Flight number record

UA 1794

United Airlines · Houston to Memphis

Route: IAH → MEM
Departs: 20:05
Flights: 339
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 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, 6 points worse than the national rate of 77.6%. The late ones land about an hour behind schedule. That rests on 339 flights, with a median arrival 3 minutes early.

The national on-time rate over the same period is 77.6%, so UA 1794 runs 6 points behind the country as a whole. Across a thousand flights that is about 60 extra late arrivals.

On time

71.6%

Arrivals under 15 minutes late, of 334 completed flights

Avg delay

58 min

Across delayed arrivals only, not all flights

Cancelled

1.47%

National rate is 1.81%

1 hour+ late

6.6%

National rate is 8.1%

These figures cover 339 flights between July 2025 and June 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.

Schedule

When UA 1794 flies

UA 1794 flies IAH to MEM without a single fixed slot. Its most common scheduled departure was 20:05, used on 71 of 339 flights, with 20:28 (41 flights) and 20:21 (41 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 20:0571 flights20.9%
Departs 20:2841 flights12.1%
Departs 20:2141 flights12.1%

Scale runs 0% to 100%. Rows with fewer than 30 flights show a dash.

Share of scheduled departures at each local time. Times used on fewer than one flight in ten are not listed.

A 20:05 departure sits in the 8pm–5am window. Across every US flight scheduled in that window the on-time rate is 70.5%, and UA 1794 runs level with that at 71.6%. By that time of day most aircraft have flown several legs already, and whatever went wrong earlier is still in the schedule.

Against the route

UA 1794 next to IAH to MEM

Every carrier on IAH to MEM combined arrived on time 79.5% of the time across 1,084 flights, so UA 1794 is 8 points behind it. Across its whole network United Airlines managed 79.0%, which this flight trails by 7 points.

UA 1794 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
UA 1794thin sample	339	71.6%	58 min	1.47%	C
All United Airlines on IAH–MEMthin sample	359	71.5%	57 min	1.39%	C
All carriers on IAH–MEM	1,084	79.5%	63 min	1.01%	B
United Airlines, whole network	821,041	79.0%	72 min	1.01%	B

Across the year

UA 1794 quarter by quarter

UA 1794 did not run the same all year. Its best quarter was Apr–Jun 2026 at 75.6% on time and its weakest Oct–Dec 2025 at 60.8%, a swing of 15 points on roughly 85 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 202584 flights74.7%
Oct–Dec 202574 flights60.8%
Jan–Mar 202690 flights73.6%
Apr–Jun 202691 flights75.6%

Scale runs 50% to 80%. Rows with fewer than 30 flights show a dash.

By weekday, UA 1794 did best on Wednesday at 83.3% on time and worst on Monday at 61.2%. Each day rests on about 48 flights, so a gap of 22 points is worth noticing but could still narrow in another year.

Delay causes

Why UA 1794 runs late

One category carries most of the weight here. Late-arriving aircraft accounts for 50% of the 5,544 delay minutes carriers reported, and the remaining four split what is left. The split is by minutes rather than by flights, so a few very long delays count for as much as many short ones.

Late-arriving aircraft
50%
Carrier
37%
National Airspace System
9%
Extreme weather
4%

50% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. That is a cascade, and cascades start small and grow through the day. Across 5,544 reported delay minutes here, that single category outweighs weather by 11 to one. It is the strongest argument for booking the first departure of the morning, when the aircraft has been sitting at the gate overnight with nothing to inherit. The split is drawn from 5,544 delay minutes reported on UA 1794.

Cancellations sit at 1.47% against a national 1.81%, which is ordinary. Diversions add another 0.00%.

Connections and routes

What a delay on this flight costs

6.6% of arrivals land an hour or more late, close to the national 8.1%. That is the figure that decides a connection, and it says a 60 to 75 minute layover is reasonable here while anything under 45 minutes is a bet. Most delays on this route last about an hour, which a normal layover absorbs.

The same number turns up on four other city pairs in the data, including PDX to IAH (191), LGA to IAH (101) 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. 339 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.

Where to go next

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, July 2025 to June 2026. Last updated 15 September 2026; recomputed monthly. How this data is collected.

Key figures