Flight number record
UA 1545
United Airlines · Cleveland to Houston
- Route
- CLE → IAH
- Departs
- 15:11
- Flights
- 365
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s UA 1545, check with United Airlines.
UA 1545 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 a little over an hour. That rests on 365 flights, with a median arrival 17 minutes early.
Set against the rest of the country, UA 1545's record is 12 points better than the US average of 77.3%. That gap is worth roughly 120 fewer late arrivals for every thousand flights.
Key figures
On time
89.3%
Arrivals under 15 minutes late, of 363 completed flights
Avg delay
77 min
Across delayed arrivals only, not all flights
Cancelled
0.00%
National rate is 1.89%
1 hour+ late
4.4%
National rate is 8.3%
These figures cover 365 flights between September 2025 and August 2026. The median arrival is 17 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 1545 flies
UA 1545 flies CLE to IAH without a single fixed slot. Its most common scheduled departure was 15:11, used on 82 of 365 flights, with 14:55 (40 flights) next.
- Departs 15:1182 flights22.5%
- Departs 14:5540 flights11.0%
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 15:11 departure sits in the 2pm–5pm window. Across every US flight scheduled in that window the on-time rate is 71.9%, and UA 1545 runs 17 points better at 89.3%. 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 1545 next to CLE to IAH
Every carrier on CLE to IAH combined arrived on time 90.8% of the time across 814 flights, so UA 1545 is 2 points behind it. Across its whole network United Airlines managed 78.8%, which this flight beats by 11 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| UA 1545 | 365 | 89.3% | 77 min | 0.00% | A+ |
| All United Airlines on CLE–IAH | 814 | 90.8% | 63 min | 0.00% | A+ |
| All carriers on CLE–IAH | 814 | 90.8% | 63 min | 0.00% | A+ |
| United Airlines, whole network | 830,825 | 78.8% | 73 min | 1.02% | B |
Across the year
UA 1545 quarter by quarter
Quarter by quarter UA 1545 held fairly steady: 93.3% in Jul–Sep 2025, 87.0% in Oct–Dec 2025, 92.1% in Jan–Mar 2026, 86.8% in Apr–Jun 2026 and 90.2% in Jul–Sep 2026. A spread of 7 points is about what a sample of this size moves on its own, so the annual figure is a fair summary.
- Jul–Sep 202530 flights93.3%
- Oct–Dec 202592 flights87.0%
- Jan–Mar 202690 flights92.1%
- Apr–Jun 202691 flights86.8%
- Jul–Sep 202662 flights90.2%
Scale runs 80% to 100%.
By weekday, UA 1545 ranged from 84.6% on Friday to 96.2% on Wednesday. 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 1545 runs when it is late
UA 1545 often beats the schedule: 203 of 363 completed flights, 56%, arrived 15 minutes or more early. The 39 late arrivals split 11 under half an hour, 12 between 30 and 60 minutes, and 16 an hour or more.
- 15+ min early203 flights55.9%
- Within 15 min121 flights33.3%
- 15–29 min late11 flights3.0%
- 30–59 min late12 flights3.3%
- 1–2 hours late7 flights1.9%
- 2+ hours late9 flights2.5%
Scale runs 0% to 100%.
Share of 363 completed flights by arrival against schedule.
11 of 39 late departures made up the time and arrived on time, 28% of them. 11 flights left on time and still arrived late.
The worst days
Worst days for UA 1545
The latest arrival of the period was on 5 April 2026, 5 hours 5 minutes behind schedule; most of its delay minutes were filed as a late-arriving aircraft. The five worst days are spread across April, June, February and March, with no single month standing out.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 5 April 2026 | 5 hours 5 minutes | Late-arriving aircraft |
| 21 June 2026 | 3 hours 40 minutes | Late-arriving aircraft |
| 5 February 2026 | 3 hours 37 minutes | Carrier |
| 16 March 2026 | 2 hours 57 minutes | National Airspace System |
| 11 March 2026 | 2 hours 54 minutes | National Airspace System |
Delay causes
Why UA 1545 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 3,002 reported delay minutes.
- 42%National Airspace System
- 28%Carrier
- 25%Late-arriving aircraft
- 5%Extreme weather
42% of delay minutes are charged to the National Airspace System: air traffic volume, runway configuration, ground stops. No carrier can price its way out of that, which is why airport choice moves the number here more than carrier choice does. That is 1,253 minutes out of 3,002, against a national NAS share of 21%. The split is drawn from 3,002 delay minutes reported on UA 1545.
Cancellations are rare at 0.00%, below the national 1.89% and low enough to earn the plus on the grade. Almost no flights are 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 4.4% 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 1,091 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 IAH to SNA (73), IAH to MIA (31) and RSW to CLE (19), but none flew often enough under UA 1545 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to CLE to IAH only.
One caution: this is a thin sample. 365 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 1545
For a booking, UA 1545 has one of the better records a US domestic flight can show: 89.3% on time and 0.00% cancelled. That is a base rate, not a promise about any single day.
Related
Where to go next
- CLE to IAH, every carrier and departure
- IAH to CLE, the return direction
- United Airlines 1645 on the same route91.4%
- Cleveland Hopkins International (CLE) 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.