Flight number record
UA 2153
United Airlines · Cleveland to San Francisco
- Route
- CLE → SFO
- Departs
- 07:00
- Flights
- 348
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s UA 2153, check with United Airlines.
UA 2153 earns an A+. Nearly every flight arrives inside the 15-minute window the DOT uses to define an on-time arrival, which puts it 16 points better than the national rate of 77.3%. When something does go wrong the average delay runs roughly 45 minutes. That rests on 348 flights, with a median arrival 10 minutes early.
Set against the rest of the country, UA 2153's record is 16 points better than the US average of 77.3%. That gap is worth roughly 164 fewer late arrivals for every thousand flights.
Key figures
On time
93.7%
Arrivals under 15 minutes late, of 348 completed flights
Avg delay
44 min
Across delayed arrivals only, not all flights
Cancelled
0.00%
National rate is 1.89%
1 hour+ late
1.1%
National rate is 8.3%
These figures cover 348 flights between September 2025 and August 2026. The median arrival is 10 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 2153 flies
UA 2153 flies CLE to SFO without a single fixed slot. Its most common scheduled departure was 07:00, used on 159 of 348 flights, with 06:09 (37 flights) and 07:02 (35 flights) next.
- Departs 07:00159 flights45.7%
- Departs 06:0937 flights10.6%
- Departs 07:0235 flights10.1%
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 07:00 departure sits in the 5am–8am window. Across every US flight scheduled in that window the on-time rate is 89.3%, and UA 2153 runs 4 points better at 93.7%. 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 2153 next to CLE to SFO
Every carrier on CLE to SFO combined arrived on time 87.1% of the time across 573 flights, so UA 2153 is 7 points ahead of it. Across its whole network United Airlines managed 78.8%, which this flight beats by 15 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| UA 2153thin sample | 348 | 93.7% | 44 min | 0.00% | A+ |
| All United Airlines on CLE–SFO | 573 | 87.1% | 68 min | 0.00% | A+ |
| All carriers on CLE–SFO | 573 | 87.1% | 68 min | 0.00% | A+ |
| United Airlines, whole network | 830,825 | 78.8% | 73 min | 1.02% | B |
Across the year
UA 2153 quarter by quarter
UA 2153 did not run the same all year. Its best quarter was Jul–Sep 2025 at 100.0% on time and its weakest Jan–Mar 2026 at 88.8%, a swing of 11 points on roughly 70 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 flights100.0%
- Oct–Dec 202576 flights96.1%
- Jan–Mar 202689 flights88.8%
- Apr–Jun 202691 flights94.5%
- Jul–Sep 202662 flights93.5%
Scale runs 80% to 100%.
By weekday, UA 2153 ranged from 91.8% on Tuesday to 96.0% on Saturday. With about 50 flights behind each day, a spread of 4 points is inside normal variation, so the day you fly is not worth changing for this flight.
Arrival by arrival
How late UA 2153 runs when it is late
UA 2153 often beats the schedule: 122 of 348 completed flights, 35%, arrived 15 minutes or more early. The 22 late arrivals split 10 under half an hour, 8 between 30 and 60 minutes, and 4 an hour or more.
- 15+ min early122 flights35.1%
- Within 15 min204 flights58.6%
- 15–29 min late10 flights2.9%
- 30–59 min late8 flights2.3%
- 1–2 hours late3 flights0.9%
- 2+ hours late1 flights0.3%
Scale runs 0% to 100%.
Share of 348 completed flights by arrival against schedule.
Only 12 of 348 completed flights left 15 minutes late or more, too few to say how often the time is made up.
The worst days
Worst days for UA 2153
The latest arrival of the period was on 2 July 2026, 3 hours 15 minutes behind schedule; most of its delay minutes were filed as carrier-caused (crew, maintenance, fuelling, baggage). The same cause led on three of the five worst days.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 2 July 2026 | 3 hours 15 minutes | Carrier |
| 14 February 2026 | 1 hour 29 minutes | National Airspace System |
| 29 April 2026 | 1 hour 12 minutes | Carrier |
| 16 November 2025 | 1 hour 4 minutes | Carrier |
| 11 February 2026 | 58 minutes | National Airspace System |
Delay causes
Why UA 2153 runs late
Carrier accounts for 53% of the 959 delay minutes carriers reported here, and the remaining four split what is left.
- 53%Carrier
- 43%National Airspace System
- 5%Extreme weather
43% 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 408 minutes out of 959, against a national NAS share of 21%. The split is drawn from 959 delay minutes reported on UA 2153.
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 1.1% 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.
At 2,161 miles this is transcontinental flying, and long routes get a quiet structural advantage. Scheduled block time on a flight this length carries more padding in absolute minutes, so a twenty-minute late departure often still becomes an on-time arrival. Read the on-time rate here as slightly flattering next to a short-haul route with the same operational quality.
UA 2153 is not only a CLE to SFO flight. It also flew SFO to RDM (340 flights, 90.3% on time) often enough to be scored on its own. Airlines attach one number to several legs of an aircraft's day, and each leg keeps its own record here, so check which city pair is on your booking before reading a rate.
One caution: this is a thin sample. 348 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.
| Also flown as | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| SFO to RDMthin sample | 340 | 90.3% | 45 min | 0.29% | A+ |
What to do with this
Booking UA 2153
For a booking, UA 2153 has one of the better records a US domestic flight can show: 93.7% on time and 0.00% cancelled. That is a base rate, not a promise about any single day.
Related
Where to go next
- Cleveland Hopkins International (CLE) delay statistics
- San Francisco International (SFO) 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.