Flight number record

UA 1383

United Airlines · Houston to Santa Ana

Route: IAH → SNA
Departs: 09:30
Flights: 365
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 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 77.6%. When something does go wrong the average delay runs roughly 45 minutes. That rests on 365 flights, with a median arrival 11 minutes early.

Set against the rest of the country, UA 1383's record is 14 points better than the US average of 77.6%. That gap is worth roughly 141 fewer late arrivals for every thousand flights.

On time

91.7%

Arrivals under 15 minutes late, of 363 completed flights

Avg delay

47 min

Across delayed arrivals only, not all flights

Cancelled

0.00%

National rate is 1.81%

1 hour+ late

2.2%

National rate is 8.1%

These figures cover 365 flights between July 2025 and June 2026. The median arrival is 11 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 1383 flies

UA 1383 flies IAH to SNA without a single fixed slot. Its most common scheduled departure was 09:30, used on 248 of 365 flights. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 09:30248 flights67.9%

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 09:30 departure sits in the 8am–11am window. Across every US flight scheduled in that window the on-time rate is 84.1%, and UA 1383 runs 8 points better at 91.7%. 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 1383 next to IAH to SNA

Every carrier on IAH to SNA combined arrived on time 87.2% of the time across 1,094 flights, so UA 1383 is 5 points ahead of it. Across its whole network United Airlines managed 79.0%, which this flight beats by 13 points.

UA 1383 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
UA 1383	365	91.7%	47 min	0.00%	A+
All United Airlines on IAH–SNA	1,094	87.2%	53 min	0.18%	A+
All carriers on IAH–SNA	1,094	87.2%	53 min	0.18%	A+
United Airlines, whole network	821,041	79.0%	72 min	1.01%	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 91 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 202592 flights91.1%
Oct–Dec 202592 flights96.7%
Jan–Mar 202690 flights95.6%
Apr–Jun 202691 flights83.5%

Scale runs 75% to 100%. Rows with fewer than 30 flights show a dash.

By weekday, UA 1383 ranged from 86.5% on Sunday to 94.3% on Tuesday. With about 52 flights behind each day, a spread of 8 points is inside normal variation, so the day you fly is not worth changing for this flight.

Delay causes

Why UA 1383 runs late

One category carries most of the weight here. Carrier accounts for 54% of the 1,413 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.

Carrier
54%
Late-arriving aircraft
28%
National Airspace System
15%
Extreme weather
3%

The largest share of delay minutes, 54%, 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 767 of the 1,413 delay minutes reported here. The split is drawn from 1,413 delay minutes reported on UA 1383.

Cancellations are rare at 0.00%, below the national 1.81% 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 2.2% 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 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. 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.

UA 1383 is not only a IAH to SNA flight. It also flew RDU to IAH (337 flights, 91.9% 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.

Other routes flown as UA 1383
Also flown as	Flights	On time	Avg delay	Cancelled	Grade
RDU to IAHthin sample	337	91.9%	87 min	1.19%	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: 91.7% on time and 0.00% cancelled. That is a base rate, not a promise about any single day.

Where to go next

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.

Key figures