Flight number record
UA 575
United Airlines · Charlotte to Houston
- Route
- CLT → IAH
- Departs
- 06:45
- Flights
- 337
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s UA 575, check with United Airlines.
UA 575 earns an A. Close to nine flights in ten arrive inside the 15-minute window the DOT uses to define an on-time arrival, which puts it 12 points better than the national rate of 77.3%. When something does go wrong the average delay runs close to two hours. That rests on 337 flights, with a median arrival 13 minutes early.
Set against the rest of the country, UA 575's record is 12 points better than the US average of 77.3%. That gap is worth roughly 116 fewer late arrivals for every thousand flights.
Key figures
On time
88.9%
Arrivals under 15 minutes late, of 333 completed flights
Avg delay
102 min
Across delayed arrivals only, not all flights
Cancelled
1.19%
National rate is 1.89%
1 hour+ late
3.6%
National rate is 8.3%
These figures cover 337 flights between September 2025 and August 2026. The median arrival is 13 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 575 flies
UA 575 flies CLT to IAH without a single fixed slot. Its most common scheduled departure was 06:45, used on 110 of 337 flights, with 07:00 (90 flights) and 07:09 (40 flights) next.
- Departs 06:45110 flights32.6%
- Departs 07:0090 flights26.7%
- Departs 07:0940 flights11.9%
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 06:45 departure sits in the 5am–8am window. Across every US flight scheduled in that window the on-time rate is 89.3%, and UA 575 runs level with that at 88.9%. Early departures usually start with an aircraft that has not flown yet that day, which is most of why the window does well.
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Against the route
UA 575 next to CLT to IAH
Every carrier on CLT to IAH combined arrived on time 79.2% of the time across 2,315 flights, so UA 575 is 10 points ahead of it. Across its whole network United Airlines managed 78.8%, which this flight beats by 10 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| UA 575thin sample | 337 | 88.9% | 102 min | 1.19% | A |
| All United Airlines on CLT–IAHthin sample | 340 | 89.0% | 102 min | 1.18% | A |
| All carriers on CLT–IAH | 2,315 | 79.2% | 79 min | 1.94% | B |
| United Airlines, whole network | 830,825 | 78.8% | 73 min | 1.02% | B |
Across the year
UA 575 quarter by quarter
UA 575 did not run the same all year. Its best quarter was Jul–Sep 2025 at 96.7% on time and its weakest Apr–Jun 2026 at 79.1%, a swing of 18 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 flights96.7%
- Oct–Dec 202592 flights92.4%
- Jan–Mar 202689 flights93.0%
- Apr–Jun 202691 flights79.1%
- Jul–Sep 202635 flights88.2%
Scale runs 70% to 100%.
By weekday, UA 575 did best on Thursday at 97.9% on time and worst on Saturday at 81.6%. Each day rests on about 48 flights, so a gap of 16 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late UA 575 runs when it is late
UA 575 often beats the schedule: 146 of 333 completed flights, 44%, arrived 15 minutes or more early. The 37 late arrivals split 15 under half an hour, 10 between 30 and 60 minutes, and 12 an hour or more.
- 15+ min early146 flights43.8%
- Within 15 min150 flights45.0%
- 15–29 min late15 flights4.5%
- 30–59 min late10 flights3.0%
- 1–2 hours late3 flights0.9%
- 2+ hours late9 flights2.7%
Scale runs 0% to 100%.
Share of 333 completed flights by arrival against schedule.
6 of 26 late departures made up the time and arrived on time, 23% of them. In the other direction, 17 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 IAH.
The worst days
Worst days for UA 575
The latest arrival of the period was on 23 May 2026, 12 hours 29 minutes behind schedule; most of its delay minutes were filed as carrier-caused (crew, maintenance, fuelling, baggage). The same cause led on five of the five worst days.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 23 May 2026 | 12 hours 29 minutes | Carrier |
| 31 January 2026 | 7 hours 48 minutes | Carrier |
| 22 February 2026 | 6 hours 54 minutes | Carrier |
| 30 November 2025 | 3 hours 34 minutes | Carrier |
| 20 June 2026 | 3 hours 29 minutes | Carrier |
Delay causes
Why UA 575 runs late
Carrier accounts for 77% of the 3,783 delay minutes carriers reported here, and the remaining four split what is left.
- 77%Carrier
- 23%National Airspace System
The largest share of delay minutes, 77%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 2,925 of the 3,783 delay minutes reported here. The split is drawn from 3,783 delay minutes reported on UA 575.
Cancellations sit at 1.19% against a national 1.89%, which is ordinary. Diversions add another 0.00%.
Connections and routes
What a delay on this flight costs
Badly late arrivals are rare here: only 3.6% 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 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 four other city pairs in the data, including IAH to MSY (229), IAH to PHX (19) and ORF to EWR (1), but none flew often enough under UA 575 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to CLT to IAH only.
One caution: this is a thin sample. 337 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 575
For a booking, UA 575 has one of the better records a US domestic flight can show: 88.9% on time and 1.19% cancelled. That is a base rate, not a promise about any single day.
Related
Where to go next
- CLT to IAH, every carrier and departure
- IAH to CLT, the return direction
- American Airlines 1840 on the same route73.6%
- Charlotte Douglas International (CLT) delay statistics
- George Bush Intercontinental (IAH) 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
- Worst months to fly in the US, ranked by the data
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.