Flight number record
UA 616
United Airlines · Denver to Charlotte
- Route
- DEN → CLT
- Departs
- 17:45
- Flights
- 289
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s UA 616, check with United Airlines.
UA 616 sits in the middle of the pack with a C. About seven flights in ten arrive on time by the DOT's definition, 7 points worse than the national rate of 77.3%. The late ones land a little over an hour behind schedule. That rests on 289 flights, with a median arrival 2 minutes early.
The national on-time rate over the same period is 77.3%, so UA 616 runs 7 points behind the country as a whole. Across a thousand flights that is about 71 extra late arrivals.
Key figures
On time
70.2%
Arrivals under 15 minutes late, of 285 completed flights
Avg delay
70 min
Across delayed arrivals only, not all flights
Cancelled
1.38%
National rate is 1.89%
1 hour+ late
12.6%
National rate is 8.3%
These figures cover 289 flights between September 2025 and August 2026. Beyond the headline rate, 12.6% of arrivals land a full hour or more behind schedule, against 8.3% nationally.
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Schedule
When UA 616 flies
UA 616 flies DEN to CLT without a single fixed slot. Its most common scheduled departure was 17:45, used on 76 of 289 flights, with 17:35 (45 flights) and 17:40 (41 flights) next.
- Departs 17:4576 flights26.3%
- Departs 17:3545 flights15.6%
- Departs 17:4041 flights14.2%
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 17:45 departure sits in the 5pm–8pm window. Across every US flight scheduled in that window the on-time rate is 68.0%, and UA 616 runs 2 points better at 70.2%. By that time of day most aircraft have flown several legs already, and whatever went wrong earlier is still in the schedule.
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Against the route
UA 616 next to DEN to CLT
Every carrier on DEN to CLT combined arrived on time 82.5% of the time across 2,781 flights, so UA 616 is 12 points behind it. United flew 674 flights on the same city pair under all its flight numbers, including this one, and those ran 78.7% on time. Across its whole network United Airlines managed 78.8%, which this flight trails by 9 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| UA 616thin sample | 289 | 70.2% | 70 min | 1.38% | C |
| All United Airlines on DEN–CLT | 674 | 78.7% | 61 min | 0.74% | B+ |
| All carriers on DEN–CLT | 2,781 | 82.5% | 71 min | 1.26% | B |
| United Airlines, whole network | 830,825 | 78.8% | 73 min | 1.02% | B |
Across the year
UA 616 quarter by quarter
UA 616 did not run the same all year. Its best quarter was Jan–Mar 2026 at 81.7% on time and its weakest Jul–Sep 2026 at 47.6%, a swing of 34 points on roughly 58 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 flights79.1%
- Jan–Mar 202663 flights81.7%
- Apr–Jun 202662 flights59.7%
- Jul–Sep 202643 flights47.6%
Scale runs 40% to 85%.
By weekday, UA 616 did best on Friday at 82.9% on time and worst on Monday at 56.1%. Each day rests on about 41 flights, so a gap of 27 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late UA 616 runs when it is late
The 85 late arrivals split 30 under half an hour, 19 between 30 and 60 minutes, and 36 an hour or more.
- 15+ min early62 flights21.8%
- Within 15 min138 flights48.4%
- 15–29 min late30 flights10.5%
- 30–59 min late19 flights6.7%
- 1–2 hours late20 flights7.0%
- 2+ hours late16 flights5.6%
Scale runs 0% to 100%.
Share of 285 completed flights by arrival against schedule.
9 of 69 late departures made up the time and arrived on time, 13% of them. In the other direction, 25 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 CLT.
The worst days
Worst days for UA 616
The latest arrival of the period was on 20 June 2026, 4 hours 19 minutes behind schedule; most of its delay minutes were filed as a late-arriving aircraft. The same cause led on five of the five worst days.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 20 June 2026 | 4 hours 19 minutes | Late-arriving aircraft |
| 9 September 2025 | 3 hours 58 minutes | Late-arriving aircraft |
| 13 July 2026 | 3 hours 21 minutes | Late-arriving aircraft |
| 17 February 2026 | 3 hours 20 minutes | Late-arriving aircraft |
| 25 May 2026 | 3 hours 10 minutes | Late-arriving aircraft |
Delay causes
Why UA 616 runs late
Late-arriving aircraft accounts for 59% of the 5,905 delay minutes carriers reported here, and the remaining four split what is left.
- 59%Late-arriving aircraft
- 25%Carrier
- 15%National Airspace System
- 0%Extreme weather
59% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 5,905 reported delay minutes here, that single category outweighs weather by 59 to one. The split is drawn from 5,905 delay minutes reported on UA 616.
Cancellations sit at 1.38% against a national 1.89%, which is ordinary. Diversions add another 0.00%.
Connections and routes
What a delay on this flight costs
12.6% 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 1,337 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 six other city pairs in the data, including SBA to DEN (83), DEN to PBI (32) and PSP to DEN (24), but none flew often enough under UA 616 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to DEN to CLT only.
One caution: this is a thin sample. 289 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 616
For a booking, UA 616 is a flight to put a long connection behind. 12.6% of its completed flights arrived an hour or more late, which a short layover will not absorb. If the onward flight is on a separate ticket, the risk sits with you.
Related
Where to go next
- DEN to CLT, every carrier and departure
- CLT to DEN, the return direction
- Denver International (DEN) delay statistics
- Charlotte Douglas International (CLT) 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.