Flight number record
UA 2233
United Airlines · San Antonio to Newark
- Route
- SAT → EWR
- Departs
- 06:27
- Flights
- 341
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s UA 2233, check with United Airlines.
UA 2233 earns an A+. Nearly every flight arrives inside the 15-minute window the DOT uses to define an on-time arrival, which puts it 17 points better than the national rate of 77.3%. When something does go wrong the average delay runs about an hour. That rests on 341 flights, with a median arrival 12 minutes early.
Set against the rest of the country, UA 2233's record is 17 points better than the US average of 77.3%. That gap is worth roughly 165 fewer late arrivals for every thousand flights.
Key figures
On time
93.8%
Arrivals under 15 minutes late, of 339 completed flights
Avg delay
60 min
Across delayed arrivals only, not all flights
Cancelled
0.59%
National rate is 1.89%
1 hour+ late
1.8%
National rate is 8.3%
These figures cover 341 flights between September 2025 and August 2026. The median arrival is 12 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 2233 flies
UA 2233 flies SAT to EWR without a single fixed slot. Its most common scheduled departure was 06:27, used on 77 of 341 flights, with 07:00 (68 flights) and 06:00 (53 flights) next.
- Departs 06:2777 flights22.6%
- Departs 07:0068 flights19.9%
- Departs 06:0053 flights15.5%
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 06:27 departure sits in the 5am–8am window. Across every US flight scheduled in that window the on-time rate is 89.3%, and UA 2233 runs 5 points better at 93.8%. 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 2233 next to SAT to EWR
Every carrier on SAT to EWR combined arrived on time 85.8% of the time across 596 flights, so UA 2233 is 8 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 2233thin sample | 341 | 93.8% | 60 min | 0.59% | A+ |
| All United Airlines on SAT–EWR | 596 | 85.8% | 78 min | 1.17% | A |
| All carriers on SAT–EWR | 596 | 85.8% | 78 min | 1.17% | A |
| United Airlines, whole network | 830,825 | 78.8% | 73 min | 1.02% | B |
Across the year
UA 2233 quarter by quarter
Quarter by quarter UA 2233 held fairly steady: 89.1% in Oct–Dec 2025, 93.2% in Jan–Mar 2026, 98.9% in Apr–Jun 2026 and 93.5% in Jul–Sep 2026. A spread of 10 points is about what a sample of this size moves on its own, so the annual figure is a fair summary.
- Jul–Sep 20256 flights—
- Oct–Dec 202592 flights89.1%
- Jan–Mar 202690 flights93.2%
- Apr–Jun 202691 flights98.9%
- Jul–Sep 202662 flights93.5%
Scale runs 80% to 100%. Rows with fewer than 30 flights show a dash.
By weekday, UA 2233 ranged from 89.6% on Tuesday to 95.9% on Friday. With about 49 flights behind each day, a spread of 6 points is inside normal variation, so the day you fly is not worth changing for this flight.
Arrival by arrival
How late UA 2233 runs when it is late
UA 2233 often beats the schedule: 153 of 339 completed flights, 45%, arrived 15 minutes or more early. The 21 late arrivals split 9 under half an hour, 6 between 30 and 60 minutes, and 6 an hour or more.
- 15+ min early153 flights45.1%
- Within 15 min165 flights48.7%
- 15–29 min late9 flights2.7%
- 30–59 min late6 flights1.8%
- 1–2 hours late3 flights0.9%
- 2+ hours late3 flights0.9%
Scale runs 0% to 100%.
Share of 339 completed flights by arrival against schedule.
Only 14 of 339 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 2233
The latest arrival of the period was on 17 January 2026, 3 hours 10 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 |
|---|---|---|
| 17 January 2026 | 3 hours 10 minutes | Carrier |
| 8 November 2025 | 3 hours 2 minutes | National Airspace System |
| 1 October 2025 | 2 hours 53 minutes | Carrier |
| 24 February 2026 | 1 hour 57 minutes | Extreme weather |
| 24 December 2025 | 1 hour 40 minutes | Carrier |
Delay causes
Why UA 2233 runs late
Carrier accounts for 47% of the 1,254 delay minutes carriers reported here, and the remaining four split what is left.
- 47%Carrier
- 40%National Airspace System
- 13%Extreme weather
Extreme weather accounts for 13% of delay minutes, well above the single-digit share typical across the system. Weather delays are lumpy: they arrive as whole bad days rather than as a steady drag, so the quarterly figures above are the more useful view of the risk. The national share is 6%, so this operation carries roughly 2.2 times the usual weather exposure. The split is drawn from 1,254 delay minutes reported on UA 2233.
Cancellations are rare at 0.59%, 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
Badly late arrivals are rare here: only 1.8% 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 1,569 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.
The same number turns up on two other city pairs in the data, including EWR to CLT (88) and EWR to SMF (24), but none flew often enough under UA 2233 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to SAT to EWR only.
One caution: this is a thin sample. 341 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 2233
For a booking, UA 2233 has one of the better records a US domestic flight can show: 93.8% on time and 0.59% cancelled. That is a base rate, not a promise about any single day.
Related
Where to go next
- San Antonio International (SAT) delay statistics
- Newark Liberty International (EWR) 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.