Flight number record
UA 2453
United Airlines · Jacksonville to Houston
- Route
- JAX → IAH
- Departs
- 07:00
- Flights
- 322
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s UA 2453, check with United Airlines.
UA 2453 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 close to two hours. That rests on 322 flights, with a median arrival 19 minutes early.
Set against the rest of the country, UA 2453's record is 17 points better than the US average of 77.3%. That gap is worth roughly 168 fewer late arrivals for every thousand flights.
Key figures
On time
94.1%
Arrivals under 15 minutes late, of 321 completed flights
Avg delay
102 min
Across delayed arrivals only, not all flights
Cancelled
0.31%
National rate is 1.89%
1 hour+ late
2.8%
National rate is 8.3%
These figures cover 322 flights between September 2025 and August 2026. The median arrival is 19 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 2453 flies
UA 2453 flies JAX to IAH without a single fixed slot. Its most common scheduled departure was 07:00, used on 129 of 322 flights, with 07:05 (100 flights) and 06:35 (53 flights) next.
- Departs 07:00129 flights40.1%
- Departs 07:05100 flights31.1%
- Departs 06:3553 flights16.5%
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 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 2453 runs 5 points better at 94.1%. 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 2453 next to JAX to IAH
Every carrier on JAX to IAH combined arrived on time 87.4% of the time across 686 flights, so UA 2453 is 7 points ahead of it. United flew 661 flights on the same city pair under all its flight numbers, including this one, and those ran 88.1% on time. 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 2453thin sample | 322 | 94.1% | 102 min | 0.31% | A+ |
| All United Airlines on JAX–IAH | 661 | 88.1% | 75 min | 0.30% | A+ |
| All carriers on JAX–IAH | 686 | 87.4% | 89 min | 0.29% | A+ |
| United Airlines, whole network | 830,825 | 78.8% | 73 min | 1.02% | B |
Across the year
UA 2453 quarter by quarter
Quarter by quarter UA 2453 held fairly steady: 96.7% in Jul–Sep 2025, 96.1% in Oct–Dec 2025, 96.9% in Jan–Mar 2026, 91.2% in Apr–Jun 2026 and 91.7% in Jul–Sep 2026. A spread of 6 points is about what a sample of this size moves on its own, so the annual figure is a fair summary.
- Jul–Sep 202530 flights96.7%
- Oct–Dec 202576 flights96.1%
- Jan–Mar 202665 flights96.9%
- Apr–Jun 202691 flights91.2%
- Jul–Sep 202660 flights91.7%
Scale runs 85% to 100%.
By weekday, UA 2453 ranged from 86.7% on Sunday to 97.8% on Wednesday. With about 46 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 2453 runs when it is late
UA 2453 often beats the schedule: 203 of 321 completed flights, 63%, arrived 15 minutes or more early. The 19 late arrivals split 9 under half an hour, 1 between 30 and 60 minutes, and 9 an hour or more.
- 15+ min early203 flights63.2%
- Within 15 min99 flights30.8%
- 15–29 min late9 flights2.8%
- 30–59 min late1 flights0.3%
- 1–2 hours late3 flights0.9%
- 2+ hours late6 flights1.9%
Scale runs 0% to 100%.
Share of 321 completed flights by arrival against schedule.
Only 17 of 321 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 2453
The latest arrival of the period was on 28 July 2026, 5 hours 7 minutes behind schedule; most of its delay minutes were filed as carrier-caused (crew, maintenance, fuelling, baggage). The same cause led on four of the five worst days.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 28 July 2026 | 5 hours 7 minutes | Carrier |
| 19 July 2026 | 5 hours 3 minutes | Carrier |
| 31 May 2026 | 3 hours 54 minutes | Carrier |
| 21 June 2026 | 3 hours 30 minutes | National Airspace System |
| 19 January 2026 | 3 hours 14 minutes | Carrier |
Delay causes
Why UA 2453 runs late
Carrier accounts for 74% of the 1,934 delay minutes carriers reported here, and the remaining four split what is left.
- 74%Carrier
- 26%National Airspace System
The largest share of delay minutes, 74%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 1,437 of the 1,934 delay minutes reported here. The split is drawn from 1,934 delay minutes reported on UA 2453.
Cancellations are rare at 0.31%, 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 2.8% 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.
The 816 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 five other city pairs in the data, including IAH to DEN (31), ORF to ORD (24) and RDU to EWR (14), but none flew often enough under UA 2453 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to JAX to IAH only.
One caution: this is a thin sample. 322 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 2453
For a booking, UA 2453 has one of the better records a US domestic flight can show: 94.1% on time and 0.31% cancelled. That is a base rate, not a promise about any single day.
Related
Where to go next
- Jacksonville International (JAX) 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.