Flight number record
UA 2125
United Airlines · Nashville to Washington
- Route
- BNA → IAD
- Departs
- 13:35
- Flights
- 341
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s UA 2125, check with United Airlines.
UA 2125 lands a B+, about a point better than the national rate of 77.3%. About one flight in five arrives 15 minutes late or worse, and those flights are late by close to two hours on average. That rests on 341 flights, with a median arrival 1 minute early.
Key figures
On time
78.6%
Arrivals under 15 minutes late, of 337 completed flights
Avg delay
114 min
Across delayed arrivals only, not all flights
Cancelled
0.59%
National rate is 1.89%
1 hour+ late
10.7%
National rate is 8.3%
These figures cover 341 flights between September 2025 and August 2026. Beyond the headline rate, 10.7% of arrivals land a full hour or more behind schedule, against 8.3% nationally.
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Schedule
When UA 2125 flies
UA 2125 flies BNA to IAD without a single fixed slot. Its most common scheduled departure was 13:35, used on 113 of 341 flights, with 13:32 (77 flights) and 13:30 (73 flights) next.
- Departs 13:35113 flights33.1%
- Departs 13:3277 flights22.6%
- Departs 13:3073 flights21.4%
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 13:35 departure sits in the 11am–2pm window. Across every US flight scheduled in that window the on-time rate is 78.3%, and UA 2125 runs level with that at 78.6%. Midday slots inherit some of the morning's delays without yet carrying the full weight of the evening's.
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Against the route
UA 2125 next to BNA to IAD
Every carrier on BNA to IAD combined arrived on time 77.5% of the time across 997 flights, so UA 2125 is about level with it. United flew 927 flights on the same city pair under all its flight numbers, including this one, and those ran 77.2% on time. Across its whole network United Airlines managed 78.8%, close to this flight's figure.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| UA 2125thin sample | 341 | 78.6% | 114 min | 0.59% | B+ |
| All United Airlines on BNA–IAD | 927 | 77.2% | 92 min | 1.19% | B |
| All carriers on BNA–IAD | 997 | 77.5% | 92 min | 1.20% | B |
| United Airlines, whole network | 830,825 | 78.8% | 73 min | 1.02% | B |
Across the year
UA 2125 quarter by quarter
Quarter by quarter UA 2125 held fairly steady: 76.7% in Jul–Sep 2025, 75.6% in Oct–Dec 2025, 76.9% in Jan–Mar 2026, 83.3% in Apr–Jun 2026 and 78.7% 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.
- Jul–Sep 202530 flights76.7%
- Oct–Dec 202578 flights75.6%
- Jan–Mar 202680 flights76.9%
- Apr–Jun 202691 flights83.3%
- Jul–Sep 202662 flights78.7%
Scale runs 65% to 90%.
By weekday, UA 2125 did best on Wednesday at 85.7% on time and worst on Monday at 72.9%. Each day rests on about 49 flights, so a gap of 13 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late UA 2125 runs when it is late
The 72 late arrivals split 20 under half an hour, 16 between 30 and 60 minutes, and 36 an hour or more.
- 15+ min early39 flights11.6%
- Within 15 min226 flights67.1%
- 15–29 min late20 flights5.9%
- 30–59 min late16 flights4.7%
- 1–2 hours late19 flights5.6%
- 2+ hours late17 flights5.0%
Scale runs 0% to 100%.
Share of 337 completed flights by arrival against schedule.
13 of 76 late departures made up the time and arrived on time, 17% of them. 9 flights left on time and still arrived late.
The worst days
Worst days for UA 2125
The latest arrival of the period was on 6 March 2026, 19 hours 51 minutes behind schedule; most of its delay minutes were filed as carrier-caused (crew, maintenance, fuelling, baggage). The five worst days are spread across March, July, May and August, with no single month standing out.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 6 March 2026 | 19 hours 51 minutes | Carrier |
| 21 July 2026 | 19 hours 47 minutes | Extreme weather |
| 18 July 2026 | 7 hours 24 minutes | National Airspace System |
| 18 May 2026 | 6 hours 28 minutes | Late-arriving aircraft |
| 3 August 2026 | 5 hours 46 minutes | Carrier |
Delay causes
Why UA 2125 runs late
Late-arriving aircraft accounts for 45% of the 8,172 delay minutes carriers reported here, and the remaining four split what is left.
- 45%Late-arriving aircraft
- 27%Carrier
- 15%Extreme weather
- 13%National Airspace System
Extreme weather accounts for 15% 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 2.5 times the usual weather exposure. The split is drawn from 8,172 delay minutes reported on UA 2125.
Cancellations are rare at 0.59%, 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
10.7% of arrivals land a full hour or more behind schedule, against 8.3% nationally. Ninety minutes is the honest minimum for a connection here, and two hours if the onward flight is on a separate ticket.
The 542 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 four other city pairs in the data, including IAD to LAX (28), PHX to IAH (17) and IAH to IAD (1), but none flew often enough under UA 2125 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to BNA to IAD only.
One caution: this is a thin sample. 341 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 2125
For a booking, read UA 2125 as 78.6% on time with 0.59% cancelled over 341 flights. Those are rates from the past twelve months, not a forecast for any particular day.
Related
Where to go next
- BNA to IAD, every carrier and departure
- IAD to BNA, the return direction
- United Airlines 1709 on the same route85.3%
- Nashville International (BNA) delay statistics
- Washington Dulles International (IAD) 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
- Why the first flight of the morning is statistically safest
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.