Flight number record

UA 1825

United Airlines · Washington to Fort Lauderdale

Route: IAD → FLL
Departs: 08:15
Flights: 250
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s UA 1825, check with United Airlines.

UA 1825 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 12 points better than the national rate of 77.6%. When something does go wrong the average delay runs roughly 50 minutes. That rests on 250 flights, with a median arrival 12 minutes early.

Set against the rest of the country, UA 1825's record is 12 points better than the US average of 77.6%. That gap is worth roughly 119 fewer late arrivals for every thousand flights.

On time

89.5%

Arrivals under 15 minutes late, of 247 completed flights

Avg delay

52 min

Across delayed arrivals only, not all flights

Cancelled

0.40%

National rate is 1.81%

1 hour+ late

2.4%

National rate is 8.1%

These figures cover 250 flights between July 2025 and June 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.

Schedule

When UA 1825 flies

UA 1825 flies IAD to FLL without a single fixed slot. Its most common scheduled departure was 08:15, used on 89 of 250 flights, with 08:20 (85 flights) and 08:28 (36 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 08:1589 flights35.6%
Departs 08:2085 flights34.0%
Departs 08:2836 flights14.4%

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 08:15 departure sits in the 8am–11am window. Across every US flight scheduled in that window the on-time rate is 84.1%, and UA 1825 runs 5 points better at 89.5%. 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 1825 next to IAD to FLL

Every carrier on IAD to FLL combined arrived on time 82.9% of the time across 760 flights, so UA 1825 is 7 points ahead of it. United flew 719 flights on the same city pair under all its flight numbers, including this one, and those ran 84.4% on time. Across its whole network United Airlines managed 79.0%, which this flight beats by 11 points.

UA 1825 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
UA 1825thin sample	250	89.5%	52 min	0.40%	A+
All United Airlines on IAD–FLL	719	84.4%	67 min	0.56%	B+
All carriers on IAD–FLL	760	82.9%	69 min	0.53%	B+
United Airlines, whole network	821,041	79.0%	72 min	1.01%	B

Across the year

UA 1825 quarter by quarter

Quarter by quarter UA 1825 held fairly steady: 87.8% in Jul–Sep 2025, 85.1% in Oct–Dec 2025, 92.0% in Jan–Mar 2026 and 92.9% 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 202549 flights87.8%
Oct–Dec 202567 flights85.1%
Jan–Mar 202677 flights92.0%
Apr–Jun 202657 flights92.9%

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

By weekday, UA 1825 ranged from 82.9% on Friday to 91.4% on Thursday. With about 36 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 1825 runs late

One category carries most of the weight here. National Airspace System accounts for 54% of the 1,352 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.

National Airspace System
54%
Carrier
23%
Extreme weather
13%
Late-arriving aircraft
10%

Extreme weather accounts for 13% of delay minutes, well above the single-digit share typical across the system. Weather delays are lumpy: they arrive as whole bad days rather than as a steady drag, so the quarterly figures above are the more useful view of the risk. The national share is 6%, so this operation carries roughly 2.1 times the usual weather exposure. The split is drawn from 1,352 delay minutes reported on UA 1825.

Cancellations are rare at 0.40%, 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 2.4% 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 901 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 SFO to SLC (56), SLC to IAH (31) and SBA to SFO (23), but none flew often enough under UA 1825 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to IAD to FLL only.

One caution: this is a thin sample. 250 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 1825

For a booking, UA 1825 has one of the better records a US domestic flight can show: 89.5% on time and 0.40% 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