Flight number record
UA 2864
United Airlines · Houston to Charlotte
- Route
- IAH → CLT
- Departs
- 18:05
- Flights
- 336
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s UA 2864, check with United Airlines.
UA 2864 lands a B+, about a point better than the national rate of 77.3%. About one flight in five arrives 15 minutes late or worse, and those flights are late by about an hour on average. That rests on 336 flights, with a median arrival 2 minutes early.
Key figures
On time
78.4%
Arrivals under 15 minutes late, of 333 completed flights
Avg delay
57 min
Across delayed arrivals only, not all flights
Cancelled
0.89%
National rate is 1.89%
1 hour+ late
7.2%
National rate is 8.3%
These figures cover 336 flights between September 2025 and August 2026. The median arrival is 2 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.
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.
Schedule
When UA 2864 flies
UA 2864 flies IAH to CLT without a single fixed slot. Its most common scheduled departure was 18:05, used on 106 of 336 flights, with 18:12 (70 flights) and 18:22 (55 flights) next.
- Departs 18:05106 flights31.5%
- Departs 18:1270 flights20.8%
- Departs 18:2255 flights16.4%
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 18:05 departure sits in the 5pm–8pm window. Across every US flight scheduled in that window the on-time rate is 68.0%, and UA 2864 runs 10 points better at 78.4%. By that time of day most aircraft have flown several legs already, and whatever went wrong earlier is still in the schedule.
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.
Against the route
UA 2864 next to IAH to CLT
Every carrier on IAH to CLT combined arrived on time 81.8% of the time across 2,314 flights, so UA 2864 is 3 points behind it. Across its whole network United Airlines managed 78.8%, close to this flight's figure.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| UA 2864thin sample | 336 | 78.4% | 57 min | 0.89% | B+ |
| All United Airlines on IAH–CLTthin sample | 339 | 78.6% | 57 min | 0.88% | B+ |
| All carriers on IAH–CLT | 2,314 | 81.8% | 108 min | 1.82% | B |
| United Airlines, whole network | 830,825 | 78.8% | 73 min | 1.02% | B |
Across the year
UA 2864 quarter by quarter
UA 2864 did not run the same all year. Its best quarter was Jul–Sep 2025 at 93.3% on time and its weakest Jul–Sep 2026 at 64.7%, a swing of 29 points on roughly 67 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 flights93.3%
- Oct–Dec 202591 flights79.1%
- Jan–Mar 202690 flights83.9%
- Apr–Jun 202691 flights72.5%
- Jul–Sep 202634 flights64.7%
Scale runs 55% to 100%.
By weekday, UA 2864 ranged from 71.4% on Friday to 81.8% on Tuesday. With about 48 flights behind each day, a spread of 10 points is inside normal variation, so the day you fly is not worth changing for this flight.
Arrival by arrival
How late UA 2864 runs when it is late
The 72 late arrivals split 29 under half an hour, 19 between 30 and 60 minutes, and 24 an hour or more.
- 15+ min early81 flights24.3%
- Within 15 min180 flights54.1%
- 15–29 min late29 flights8.7%
- 30–59 min late19 flights5.7%
- 1–2 hours late17 flights5.1%
- 2+ hours late7 flights2.1%
Scale runs 0% to 100%.
Share of 333 completed flights by arrival against schedule.
13 of 67 late departures made up the time and arrived on time, 19% 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 CLT.
The worst days
Worst days for UA 2864
The latest arrival of the period was on 18 June 2026, 3 hours 31 minutes behind schedule; most of its delay minutes were filed as national airspace system delay. The five worst days are spread across June, May, March and October, with no single month standing out.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 18 June 2026 | 3 hours 31 minutes | National Airspace System |
| 1 May 2026 | 3 hours | Late-arriving aircraft |
| 15 March 2026 | 2 hours 48 minutes | National Airspace System |
| 30 October 2025 | 2 hours 42 minutes | Late-arriving aircraft |
| 15 May 2026 | 2 hours 17 minutes | Carrier |
Delay causes
Why UA 2864 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 4,069 reported delay minutes.
- 41%Late-arriving aircraft
- 31%Carrier
- 21%National Airspace System
- 7%Extreme weather
41% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 4,069 reported delay minutes here, that single category outweighs weather by 5 to one. The split is drawn from 4,069 delay minutes reported on UA 2864.
Cancellations are rare at 0.89%, 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
7.2% of arrivals land an hour or more late, close to the national 8.3%, so a 60 to 75 minute layover is reasonable here while anything under 45 minutes is a bet. Most delays on this route last about an hour, which a normal layover absorbs.
The 912 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 three other city pairs in the data, including LAS to IAH (29), GSP to DEN (21) and SFO to RDU (1), but none flew often enough under UA 2864 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to IAH to CLT only.
One caution: this is a thin sample. 336 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 2864
For a booking, read UA 2864 as 78.4% on time with 0.89% cancelled over 336 flights. Those are rates from the past twelve months, not a forecast for any particular day.
Related
Where to go next
- IAH to CLT, every carrier and departure
- CLT to IAH, the return direction
- American Airlines 2011 on the same route92.4%
- George Bush Intercontinental (IAH) 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.