Flight number record
UA 2233
United Airlines · San Antonio to Newark
- Route
- SAT → EWR
- Departs
- 07:00
- Flights
- 328
- Period
- July 2025 to June 2026
Historical statistics for July 2025 to June 2026, not live status. For today’s UA 2233, check with United Airlines.
UA 2233 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 14 points better than the national rate of 77.6%. When something does go wrong the average delay runs a little over an hour. That rests on 328 flights, with a median arrival 13 minutes early.
Set against the rest of the country, UA 2233's record is 14 points better than the US average of 77.6%. That gap is worth roughly 144 fewer late arrivals for every thousand flights.
Key figures
On time
92.0%
Arrivals under 15 minutes late, of 326 completed flights
Avg delay
74 min
Across delayed arrivals only, not all flights
Cancelled
0.61%
National rate is 1.81%
1 hour+ late
3.4%
National rate is 8.1%
These figures cover 328 flights between July 2025 and June 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.
Schedule
When UA 2233 flies
UA 2233 flies SAT to EWR without a single fixed slot. Its most common scheduled departure was 07:00, used on 68 of 328 flights, with 06:27 (37 flights) and 07:06 (36 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.
- Departs 07:0068 flights20.7%
- Departs 06:2737 flights11.3%
- Departs 07:0636 flights11.0%
Scale runs 0% to 100%. Rows with fewer than 30 flights show a dash.
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 2233 runs 3 points better at 92.0%. Early departures usually start with an aircraft that has not flown yet that day, which is most of why the window does well.
Against the route
UA 2233 next to SAT to EWR
Every carrier on SAT to EWR combined arrived on time 86.7% of the time across 554 flights, so UA 2233 is 5 points ahead of it. United flew 552 flights on the same city pair under all its flight numbers, including this one, and those ran 86.8% on time. Across its whole network United Airlines managed 79.0%, which this flight beats by 13 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| UA 2233thin sample | 328 | 92.0% | 74 min | 0.61% | A+ |
| All United Airlines on SAT–EWR | 552 | 86.8% | 79 min | 0.72% | A+ |
| All carriers on SAT–EWR | 554 | 86.7% | 78 min | 0.72% | A+ |
| United Airlines, whole network | 821,041 | 79.0% | 72 min | 1.01% | B |
Across the year
UA 2233 quarter by quarter
UA 2233 did not run the same all year. Its best quarter was Apr–Jun 2026 at 98.9% on time and its weakest Jul–Sep 2025 at 83.6%, a swing of 15 points on roughly 82 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 202555 flights83.6%
- Oct–Dec 202592 flights89.1%
- Jan–Mar 202690 flights93.2%
- Apr–Jun 202691 flights98.9%
Scale runs 75% to 100%. Rows with fewer than 30 flights show a dash.
By weekday, UA 2233 ranged from 87.2% on Thursday to 95.7% on Wednesday. With about 47 flights behind each day, a spread of 9 points is inside normal variation, so the day you fly is not worth changing for this flight.
Delay causes
Why UA 2233 runs late
One category carries most of the weight here. Carrier accounts for 52% of the 1,918 delay minutes carriers reported, and the remaining four split what is left. The split is by minutes rather than by flights, so a few very long delays count for as much as many short ones.
- 52%Carrier
- 39%National Airspace System
- 9%Extreme weather
39% 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 751 minutes out of 1,918, against a national NAS share of 21%. The split is drawn from 1,918 delay minutes reported on UA 2233.
Cancellations are rare at 0.61%, below the national 1.81% 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 3.4% land an hour or more behind schedule, against 8.1% 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 (37), 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. 328 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: 92.0% on time and 0.61% 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, July 2025 to June 2026. Last updated 15 September 2026; recomputed monthly. How this data is collected.