flights77.2%
Scale runs 50% to 85%. Rows with fewer than 30 flights show a dash.
By weekday, UA 2258 ranged from 63.4% on Thursday to 70.5% on Friday. With about 40 flights behind each day, a spread of 7 points is inside normal variation, so the day you fly is not worth changing for this flight.
Delay causes
Why UA 2258 runs late
One category carries most of the weight here. Late-arriving aircraft accounts for 47% of the 7,010 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.
- 47%Late-arriving aircraft
- 31%National Airspace System
- 23%Carrier
- 0%Extreme weather
47% 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 7,010 reported delay minutes here, that single category outweighs weather by 47 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 7,010 delay minutes reported on UA 2258.
Cancellations sit at 1.44% against a national 1.81%, which is ordinary. Diversions add another 0.36%.
Connections and routes
What a delay on this flight costs
For anyone connecting, the number to weigh is not the on-time rate but the tail behind it. 11.4% of arrivals land a full hour or more behind schedule, against 8.1% nationally. A 45-minute layover does not survive that, and no amount of walking quickly changes it. Ninety minutes is the honest minimum here, and two hours if the onward flight is on a separate ticket.
The 888 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. It is also long enough that the aircraft usually flies three or four legs a day rather than six, which slows how fast delay compounds.
The same number turns up on four other city pairs in the data, including BZN to DEN (118), SEA to DEN (37) and IAH to TPA (16), but none flew often enough under UA 2258 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to DEN to ORD only.
One caution: this is a thin sample. 278 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 UA 2258
For a booking, read UA 2258 as 67.8% on time with 1.44% cancelled over 278 flights. Those are rates from the past twelve months, not a forecast for any particular day.
Related
Where to go next
- DEN to ORD, every carrier and departure
- ORD to DEN, the return direction
- United Airlines 2865 on the same route78.2%
- United Airlines 2329 on the same route82.2%
- United Airlines 1023 on the same route59.8%
- United Airlines 617 on the same route66.5%
- United Airlines 1377 on the same route87.4%
- American Airlines 2771 on the same route87.5%
- Denver International (DEN) delay statistics
- Chicago O'Hare International (ORD) delay statistics
- United Airlines on-time record
- Every United Airlines flight number with a record
- The most and least reliable flight numbers in the US
- Why the first flight of the morning is statistically safest
A flight number here means United Airlines’s own number as it reports to the DOT. How the figures are computed is on the methodology page.
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.