Flight profile · United Airlines
UA1794
Houston (IAH) to Memphis (MEM) · scheduled 8:10 PM – 9:48 PM
How UA1794 performs
1,038 operations, July 2023 – July 2026.
UA1794 arrived on time 68.9% of the time, against 75.7% for all IAH → MEM flights, so this departure is 6.8 percentage points worse than the route as a whole.
Source: US DOT Bureau of Transportation Statistics · 1,038 operations, July 2023 – July 2026 · If UA1794 is cancelled or significantly changed, DOT’s automatic refund rule may entitle you to your money back. The refund checker walks through eligibility.
What stands out
How UA1794 compares to other flight numbers, not just to itself.
Which day you fly matters unusually much here, a wider weekday spread than 100% of 1,710 comparable flight numbers.
86.2% on time on a typical Wednesday, against 58.1% on a Sunday.
Source: FlyerIntel analysis of US DOT BTS data · July 2023 – July 2026 · The one thing about this specific departure that ranks most extreme against every other published flight number, out of everything FlyerIntel checks — shown only when something clears a real statistical bar, not for every flight.
Where UA1794 is right now
A live reading, only if you ask for it. It is not part of the reliability record above.
Ask for the position of UA1794 right now, if receivers on the ground are hearing it. Nothing is requested until you press the button.
Against the rest of the route
| Flight or route | On time | Cancelled | Median delay | Severe | Flights |
|---|---|---|---|---|---|
| UA1794 | 68.9% | 1.64% | 1 min | 9.8% | 1,038 |
| United Airlines on IAH → MEM | 69.8% | 1.51% | -1 min | 9.5% | 1,127 |
| All IAH → MEM flights | 75.7% | 1.42% | -3 min | 8.7% | 2,322 |
Source: FlyerIntel analysis of US DOT BTS data · July 2023 – July 2026
Why UA1794 runs late
Where US DOT attributed the delay minutes on this flight.
the inbound aircraft was late, so this flight started late
crew, maintenance, boarding and fueling, all within the carrier’s control
airspace and airport capacity, including weather-driven flow control
weather severe enough to stop this flight specifically
Share of the delay minutes US DOT attributed to each cause for UA1794 on IAH → MEM. Only delays of 15 minutes or more are attributed.
Source: US DOT Bureau of Transportation Statistics · Data covering July 2023 – July 2026
Does a late aircraft delay this flight?
How often the plane that flies UA1794 comes in late, and what that does to the departure.
When the aircraft came in 15 or more minutes late, UA1794 pushed back an average of 49 minutes late; when it came in on time or early, an average of 6 minutes late.
Each departure is matched to the flight the same aircraft flew into IAH just before it, using the tail number in the DOT file, 794 of 1,022 departures in all. A departure is left out when that flight is unknown, was cancelled or diverted, or the aircraft had sat for more than 12 hours. A flight the airline cancelled never left and is not in the count, and one flown by a substitute aircraft is matched to the aircraft that flew it, not to the one first planned.
Against the network at the same turn length
| Share of departures | Inbound landed 15+ late | Left 15+ late after a late inbound | Left 15+ late after an on-time inbound |
|---|---|---|---|
| UA1794 | 27% | 66% | 20% |
| Network, same turn | 17% | 68% | 9% |
The schedule leaves a normal turn: enough time to clean and board if the aircraft is on time, little to spare if it is not.
The network row is every flight with a scheduled turn of 60 to 89 minutes. How often UA1794’s aircraft landed 15 or more minutes late is higher than the network’s and, once the aircraft was late, how often UA1794 left 15 or more minutes late is about the same as the network’s.
More: Which Flight Numbers Pay for a Late Aircraft lists the flight numbers that pass a late aircraft on.
Source: US DOT Bureau of Transportation Statistics · Data covering July 2023 – July 2026
From pushback to gate
When it leaves IAH late, does that still matter by the time it reaches MEM?
UA1794 pushes back an average of 20.4 minutes late and reaches the gate at MEM an average of 14.9 minutes late. The 5.5 minutes between those two figures are slack the published schedule already carries, which is why a late pushback on this flight does not reliably become a late arrival. Its 21.2 minutes on the taxiways at IAH is about what any departure from the airport in that hour spends.
