Flight number record
UA 1383
United Airlines · Houston to Santa Ana
- Route
- IAH → SNA
- Departs
- 09:30
- Flights
- 365
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s UA 1383, check with United Airlines.
UA 1383 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 77.3%. When something does go wrong the average delay runs roughly 40 minutes. That rests on 365 flights, with a median arrival 12 minutes early.
Set against the rest of the country, UA 1383's record is 14 points better than the US average of 77.3%. That gap is worth roughly 139 fewer late arrivals for every thousand flights.
Key figures
On time
91.2%
Arrivals under 15 minutes late, of 365 completed flights
Avg delay
42 min
Across delayed arrivals only, not all flights
Cancelled
0.00%
National rate is 1.89%
1 hour+ late
1.9%
National rate is 8.3%
These figures cover 365 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 1383 flies
UA 1383 flies IAH to SNA without a single fixed slot. Its most common scheduled departure was 09:30, used on 241 of 365 flights.
- Departs 09:30241 flights66.0%
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 09:30 departure sits in the 8am–11am window. Across every US flight scheduled in that window the on-time rate is 83.9%, and UA 1383 runs 7 points better at 91.2%. 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 1383 next to IAH to SNA
Every carrier on IAH to SNA combined arrived on time 88.5% of the time across 1,092 flights, so UA 1383 is 3 points ahead of it. Across its whole network United Airlines managed 78.8%, which this flight beats by 12 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| UA 1383 | 365 | 91.2% | 42 min | 0.00% | A+ |
| All United Airlines on IAH–SNA | 1,092 | 88.5% | 45 min | 0.00% | A+ |
| All carriers on IAH–SNA | 1,092 | 88.5% | 45 min | 0.00% | A+ |
| United Airlines, whole network | 830,825 | 78.8% | 73 min | 1.02% | B |
Across the year
UA 1383 quarter by quarter
UA 1383 did not run the same all year. Its best quarter was Oct–Dec 2025 at 96.7% on time and its weakest Apr–Jun 2026 at 83.5%, a swing of 13 points on roughly 73 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 202530 flights93.3%
- Oct–Dec 202592 flights96.7%
- Jan–Mar 202690 flights95.6%
- Apr–Jun 202691 flights83.5%
- Jul–Sep 202662 flights87.1%
Scale runs 75% to 100%.
By weekday, UA 1383 ranged from 88.5% on Sunday to 94.3% on Monday. With about 52 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 1383 runs when it is late
UA 1383 often beats the schedule: 151 of 365 completed flights, 41%, arrived 15 minutes or more early. The 32 late arrivals split 13 under half an hour, 12 between 30 and 60 minutes, and 7 an hour or more. Not one arrived two hours late.
- 15+ min early151 flights41.4%
- Within 15 min182 flights49.9%
- 15–29 min late13 flights3.6%
- 30–59 min late12 flights3.3%
- 1–2 hours late7 flights1.9%
- 2+ hours late0 flights0.0%
Scale runs 0% to 100%.
Share of 365 completed flights by arrival against schedule.
A late pushback is often recovered here: of 35 departures that left 15 minutes late or more, 11 still arrived on time. 8 flights left on time and still arrived late.
The worst days
Worst days for UA 1383
The latest arrival of the period was on 27 May 2026, 1 hour 51 minutes behind schedule; most of its delay minutes were filed as a late-arriving aircraft. The same cause led on three of the five worst days.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 27 May 2026 | 1 hour 51 minutes | Late-arriving aircraft |
| 30 November 2025 | 1 hour 50 minutes | Late-arriving aircraft |
| 12 June 2026 | 1 hour 37 minutes | Late-arriving aircraft |
| 7 May 2026 | 1 hour 32 minutes | Carrier |
| 18 June 2026 | 1 hour 30 minutes | Carrier |
Delay causes
Why UA 1383 runs late
Carrier accounts for 56% of the 1,358 delay minutes carriers reported here, and the remaining four split what is left.
- 56%Carrier
- 25%Late-arriving aircraft
- 16%National Airspace System
- 3%Extreme weather
The largest share of delay minutes, 56%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 762 of the 1,358 delay minutes reported here. The split is drawn from 1,358 delay minutes reported on UA 1383.
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 1.9% 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 1,346 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.
UA 1383 is not only a IAH to SNA flight. It also flew RDU to IAH (296 flights, 92.2% on time) often enough to be scored on its own. Airlines attach one number to several legs of an aircraft's day, and each leg keeps its own record here, so check which city pair is on your booking before reading a rate.
One caution: this is a thin sample. 365 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.
| Also flown as | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| RDU to IAHthin sample | 296 | 92.2% | 62 min | 1.01% | A |
What to do with this
Booking UA 1383
For a booking, UA 1383 has one of the better records a US domestic flight can show: 91.2% on time and 0.00% cancelled. That is a base rate, not a promise about any single day.
Related
Where to go next
- IAH to SNA, every carrier and departure
- SNA to IAH, the return direction
- George Bush Intercontinental (IAH) delay statistics
- John Wayne Airport (SNA) 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.