Flight number record

UA 1264

United Airlines · Houston to Las Vegas

Route: IAH → LAS
Departs: 07:35
Flights: 314
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s UA 1264, check with United Airlines.

UA 1264 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 about an hour. That rests on 314 flights, with a median arrival 14 minutes early.

Set against the rest of the country, UA 1264's record is 17 points better than the US average of 77.6%. That gap is worth roughly 170 fewer late arrivals for every thousand flights.

On time

94.6%

Arrivals under 15 minutes late, of 314 completed flights

Avg delay

62 min

Across delayed arrivals only, not all flights

Cancelled

0.00%

National rate is 1.81%

1 hour+ late

1.6%

National rate is 8.1%

These figures cover 314 flights between July 2025 and June 2026. The median arrival is 14 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 1264 flies

UA 1264 flies IAH to LAS without a single fixed slot. Its most common scheduled departure was 07:35, used on 106 of 314 flights, with 07:25 (63 flights) and 07:30 (52 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 07:35106 flights33.8%
Departs 07:2563 flights20.1%
Departs 07:3052 flights16.6%

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 07:35 departure sits in the 5am–8am window. Across every US flight scheduled in that window the on-time rate is 89.3%, and UA 1264 runs 5 points better at 94.6%. 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 1264 next to IAH to LAS

Every carrier on IAH to LAS combined arrived on time 82.4% of the time across 3,457 flights, so UA 1264 is 12 points ahead of it. United flew 2,602 flights on the same city pair under all its flight numbers, including this one, and those ran 83.9% on time. Across its whole network United Airlines managed 79.0%, which this flight beats by 16 points.

UA 1264 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
UA 1264thin sample	314	94.6%	62 min	0.00%	A+
All United Airlines on IAH–LAS	2,602	83.9%	59 min	0.38%	B+
All carriers on IAH–LAS	3,457	82.4%	72 min	0.81%	B+
United Airlines, whole network	821,041	79.0%	72 min	1.01%	B

Across the year

UA 1264 quarter by quarter

Quarter by quarter UA 1264 held fairly steady: 90.7% in Jul–Sep 2025, 93.2% in Oct–Dec 2025, 98.8% in Jan–Mar 2026 and 94.5% in Apr–Jun 2026. A spread of 8 points is about what a sample of this size moves on its own, so the annual figure is a fair summary.

Jul–Sep 202554 flights90.7%
Oct–Dec 202588 flights93.2%
Jan–Mar 202681 flights98.8%
Apr–Jun 202691 flights94.5%

Scale runs 80% to 100%. Rows with fewer than 30 flights show a dash.

By weekday, UA 1264 ranged from 91.5% on Saturday to 100.0% on Tuesday. With about 45 flights behind each day, a spread of 9 points is inside normal variation, so the day you fly is not worth changing for this flight.

Delay causes

Why UA 1264 runs late

One category carries most of the weight here. Carrier accounts for 53% of the 1,060 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
53%
Late-arriving aircraft
39%
National Airspace System
5%
Extreme weather
4%

39% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. That is a cascade, and cascades start small and grow through the day. Across 1,060 reported delay minutes here, that single category outweighs weather by 10 to one. It is the strongest argument for booking the first departure of the morning, when the aircraft has been sitting at the gate overnight with nothing to inherit. The split is drawn from 1,060 delay minutes reported on UA 1264.

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 1.6% 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 1,222 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 seven other city pairs in the data, including DEN to JAX (37), LAS to EWR (15) and SFO to SMF (2), but none flew often enough under UA 1264 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to IAH to LAS only.

One caution: this is a thin sample. 314 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 1264

For a booking, UA 1264 has one of the better records a US domestic flight can show: 94.6% 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