On arrival at MEM, UA1794 spends 6.7 min taxiing from touchdown to the gate — ground time a connecting passenger sits through before they can even leave the aircraft, on top of however late the flight itself ran. That is about what any arrival at MEM spends on the ground before reaching the gate.
Departure delay is averaged over every pushback and arrival delay over every completed arrival, so the two counts differ by the flights that never reached MEM. Taxi-out is gate to wheels up and sits inside the scheduled block rather than on top of it; the comparison is 34,354 departures from IAH scheduled in the clock hour UA1794 most often leaves in. Taxi-in is landing to gate, compared against every arrival FlyerIntel has on file at MEM (72,783 flights), not just UA1794’s own. More on taxi time.
Source: FlyerIntel analysis of US DOT BTS data · July 2023 – July 2026
The hour it leaves IAH
Part of any flight’s record belongs to the clock rather than to the flight. UA1794 has one departure time, so this is what that time is worth.
On-time arrival rate. 34,354 departures from IAH are scheduled in the 8 PM–9 PM hour over the period, against 359,450 across the whole day.
UA1794 is scheduled out of IAH at 8:10 PM, in the 8 PM–9 PM bank. Departures from IAH in that hour arrive on time 71.5% of the time against 77.4% across the airport’s whole day — the slot alone is worth 5.9 points worse before anything about this particular flight is considered.
The two airport figures cover every departure from IAH to every destination, so they describe the slot rather than this journey — the like-for-like comparison against the route is above. Hours are scheduled local, and a number whose schedule moved between banks inside the period has no single hour and is not described here at all. Why the hour matters.
Source: FlyerIntel analysis of US DOT BTS data · July 2023 – July 2026 · Hours below 120 departures are not scored.
By day of week
Does UA1794 run worse on particular days?
Wednesday is historically the most reliable day and Sunday the least, a gap of 28.1 percentage points.
Source: FlyerIntel analysis of US DOT BTS data · July 2023 – July 2026 · Days with fewer than 120 operations are not scored.
Other routes UA1794 has flown
A flight number is a slot in a schedule, and carriers reassign it. These are the other city pairs this number served in the analysis period.
| Route | Operated | Flights | On time |
|---|---|---|---|
| LGA→IAH New York to Houston | March 5, 2026 – July 31, 2026 | 128 | 60.8% |
| PDX→IAH Portland to Houston | May 22, 2025 – March 4, 2026 | 231 | 76.6% |
| MCO→IAH Orlando to Houston | December 18, 2025 – January 5, 2026 | 19 | — |
| ORD→PDX Chicago to Portland | September 25, 2025 – October 23, 2025 | 9 | — |
| MSY→IAH New Orleans to Houston | February 13, 2025 – March 5, 2025 | 21 | — |
| LAS→IAH Las Vegas to Houston | February 12, 2025 | 1 | — |
| ORD→IAH Chicago to Houston | February 15, 2024 – December 2, 2024 | 82 | — |
| SMF→IAH Sacramento to Houston | May 2, 2024 – August 18, 2024 | 70 | — |
| LAX→ORD Los Angeles to Chicago | March 7–30, 2024 | 24 | — |
| SAN→ORD San Diego to Chicago | February 15, 2024 – March 6, 2024 | 21 | — |
| LAX→IAH Los Angeles to Houston | October 29, 2023 – November 27, 2023 | 30 | — |
| SEA→IAH Seattle to Houston | September 29, 2023 – October 28, 2023 | 30 | — |
Because the same number has served different journeys, the statistics above describe only the route UA1794 currently operates. Blending them would produce an average of two different flights.
When it goes wrong
The average describes a usual day. This is the day that ruins a connection.
58 min late
against a median of 1 min late
Percentiles over 1,038 operations; cancelled and diverted flights are counted separately.
Source: US DOT Bureau of Transportation Statistics · Data covering July 2023 – July 2026
Data and methodology
Calculated by FlyerIntel from 1,038 records of UA1794 operating IAH → MEM, published by the US DOT Bureau of Transportation Statistics. A flight counts as delayed when it arrives 15 or more minutes after schedule. Cancelled and diverted flights are excluded from the on-time rate and reported separately. Flight numbers are resolved as carrier plus number plus route, because the same number serves different routes over time.
Full methodology · Data sources · Report a problem
Related research: Most and Least Reliable Flight Numbers · The Delay You Inherit · Making Up Time in the Air
Analysis last recomputed