Flight number record
UA 2453
United Airlines · Jacksonville to Houston
- Route
- JAX → IAH
- Departs
- 07:00
- Flights
- 324
- Period
- July 2025 to June 2026
Historical statistics for July 2025 to June 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 77.6%. When something does go wrong the average delay runs an hour and a half. That rests on 324 flights, with a median arrival 20 minutes early.
Set against the rest of the country, UA 2453's record is 17 points better than the US average of 77.6%. That gap is worth roughly 168 fewer late arrivals for every thousand flights.
Key figures
On time
94.4%
Arrivals under 15 minutes late, of 322 completed flights
Avg delay
94 min
Across delayed arrivals only, not all flights
Cancelled
0.62%
National rate is 1.81%
1 hour+ late
2.5%
National rate is 8.1%
These figures cover 324 flights between July 2025 and June 2026. The median arrival is 20 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 2453 flies
UA 2453 flies JAX to IAH without a single fixed slot. Its most common scheduled departure was 07:00, used on 142 of 324 flights, with 06:35 (53 flights) and 07:25 (48 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.
- Departs 07:00142 flights43.8%
- Departs 06:3553 flights16.4%
- Departs 07:2548 flights14.8%
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 2453 runs 5 points better at 94.4%. 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 2453 next to JAX to IAH
Every carrier on JAX to IAH combined arrived on time 87.5% of the time across 719 flights, so UA 2453 is 7 points ahead of it. United flew 694 flights on the same city pair under all its flight numbers, including this one, and those ran 88.2% on time. Across its whole network United Airlines managed 79.0%, which this flight beats by 15 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| UA 2453thin sample | 324 | 94.4% | 94 min | 0.62% | A+ |
| All United Airlines on JAX–IAH | 694 | 88.2% | 71 min | 0.58% | A+ |
| All carriers on JAX–IAH | 719 | 87.5% | 85 min | 0.56% | A+ |
| United Airlines, whole network | 821,041 | 79.0% | 72 min | 1.01% | B |
Across the year
UA 2453 quarter by quarter
Quarter by quarter UA 2453 held fairly steady: 94.5% in Jul–Sep 2025, 96.1% in Oct–Dec 2025, 96.9% in Jan–Mar 2026 and 91.2% in Apr–Jun 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 202592 flights94.5%
- Oct–Dec 202576 flights96.1%
- Jan–Mar 202665 flights96.9%
- Apr–Jun 202691 flights91.2%
Scale runs 85% to 100%. Rows with fewer than 30 flights show a dash.
By weekday, UA 2453 ranged from 89.4% on Monday to 100.0% on Tuesday. 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.
Delay causes
Why UA 2453 runs late
One category carries most of the weight here. Carrier accounts for 49% of the 1,691 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.
- 49%Carrier
- 30%National Airspace System
- 21%Late-arriving aircraft
The largest share of delay minutes, 49%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. Unlike weather, that is a management outcome, and it is the category where the gap between two carriers on the same schedule is genuinely earned. It accounts for 821 of the 1,691 delay minutes reported here. The split is drawn from 1,691 delay minutes reported on UA 2453.
Cancellations are rare at 0.62%, 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 2.5% 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.
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. It is also long enough that the aircraft usually flies three or four legs a day rather than six, which slows how fast delay compounds.
The same number turns up on three 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. 324 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: 94.4% on time and 0.62% cancelled. That is a base rate, not a promise about any single day.
Related
Where to go next
- JAX to IAH, every carrier and departure
- IAH to JAX, the return direction
- 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, July 2025 to June 2026. Last updated 15 September 2026; recomputed monthly. How this data is collected.