Flight number record
UA 1794
United Airlines · Houston to Memphis
- Route
- IAH → MEM
- Departs
- 20:21
- Flights
- 324
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s UA 1794, check with United Airlines.
UA 1794 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 77.3%. The late ones land about 50 minutes behind schedule. That rests on 324 flights, with a median arrival 3 minutes early.
The national on-time rate over the same period is 77.3%, so UA 1794 runs 5 points behind the country as a whole. Across a thousand flights that is about 48 extra late arrivals.
Key figures
On time
72.5%
Arrivals under 15 minutes late, of 320 completed flights
Avg delay
50 min
Across delayed arrivals only, not all flights
Cancelled
1.23%
National rate is 1.89%
1 hour+ late
5.6%
National rate is 8.3%
These figures cover 324 flights between September 2025 and August 2026. The median arrival is 3 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 1794 flies
UA 1794 flies IAH to MEM without a single fixed slot. Its most common scheduled departure was 20:21, used on 80 of 324 flights, with 20:05 (71 flights) and 20:20 (37 flights) next.
- Departs 20:2180 flights24.7%
- Departs 20:0571 flights21.9%
- Departs 20:2037 flights11.4%
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 20:21 departure sits in the 8pm–5am window. Across every US flight scheduled in that window the on-time rate is 70.1%, and UA 1794 runs 2 points better at 72.5%. By that time of day most aircraft have flown several legs already, and whatever went wrong earlier is still in the schedule.
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Against the route
UA 1794 next to IAH to MEM
Every carrier on IAH to MEM combined arrived on time 80.6% of the time across 1,075 flights, so UA 1794 is 8 points behind it. Across its whole network United Airlines managed 78.8%, which this flight trails by 6 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| UA 1794thin sample | 324 | 72.5% | 50 min | 1.23% | C |
| All United Airlines on IAH–MEMthin sample | 356 | 72.4% | 49 min | 1.12% | C |
| All carriers on IAH–MEM | 1,075 | 80.6% | 59 min | 1.02% | B |
| United Airlines, whole network | 830,825 | 78.8% | 73 min | 1.02% | B |
Across the year
UA 1794 quarter by quarter
UA 1794 did not run the same all year. Its best quarter was Jul–Sep 2025 at 90.0% on time and its weakest Oct–Dec 2025 at 60.8%, a swing of 29 points on roughly 65 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 202530 flights90.0%
- Oct–Dec 202574 flights60.8%
- Jan–Mar 202690 flights73.6%
- Apr–Jun 202691 flights75.6%
- Jul–Sep 202639 flights71.8%
Scale runs 50% to 95%.
By weekday, UA 1794 did best on Wednesday at 89.1% on time and worst on Monday at 65.2%. Each day rests on about 46 flights, so a gap of 24 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late UA 1794 runs when it is late
The 88 late arrivals split 36 under half an hour, 34 between 30 and 60 minutes, and 18 an hour or more.
- 15+ min early65 flights20.3%
- Within 15 min167 flights52.2%
- 15–29 min late36 flights11.3%
- 30–59 min late34 flights10.6%
- 1–2 hours late9 flights2.8%
- 2+ hours late9 flights2.8%
Scale runs 0% to 100%.
Share of 320 completed flights by arrival against schedule.
13 of 85 late departures made up the time and arrived on time, 15% of them. In the other direction, 16 flights left on time yet arrived 15 minutes late or more, so that delay built up after pushback: in the air, in a holding pattern or on the ground at MEM.
The worst days
Worst days for UA 1794
The latest arrival of the period was on 7 March 2026, 3 hours 46 minutes behind schedule; most of its delay minutes were filed as a late-arriving aircraft. The same cause led on three of the five worst days.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 7 March 2026 | 3 hours 46 minutes | Late-arriving aircraft |
| 18 May 2026 | 3 hours 29 minutes | Late-arriving aircraft |
| 24 November 2025 | 3 hours 23 minutes | Carrier |
| 19 June 2026 | 2 hours 49 minutes | Carrier |
| 15 March 2026 | 2 hours 15 minutes | Late-arriving aircraft |
Delay causes
Why UA 1794 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 4,404 reported delay minutes.
- 42%Late-arriving aircraft
- 42%Carrier
- 12%National Airspace System
- 4%Extreme weather
42% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 4,404 reported delay minutes here, that single category outweighs weather by 10 to one. The split is drawn from 4,404 delay minutes reported on UA 1794.
Cancellations sit at 1.23% against a national 1.89%, which is ordinary. Diversions add another 0.00%.
Connections and routes
What a delay on this flight costs
5.6% of arrivals land an hour or more late, close to the national 8.3%, so a 60 to 75 minute layover is reasonable here while anything under 45 minutes is a bet. Most delays on this route last about 50 minutes, which a normal layover absorbs.
The same number turns up on five other city pairs in the data, including LGA to IAH (154), PDX to IAH (129) and MCO to IAH (19), but none flew often enough under UA 1794 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to IAH to MEM only.
One caution: this is a thin sample. 324 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 1794
For a booking, UA 1794 is one of the weaker ways to fly IAH to MEM: 8 points below the route as a whole. If the schedule allows, compare it with the other departures listed on the route page before settling on this one.
Related
Where to go next
- IAH to MEM, every carrier and departure
- MEM to IAH, the return direction
- SkyWest Airlines 5758 on the same route87.6%
- George Bush Intercontinental (IAH) delay statistics
- Memphis International (MEM) 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.