Flight number record
UA 2625
United Airlines · Denver to San Antonio
- Route
- DEN → SAT
- Departs
- 09:35
- Flights
- 256
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s UA 2625, check with United Airlines.
UA 2625 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 16 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 256 flights, with a median arrival 9 minutes early.
Set against the rest of the country, UA 2625's record is 16 points better than the US average of 77.3%. That gap is worth roughly 156 fewer late arrivals for every thousand flights.
Key figures
On time
92.9%
Arrivals under 15 minutes late, of 255 completed flights
Avg delay
79 min
Across delayed arrivals only, not all flights
Cancelled
0.00%
National rate is 1.89%
1 hour+ late
3.1%
National rate is 8.3%
These figures cover 256 flights between September 2025 and August 2026. The median arrival is 9 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 2625 flies
UA 2625 flies DEN to SAT without a single fixed slot. Its most common scheduled departure was 09:35, used on 102 of 256 flights, with 09:55 (40 flights) and 09:53 (36 flights) next.
- Departs 09:35102 flights39.8%
- Departs 09:5540 flights15.6%
- Departs 09:5336 flights14.1%
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 09:35 departure sits in the 8am–11am window. Across every US flight scheduled in that window the on-time rate is 83.9%, and UA 2625 runs 9 points better at 92.9%. 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 2625 next to DEN to SAT
Every carrier on DEN to SAT combined arrived on time 76.8% of the time across 3,067 flights, so UA 2625 is 16 points ahead of it. United flew 1,196 flights on the same city pair under all its flight numbers, including this one, and those ran 83.6% on time. Across its whole network United Airlines managed 78.8%, which this flight beats by 14 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| UA 2625thin sample | 256 | 92.9% | 79 min | 0.00% | A+ |
| All United Airlines on DEN–SAT | 1,196 | 83.6% | 72 min | 0.17% | B+ |
| All carriers on DEN–SAT | 3,067 | 76.8% | 61 min | 0.26% | B+ |
| United Airlines, whole network | 830,825 | 78.8% | 73 min | 1.02% | B |
Across the year
UA 2625 quarter by quarter
Quarter by quarter UA 2625 held fairly steady: 90.0% in Jan–Mar 2026, 94.4% in Apr–Jun 2026 and 96.8% 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.
- Oct–Dec 202514 flights—
- Jan–Mar 202690 flights90.0%
- Apr–Jun 202690 flights94.4%
- Jul–Sep 202662 flights96.8%
Scale runs 80% to 100%. Rows with fewer than 30 flights show a dash.
By weekday, UA 2625 ranged from 86.5% on Sunday to 97.3% on Monday. With about 37 flights behind each day, a spread of 11 points is inside normal variation, so the day you fly is not worth changing for this flight.
Arrival by arrival
How late UA 2625 runs when it is late
UA 2625 often beats the schedule: 67 of 255 completed flights, 26%, arrived 15 minutes or more early. The 18 late arrivals split 5 under half an hour, 5 between 30 and 60 minutes, and 8 an hour or more.
- 15+ min early67 flights26.3%
- Within 15 min170 flights66.7%
- 15–29 min late5 flights2.0%
- 30–59 min late5 flights2.0%
- 1–2 hours late5 flights2.0%
- 2+ hours late3 flights1.2%
Scale runs 0% to 100%.
Share of 255 completed flights by arrival against schedule.
Only 19 of 255 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 2625
The latest arrival of the period was on 19 December 2025, 5 hours 19 minutes behind schedule; most of its delay minutes were filed as carrier-caused (crew, maintenance, fuelling, baggage). The five worst days are spread across December, June, March and April, with no single month standing out.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 19 December 2025 | 5 hours 19 minutes | Carrier |
| 19 June 2026 | 3 hours 39 minutes | Late-arriving aircraft |
| 6 March 2026 | 2 hours 10 minutes | National Airspace System |
| 21 June 2026 | 1 hour 57 minutes | Late-arriving aircraft |
| 28 April 2026 | 1 hour 36 minutes | Carrier |
Delay causes
Why UA 2625 runs late
Late-arriving aircraft accounts for 46% of the 1,418 delay minutes carriers reported here, and the remaining four split what is left.
- 46%Late-arriving aircraft
- 30%Carrier
- 24%National Airspace System
46% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 1,418 reported delay minutes here, that single category outweighs weather by 46 to one. The split is drawn from 1,418 delay minutes reported on UA 2625.
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 3.1% 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.
The 794 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 STL to DEN (107), SAT to IAH (37) and IAH to DFW (36), but none flew often enough under UA 2625 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to DEN to SAT only.
One caution: this is a thin sample. 256 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 2625
For a booking, UA 2625 has one of the better records a US domestic flight can show: 92.9% on time and 0.00% cancelled. That is a base rate, not a promise about any single day.
Related
Where to go next
- DEN to SAT, every carrier and departure
- SAT to DEN, the return direction
- United Airlines 1022 on the same route89.0%
- Denver International (DEN) delay statistics
- San Antonio International (SAT) 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
- Why the first flight of the morning is statistically safest
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.