Flight number record
UA 479
United Airlines · Cincinnati to Denver
- Route
- CVG → DEN
- Departs
- 15:29
- Flights
- 363
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s UA 479, check with United Airlines.
UA 479 earns an A+. More than four flights in five arrive inside the 15-minute window the DOT uses to define an on-time arrival, which puts it 9 points better than the national rate of 77.3%. When something does go wrong the average delay runs a little over an hour. That rests on 363 flights, with a median arrival 9 minutes early.
Set against the rest of the country, UA 479's record is 9 points better than the US average of 77.3%. That gap is worth roughly 93 fewer late arrivals for every thousand flights.
Key figures
On time
86.6%
Arrivals under 15 minutes late, of 359 completed flights
Avg delay
68 min
Across delayed arrivals only, not all flights
Cancelled
0.28%
National rate is 1.89%
1 hour+ late
4.7%
National rate is 8.3%
These figures cover 363 flights between September 2025 and August 2026. The median arrival is 9 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.
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Schedule
When UA 479 flies
UA 479 flies CVG to DEN without a single fixed slot. Its most common scheduled departure was 15:29, used on 118 of 363 flights, with 15:25 (64 flights) and 15:26 (63 flights) next.
- Departs 15:29118 flights32.5%
- Departs 15:2564 flights17.6%
- Departs 15:2663 flights17.4%
Scale runs 0% to 100%.
Share of scheduled departures at each local time. Times used on fewer than one flight in ten are not listed.
A 15:29 departure sits in the 2pm–5pm window. Across every US flight scheduled in that window the on-time rate is 71.9%, and UA 479 runs 15 points better at 86.6%. Midday slots inherit some of the morning's delays without yet carrying the full weight of the evening's.
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Against the route
UA 479 next to CVG to DEN
Every carrier on CVG to DEN combined arrived on time 82.7% of the time across 1,498 flights, so UA 479 is 4 points ahead of it. United flew 727 flights on the same city pair under all its flight numbers, including this one, and those ran 87.2% on time. Across its whole network United Airlines managed 78.8%, which this flight beats by 8 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| UA 479thin sample | 363 | 86.6% | 68 min | 0.28% | A+ |
| All United Airlines on CVG–DEN | 727 | 87.2% | 78 min | 0.55% | A+ |
| All carriers on CVG–DEN | 1,498 | 82.7% | 70 min | 0.80% | B+ |
| United Airlines, whole network | 830,825 | 78.8% | 73 min | 1.02% | B |
Across the year
UA 479 quarter by quarter
UA 479 did not run the same all year. Its best quarter was Jan–Mar 2026 at 91.0% on time and its weakest Jul–Sep 2025 at 73.3%, a swing of 18 points on roughly 73 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 202530 flights73.3%
- Oct–Dec 202591 flights86.8%
- Jan–Mar 202690 flights91.0%
- Apr–Jun 202691 flights87.8%
- Jul–Sep 202661 flights84.7%
Scale runs 65% to 95%.
By weekday, UA 479 ranged from 82.4% on Friday to 94.1% on Sunday. With about 52 flights behind each day, a spread of 12 points is inside normal variation, so the day you fly is not worth changing for this flight.
Arrival by arrival
How late UA 479 runs when it is late
UA 479 often beats the schedule: 114 of 359 completed flights, 32%, arrived 15 minutes or more early. The 48 late arrivals split 21 under half an hour, 10 between 30 and 60 minutes, and 17 an hour or more.
- 15+ min early114 flights31.8%
- Within 15 min197 flights54.9%
- 15–29 min late21 flights5.8%
- 30–59 min late10 flights2.8%
- 1–2 hours late9 flights2.5%
- 2+ hours late8 flights2.2%
Scale runs 0% to 100%.
Share of 359 completed flights by arrival against schedule.
14 of 47 late departures made up the time and arrived on time, 30% of them. 15 flights left on time and still arrived late.
The worst days
Worst days for UA 479
The latest arrival of the period was on 19 December 2025, 6 hours 2 minutes behind schedule; most of its delay minutes were filed as a late-arriving aircraft. The same cause led on three of the five worst days.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 19 December 2025 | 6 hours 2 minutes | Late-arriving aircraft |
| 23 September 2025 | 4 hours 5 minutes | Late-arriving aircraft |
| 21 July 2026 | 3 hours 24 minutes | Late-arriving aircraft |
| 11 December 2025 | 3 hours 21 minutes | National Airspace System |
| 12 March 2026 | 3 hours 17 minutes | National Airspace System |
Delay causes
Why UA 479 runs late
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 3,263 reported delay minutes.
- 38%National Airspace System
- 34%Late-arriving aircraft
- 24%Carrier
- 4%Extreme weather
34% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 3,263 reported delay minutes here, that single category outweighs weather by 9 to one. The split is drawn from 3,263 delay minutes reported on UA 479.
Cancellations are rare at 0.28%, below the national 1.89% 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 routes
What a delay on this flight costs
Badly late arrivals are rare here: only 4.7% land an hour or more behind schedule, against 8.3% 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.
The 1,069 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 same number turns up on two other city pairs in the data, including ORD to ONT (1) and SFO to MFR (1), but none flew often enough under UA 479 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to CVG to DEN only.
One caution: this is a thin sample. 363 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 479
For a booking, UA 479 has one of the better records a US domestic flight can show: 86.6% on time and 0.28% cancelled. That is a base rate, not a promise about any single day.
Related
Where to go next
- CVG to DEN, every carrier and departure
- DEN to CVG, the return direction
- United Airlines 1666 on the same route87.8%
- Frontier Airlines 3725 on the same route81.8%
- Cincinnati/Northern Kentucky International (CVG) delay statistics
- Denver International (DEN) 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, September 2025 to August 2026. Last updated ; recomputed monthly. How this data is collected.