Flight number record

UA 525

United Airlines · Austin to Washington

Route: AUS → IAD
Departs: 07:15
Flights: 327
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s UA 525, check with United Airlines.

UA 525 earns an A. Nearly every flight arrives inside the 15-minute window the DOT uses to define an on-time arrival, which puts it 16 points better than the national rate of 77.6%. When something does go wrong the average delay runs about 50 minutes. That rests on 327 flights, with a median arrival 11 minutes early.

Set against the rest of the country, UA 525's record is 16 points better than the US average of 77.6%. That gap is worth roughly 159 fewer late arrivals for every thousand flights.

On time

93.5%

Arrivals under 15 minutes late, of 322 completed flights

Avg delay

49 min

Across delayed arrivals only, not all flights

Cancelled

1.22%

National rate is 1.81%

1 hour+ late

1.2%

National rate is 8.1%

These figures cover 327 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 525 flies

UA 525 flies AUS to IAD without a single fixed slot. Its most common scheduled departure was 07:15, used on 257 of 327 flights, with 07:30 (60 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 07:15257 flights78.6%
Departs 07:3060 flights18.3%

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 07:15 departure sits in the 5am–8am window. Across every US flight scheduled in that window the on-time rate is 89.3%, and UA 525 runs 4 points better at 93.5%. 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 525 next to AUS to IAD

Every carrier on AUS to IAD combined arrived on time 89.1% of the time across 1,049 flights, so UA 525 is 4 points ahead of it. United flew 1,007 flights on the same city pair under all its flight numbers, including this one, and those ran 90.0% on time. Across its whole network United Airlines managed 79.0%, which this flight beats by 15 points.

UA 525 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
UA 525thin sample	327	93.5%	49 min	1.22%	A
All United Airlines on AUS–IAD	1,007	90.0%	67 min	0.79%	A+
All carriers on AUS–IAD	1,049	89.1%	88 min	0.76%	A+
United Airlines, whole network	821,041	79.0%	72 min	1.01%	B

Across the year

UA 525 quarter by quarter

Quarter by quarter UA 525 held fairly steady: 93.1% in Jul–Sep 2025, 92.3% in Oct–Dec 2025, 95.5% in Jan–Mar 2026 and 93.3% in Apr–Jun 2026. A spread of 3 points is about what a sample of this size moves on its own, so the annual figure is a fair summary.

Jul–Sep 202588 flights93.1%
Oct–Dec 202578 flights92.3%
Jan–Mar 202670 flights95.5%
Apr–Jun 202691 flights93.3%

Scale runs 85% to 100%. Rows with fewer than 30 flights show a dash.

By weekday, UA 525 ranged from 87.8% on Thursday to 97.7% on Wednesday. With about 47 flights behind each day, a spread of 10 points is inside normal variation, so the day you fly is not worth changing for this flight.

Delay causes

Why UA 525 runs late

One category carries most of the weight here. Carrier accounts for 54% of the 1,033 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
30%
National Airspace System
12%
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 558 of the 1,033 delay minutes reported here. The split is drawn from 1,033 delay minutes reported on UA 525.

Cancellations sit at 1.22% against a national 1.81%, which is ordinary. Diversions add another 0.31%.

Connections and routes

What a delay on this flight costs

Badly late arrivals are rare here: only 1.2% 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 1,297 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 one other city pair in the data, including DEN to TUS (19), but none flew often enough under UA 525 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to AUS to IAD only.

One caution: this is a thin sample. 327 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 525

For a booking, UA 525 has one of the better records a US domestic flight can show: 93.5% on time and 1.22% 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