Flight number record
UA 1825
United Airlines · Washington to Fort Lauderdale
- Route
- IAD → FLL
- Departs
- 08:15
- Flights
- 250
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 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 77.3%. When something does go wrong the average delay runs about 50 minutes. That rests on 250 flights, with a median arrival 11 minutes early.
Set against the rest of the country, UA 1825's record is 12 points better than the US average of 77.3%. That gap is worth roughly 118 fewer late arrivals for every thousand flights.
Key figures
On time
89.1%
Arrivals under 15 minutes late, of 247 completed flights
Avg delay
49 min
Across delayed arrivals only, not all flights
Cancelled
0.40%
National rate is 1.89%
1 hour+ late
2.4%
National rate is 8.3%
These figures cover 250 flights between September 2025 and August 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.
Fare search by Aviasales, a Travelpayouts partner. Booking through it may earn this site a commission at no cost to you; it changes no figure here.
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 110 of 250 flights, with 08:20 (59 flights) and 08:28 (36 flights) next.
- Departs 08:15110 flights44.0%
- Departs 08:2059 flights23.6%
- Departs 08:2836 flights14.4%
Scale runs 0% to 100%.
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 83.9%, and UA 1825 runs 5 points better at 89.1%. Early departures usually start with an aircraft that has not flown yet that day, which is most of why the window does well.
Timetable by Aviasales, a Travelpayouts partner. Booking through it may earn this site a commission at no cost to you; it changes no figure here.
Against the route
UA 1825 next to IAD to FLL
Every carrier on IAD to FLL combined arrived on time 79.0% of the time across 802 flights, so UA 1825 is 10 points ahead of it. United flew 699 flights on the same city pair under all its flight numbers, including this one, and those ran 83.5% on time. Across its whole network United Airlines managed 78.8%, which this flight beats by 10 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| UA 1825thin sample | 250 | 89.1% | 49 min | 0.40% | A+ |
| All United Airlines on IAD–FLL | 699 | 83.5% | 71 min | 0.57% | B+ |
| All carriers on IAD–FLL | 802 | 79.0% | 79 min | 1.00% | B |
| United Airlines, whole network | 830,825 | 78.8% | 73 min | 1.02% | B |
Across the year
UA 1825 quarter by quarter
Quarter by quarter UA 1825 held fairly steady: 85.1% in Oct–Dec 2025, 92.0% in Jan–Mar 2026, 92.9% in Apr–Jun 2026 and 85.7% in Jul–Sep 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.
- Oct–Dec 202567 flights85.1%
- Jan–Mar 202677 flights92.0%
- Apr–Jun 202657 flights92.9%
- Jul–Sep 202649 flights85.7%
Scale runs 75% to 100%.
By weekday, UA 1825 ranged from 84.1% on Sunday to 90.9% on Saturday. With about 36 flights behind each day, a spread of 7 points is inside normal variation, so the day you fly is not worth changing for this flight.
Arrival by arrival
How late UA 1825 runs when it is late
UA 1825 often beats the schedule: 95 of 247 completed flights, 38%, arrived 15 minutes or more early. Most of the lateness is short. 17 of the 27 late arrivals were under half an hour behind, and 6 reached an hour or more.
- 15+ min early95 flights38.5%
- Within 15 min125 flights50.6%
- 15–29 min late17 flights6.9%
- 30–59 min late4 flights1.6%
- 1–2 hours late3 flights1.2%
- 2+ hours late3 flights1.2%
Scale runs 0% to 100%.
Share of 247 completed flights by arrival against schedule.
Only 15 of 247 completed flights left 15 minutes late or more, too few to say how often the time is made up.
The worst days
Worst days for UA 1825
The latest arrival of the period was on 26 January 2026, 4 hours 7 minutes behind schedule; most of its delay minutes were filed as extreme weather. On three of the five worst days the largest share was filed as national airspace system delay.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 26 January 2026 | 4 hours 7 minutes | Extreme weather |
| 14 December 2025 | 3 hours 8 minutes | Carrier |
| 16 March 2026 | 2 hours 15 minutes | National Airspace System |
| 8 November 2025 | 1 hour 54 minutes | National Airspace System |
| 18 July 2026 | 1 hour 19 minutes | National Airspace System |
Delay causes
Why UA 1825 runs late
National Airspace System accounts for 61% of the 1,328 delay minutes carriers reported here, and the remaining four split what is left.
- 61%National Airspace System
- 21%Carrier
- 13%Extreme weather
- 5%Late-arriving aircraft
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 2.2 times the usual weather exposure. The split is drawn from 1,328 delay minutes reported on UA 1825.
Cancellations are rare at 0.40%, below the national 1.89% 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 8.3% 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.
The same number turns up on eight other city pairs in the data, including SFO to SLC (47), 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: 89.1% on time and 0.40% cancelled. That is a base rate, not a promise about any single day.
Related
Where to go next
- IAD to FLL, every carrier and departure
- FLL to IAD, the return direction
- Washington Dulles International (IAD) delay statistics
- Fort Lauderdale-Hollywood International (FLL) delay statistics
- United Airlines on-time record
- Every United Airlines flight number with a record
- The most and least reliable flight numbers in the US
- Late aircraft, weather, or the airline: what actually causes US flight delays
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, September 2025 to August 2026. Last updated ; recomputed monthly. How this data is collected.