Flight number record

UA 2025

United Airlines · Washington to San Juan

Route: IAD → SJU
Departs: 17:32
Flights: 262
Period: July 2025 to June 2026

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

UA 2025 sits in the middle of the pack with a C+. About seven flights in ten arrive on time by the DOT's definition, 5 points worse than the national rate of 77.6%. The late ones land roughly 50 minutes behind schedule. That rests on 262 flights, with a median arrival 2 minutes early.

The national on-time rate over the same period is 77.6%, so UA 2025 runs 5 points behind the country as a whole. Across a thousand flights that is about 49 extra late arrivals.

On time

72.7%

Arrivals under 15 minutes late, of 260 completed flights

Avg delay

51 min

Across delayed arrivals only, not all flights

Cancelled

0.38%

National rate is 1.81%

1 hour+ late

6.5%

National rate is 8.1%

These figures cover 262 flights between July 2025 and June 2026. The median arrival is 2 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 2025 flies

UA 2025 flies IAD to SJU without a single fixed slot. Its most common scheduled departure was 17:32, used on 154 of 262 flights, with 17:24 (94 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 17:32154 flights58.8%
Departs 17:2494 flights35.9%

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 17:32 departure sits in the 5pm–8pm window. Across every US flight scheduled in that window the on-time rate is 68.2%, and UA 2025 runs 5 points better at 72.7%. By that time of day most aircraft have flown several legs already, and whatever went wrong earlier is still in the schedule.

Against the route

UA 2025 next to IAD to SJU

Every carrier on IAD to SJU combined arrived on time 76.3% of the time across 698 flights, so UA 2025 is 4 points behind it. United flew 609 flights on the same city pair under all its flight numbers, including this one, and those ran 80.8% on time. Across its whole network United Airlines managed 79.0%, which this flight trails by 6 points.

UA 2025 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
UA 2025thin sample	262	72.7%	51 min	0.38%	C+
All United Airlines on IAD–SJU	609	80.8%	51 min	0.49%	B+
All carriers on IAD–SJU	698	76.3%	93 min	0.72%	B+
United Airlines, whole network	821,041	79.0%	72 min	1.01%	B

Across the year

UA 2025 quarter by quarter

UA 2025 did not run the same all year. Its best quarter was Apr–Jun 2026 at 85.7% on time and its weakest Oct–Dec 2025 at 58.2%, a swing of 28 points on roughly 87 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 202514 flights—
Oct–Dec 202567 flights58.2%
Jan–Mar 202690 flights71.6%
Apr–Jun 202691 flights85.7%

Scale runs 50% to 90%. Rows with fewer than 30 flights show a dash.

By weekday, UA 2025 did best on Wednesday at 82.9% on time and worst on Saturday at 61.9%. Each day rests on about 37 flights, so a gap of 21 points is worth noticing but could still narrow in another year.

Delay causes

Why UA 2025 runs late

One category carries most of the weight here. National Airspace System accounts for 44% of the 3,625 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
44%
Carrier
35%
Extreme weather
13%
Late-arriving aircraft
8%

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 3,625 delay minutes reported on UA 2025.

Cancellations are rare at 0.38%, 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

6.5% of arrivals land an hour or more late, close to the national 8.1%. That is the figure that decides a connection, and it says a 60 to 75 minute layover is reasonable here while anything under 45 minutes is a bet. Most delays on this route last roughly 50 minutes, which a normal layover absorbs.

At 1,572 miles this is transcontinental flying, and long routes get a quiet structural advantage. Scheduled block time on a flight this length carries more padding in absolute minutes, so a twenty-minute late departure often still becomes an on-time arrival. Read the on-time rate here as slightly flattering next to a short-haul route with the same operational quality.

The same number turns up on three other city pairs in the data, including SFO to DEN (37), DFW to DEN (31) and DEN to MKE (25), but none flew often enough under UA 2025 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to IAD to SJU only.

One caution: this is a thin sample. 262 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 2025

For a booking, read UA 2025 as 72.7% on time with 0.38% cancelled over 262 flights. Those are rates from the past twelve months, not a forecast for any particular 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