Flight number record
UA 2174
United Airlines · Houston to Nashville
- Route
- IAH → BNA
- Departs
- 07:40
- Flights
- 266
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s UA 2174, check with United Airlines.
UA 2174 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 9 points better than the national rate of 77.3%. When something does go wrong the average delay runs roughly 40 minutes. That rests on 266 flights, with a median arrival 6 minutes early.
Set against the rest of the country, UA 2174's record is 9 points better than the US average of 77.3%. That gap is worth roughly 94 fewer late arrivals for every thousand flights.
Key figures
On time
86.7%
Arrivals under 15 minutes late, of 263 completed flights
Avg delay
41 min
Across delayed arrivals only, not all flights
Cancelled
0.38%
National rate is 1.89%
1 hour+ late
2.7%
National rate is 8.3%
These figures cover 266 flights between September 2025 and August 2026. The median arrival is 6 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 2174 flies
UA 2174 flies IAH to BNA without a single fixed slot. Its most common scheduled departure was 07:40, used on 80 of 266 flights, with 07:35 (79 flights) and 07:30 (76 flights) next.
- Departs 07:4080 flights30.1%
- Departs 07:3579 flights29.7%
- Departs 07:3076 flights28.6%
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 07:40 departure sits in the 5am–8am window. Across every US flight scheduled in that window the on-time rate is 89.3%, and UA 2174 runs 3 points worse at 86.7%. 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 2174 next to IAH to BNA
Every carrier on IAH to BNA combined arrived on time 73.4% of the time across 1,429 flights, so UA 2174 is 13 points ahead of it. United flew 1,053 flights on the same city pair under all its flight numbers, including this one, and those ran 74.7% on time. Across its whole network United Airlines managed 78.8%, which this flight beats by 8 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| UA 2174thin sample | 266 | 86.7% | 41 min | 0.38% | A+ |
| All United Airlines on IAH–BNA | 1,053 | 74.7% | 57 min | 0.47% | C+ |
| All carriers on IAH–BNA | 1,429 | 73.4% | 62 min | 0.56% | C+ |
| United Airlines, whole network | 830,825 | 78.8% | 73 min | 1.02% | B |
Across the year
UA 2174 quarter by quarter
UA 2174 did not run the same all year. Its best quarter was Jul–Sep 2026 at 89.7% on time and its weakest Apr–Jun 2026 at 76.3%, a swing of 13 points on roughly 67 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 202529 flights—
- Oct–Dec 202574 flights86.5%
- Jan–Mar 202666 flights89.2%
- Apr–Jun 202639 flights76.3%
- Jul–Sep 202658 flights89.7%
Scale runs 70% to 95%. Rows with fewer than 30 flights show a dash.
By weekday, UA 2174 did best on Thursday at 92.5% on time and worst on Sunday at 77.5%. Each day rests on about 38 flights, so a gap of 15 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late UA 2174 runs when it is late
Most of the lateness is short. 18 of the 35 late arrivals were under half an hour behind, and 7 reached an hour or more.
- 15+ min early40 flights15.2%
- Within 15 min188 flights71.5%
- 15–29 min late18 flights6.8%
- 30–59 min late10 flights3.8%
- 1–2 hours late6 flights2.3%
- 2+ hours late1 flights0.4%
Scale runs 0% to 100%.
Share of 263 completed flights by arrival against schedule.
Only 19 of 263 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 2174
The latest arrival of the period was on 23 July 2026, 2 hours 23 minutes behind schedule; most of its delay minutes were filed as a late-arriving aircraft. The same cause led on four of the five worst days.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 23 July 2026 | 2 hours 23 minutes | Late-arriving aircraft |
| 8 June 2026 | 1 hour 53 minutes | Late-arriving aircraft |
| 26 October 2025 | 1 hour 35 minutes | Late-arriving aircraft |
| 20 February 2026 | 1 hour 27 minutes | Carrier |
| 7 September 2025 | 1 hour 5 minutes | Late-arriving aircraft |
Delay causes
Why UA 2174 runs late
Carriers report a reason for every delay minute they cause, in five DOT categories. The split below is by minutes, not by number of flights, so a handful of very long weather delays weighs as much as many short ones. It covers 1,448 reported delay minutes.
- 36%Carrier
- 34%National Airspace System
- 30%Late-arriving aircraft
The largest share of delay minutes, 36%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 518 of the 1,448 delay minutes reported here. The split is drawn from 1,448 delay minutes reported on UA 2174.
Cancellations are rare at 0.38%, 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 2.7% 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 657 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 five other city pairs in the data, including BNA to EWR (103), PBI to IAD (32) and MCI to IAH (19), but none flew often enough under UA 2174 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to IAH to BNA only.
One caution: this is a thin sample. 266 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 2174
For a booking, UA 2174 has one of the better records a US domestic flight can show: 86.7% on time and 0.38% cancelled. That is a base rate, not a promise about any single day.
Related
Where to go next
- IAH to BNA, every carrier and departure
- BNA to IAH, the return direction
- SkyWest Airlines 4785 on the same route71.6%
- George Bush Intercontinental (IAH) delay statistics
- Nashville International (BNA) 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.