Flight number record
UA 2671
United Airlines · Denver to Raleigh
- Route
- DEN → RDU
- Departs
- 17:45
- Flights
- 287
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s UA 2671, check with United Airlines.
UA 2671 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 a little over an hour on average. That rests on 287 flights, with a median arrival 6 minutes early.
Key figures
On time
76.8%
Arrivals under 15 minutes late, of 285 completed flights
Avg delay
73 min
Across delayed arrivals only, not all flights
Cancelled
0.70%
National rate is 1.89%
1 hour+ late
9.5%
National rate is 8.3%
These figures cover 287 flights between September 2025 and August 2026. Beyond the headline rate, 9.5% of arrivals land a full hour or more behind schedule, against 8.3% nationally.
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Schedule
When UA 2671 flies
UA 2671 flies DEN to RDU without a single fixed slot. Its most common scheduled departure was 17:45, used on 96 of 287 flights, with 17:25 (37 flights) and 17:51 (37 flights) next.
- Departs 17:4596 flights33.4%
- Departs 17:2537 flights12.9%
- Departs 17:5137 flights12.9%
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 2671 runs 9 points better at 76.8%. 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 2671 next to DEN to RDU
Every carrier on DEN to RDU combined arrived on time 76.0% of the time across 1,732 flights, so UA 2671 is about level with it. United flew 727 flights on the same city pair under all its flight numbers, including this one, and those ran 82.3% on time. Across its whole network United Airlines managed 78.8%, which this flight trails by 2 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| UA 2671thin sample | 287 | 76.8% | 73 min | 0.70% | B+ |
| All United Airlines on DEN–RDU | 727 | 82.3% | 66 min | 0.41% | B+ |
| All carriers on DEN–RDU | 1,732 | 76.0% | 57 min | 0.69% | B+ |
| United Airlines, whole network | 830,825 | 78.8% | 73 min | 1.02% | B |
Across the year
UA 2671 quarter by quarter
UA 2671 did not run the same all year. Its best quarter was Jan–Mar 2026 at 84.1% on time and its weakest Jul–Sep 2026 at 60.0%, a swing of 24 points on roughly 72 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.
- Oct–Dec 202566 flights77.3%
- Jan–Mar 202690 flights84.1%
- Apr–Jun 202691 flights76.9%
- Jul–Sep 202640 flights60.0%
Scale runs 50% to 90%.
By weekday, UA 2671 did best on Tuesday at 87.8% on time and worst on Monday at 61.9%. Each day rests on about 41 flights, so a gap of 26 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late UA 2671 runs when it is late
UA 2671 often beats the schedule: 77 of 285 completed flights, 27%, arrived 15 minutes or more early. The 66 late arrivals split 18 under half an hour, 21 between 30 and 60 minutes, and 27 an hour or more.
- 15+ min early77 flights27.0%
- Within 15 min142 flights49.8%
- 15–29 min late18 flights6.3%
- 30–59 min late21 flights7.4%
- 1–2 hours late12 flights4.2%
- 2+ hours late15 flights5.3%
Scale runs 0% to 100%.
Share of 285 completed flights by arrival against schedule.
15 of 63 late departures made up the time and arrived on time, 24% of them. In the other direction, 18 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 RDU.
The worst days
Worst days for UA 2671
The latest arrival of the period was on 8 July 2026, 5 hours 2 minutes behind schedule; most of its delay minutes were filed as a late-arriving aircraft. Three of the five worst days fell in July 2026.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 8 July 2026 | 5 hours 2 minutes | Late-arriving aircraft |
| 17 February 2026 | 4 hours 51 minutes | Late-arriving aircraft |
| 14 June 2026 | 3 hours 13 minutes | Carrier |
| 29 July 2026 | 3 hours 10 minutes | Late-arriving aircraft |
| 28 July 2026 | 2 hours 56 minutes | Late-arriving aircraft |
Delay causes
Why UA 2671 runs late
Late-arriving aircraft accounts for 52% of the 4,840 delay minutes carriers reported here, and the remaining four split what is left.
- 52%Late-arriving aircraft
- 24%Carrier
- 24%National Airspace System
- 0%Extreme weather
52% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 4,840 reported delay minutes here, that single category outweighs weather by 52 to one. The split is drawn from 4,840 delay minutes reported on UA 2671.
Cancellations are rare at 0.70%, 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
9.5% 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 1,436 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 seven other city pairs in the data, including TUS to DEN (165), JAC to DEN (59) and PDX to SFO (37), but none flew often enough under UA 2671 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to DEN to RDU only.
One caution: this is a thin sample. 287 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 2671
For a booking, read UA 2671 as 76.8% on time with 0.70% cancelled over 287 flights. Those are rates from the past twelve months, not a forecast for any particular day.
Related
Where to go next
- DEN to RDU, every carrier and departure
- RDU to DEN, the return direction
- United Airlines 2269 on the same route88.1%
- Frontier Airlines 2440 on the same route87.4%
- Denver International (DEN) delay statistics
- Raleigh-Durham International (RDU) 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.