Flight number record
UA 1709
United Airlines · Nashville to Washington
- Route
- BNA → IAD
- Departs
- 08:30
- Flights
- 286
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s UA 1709, check with United Airlines.
UA 1709 earns an A. More than four flights in five arrive inside the 15-minute window the DOT uses to define an on-time arrival, which puts it 8 points better than the national rate of 77.3%. When something does go wrong the average delay runs about an hour. That rests on 286 flights, with a median arrival 7 minutes early.
Set against the rest of the country, UA 1709's record is 8 points better than the US average of 77.3%. That gap is worth roughly 80 fewer late arrivals for every thousand flights.
Key figures
On time
85.3%
Arrivals under 15 minutes late, of 279 completed flights
Avg delay
59 min
Across delayed arrivals only, not all flights
Cancelled
2.45%
National rate is 1.89%
1 hour+ late
4.3%
National rate is 8.3%
These figures cover 286 flights between September 2025 and August 2026. The median arrival is 7 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.
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Schedule
When UA 1709 flies
UA 1709 is scheduled to leave Nashville (BNA) at 08:30 local time and reach Washington (IAD) at 11:17. That slot held for 253 of the 286 scheduled departures in the data, so the figures below describe one steady operation rather than a number that moved around the clock.
- Departs 08:30253 flights88.5%
- Departs 08:2531 flights10.8%
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 08:30 departure sits in the 8am–11am window. Across every US flight scheduled in that window the on-time rate is 83.9%, and UA 1709 runs level with that at 85.3%. Early departures usually start with an aircraft that has not flown yet that day, which is most of why the window does well.
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Against the route
UA 1709 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 1709 is 8 points ahead of 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%, which this flight beats by 7 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| UA 1709thin sample | 286 | 85.3% | 59 min | 2.45% | A |
| 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 1709 quarter by quarter
UA 1709 did not run the same all year. Its best quarter was Apr–Jun 2026 at 91.9% on time and its weakest Jan–Mar 2026 at 79.5%, a swing of 12 points on roughly 72 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 202519 flights—
- Oct–Dec 202568 flights80.9%
- Jan–Mar 202679 flights79.5%
- Apr–Jun 202675 flights91.9%
- Jul–Sep 202645 flights86.7%
Scale runs 70% to 95%. Rows with fewer than 30 flights show a dash.
By weekday, UA 1709 ranged from 81.6% on Monday to 89.6% on Friday. With about 41 flights behind each day, a spread of 8 points is inside normal variation, so the day you fly is not worth changing for this flight.
Arrival by arrival
How late UA 1709 runs when it is late
UA 1709 often beats the schedule: 76 of 279 completed flights, 27%, arrived 15 minutes or more early. Most of the lateness is short. 22 of the 41 late arrivals were under half an hour behind, and 12 reached an hour or more.
- 15+ min early76 flights27.2%
- Within 15 min162 flights58.1%
- 15–29 min late22 flights7.9%
- 30–59 min late7 flights2.5%
- 1–2 hours late8 flights2.9%
- 2+ hours late4 flights1.4%
Scale runs 0% to 100%.
Share of 279 completed flights by arrival against schedule.
5 of 34 late departures made up the time and arrived on time, 15% of them. 12 flights left on time and still arrived late.
The worst days
Worst days for UA 1709
The latest arrival of the period was on 1 July 2026, 5 hours 51 minutes behind schedule; most of its delay minutes were filed as a late-arriving aircraft. On four of the five worst days the largest share was filed as carrier-caused (crew, maintenance, fuelling, baggage).
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 1 July 2026 | 5 hours 51 minutes | Late-arriving aircraft |
| 16 October 2025 | 5 hours 26 minutes | Carrier |
| 29 March 2026 | 4 hours 33 minutes | Carrier |
| 7 March 2026 | 2 hours 1 minute | Carrier |
| 23 January 2026 | 1 hour 44 minutes | Carrier |
Delay causes
Why UA 1709 runs late
Carrier accounts for 73% of the 2,397 delay minutes carriers reported here, and the remaining four split what is left.
- 73%Carrier
- 15%Late-arriving aircraft
- 9%National Airspace System
- 3%Extreme weather
The largest share of delay minutes, 73%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 1,744 of the 2,397 delay minutes reported here. The split is drawn from 2,397 delay minutes reported on UA 1709.
Cancellations sit at 2.45% against a national 1.89%, which is ordinary. Diversions add another 0.00%.
Connections and routes
What a delay on this flight costs
Badly late arrivals are rare here: only 4.3% 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 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 CLE (124), IAD to BOS (96) and ORD to IAD (16), but none flew often enough under UA 1709 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. 286 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 1709
For a booking, read UA 1709 as 85.3% on time with 2.45% cancelled over 286 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 2125 on the same route78.6%
- 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
- The best day of the week to fly, and why it is the second lever
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.