Flight number record
UA 740
United Airlines · Houston to Portland
- Route
- IAH → PDX
- Departs
- 09:30
- Flights
- 365
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s UA 740, check with United Airlines.
UA 740 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 10 points better than the national rate of 77.3%. When something does go wrong the average delay runs a little over an hour. That rests on 365 flights, with a median arrival 9 minutes early.
Set against the rest of the country, UA 740's record is 10 points better than the US average of 77.3%. That gap is worth roughly 95 fewer late arrivals for every thousand flights.
Key figures
On time
86.8%
Arrivals under 15 minutes late, of 364 completed flights
Avg delay
76 min
Across delayed arrivals only, not all flights
Cancelled
0.00%
National rate is 1.89%
1 hour+ late
5.8%
National rate is 8.3%
These figures cover 365 flights between September 2025 and August 2026. The median arrival is 9 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 740 flies
UA 740 flies IAH to PDX without a single fixed slot. Its most common scheduled departure was 09:30, used on 230 of 365 flights.
- Departs 09:30230 flights63.0%
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 09:30 departure sits in the 8am–11am window. Across every US flight scheduled in that window the on-time rate is 83.9%, and UA 740 runs 3 points better at 86.8%. 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 740 next to IAH to PDX
Every carrier on IAH to PDX combined arrived on time 80.9% of the time across 1,209 flights, so UA 740 is 6 points ahead of it. United flew 856 flights on the same city pair under all its flight numbers, including this one, and those ran 82.3% 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 740 | 365 | 86.8% | 76 min | 0.00% | A+ |
| All United Airlines on IAH–PDX | 856 | 82.3% | 62 min | 0.23% | B+ |
| All carriers on IAH–PDX | 1,209 | 80.9% | 62 min | 0.50% | B+ |
| United Airlines, whole network | 830,825 | 78.8% | 73 min | 1.02% | B |
Across the year
UA 740 quarter by quarter
Quarter by quarter UA 740 held fairly steady: 86.7% in Jul–Sep 2025, 87.0% in Oct–Dec 2025, 88.9% in Jan–Mar 2026, 82.2% in Apr–Jun 2026 and 90.3% in Jul–Sep 2026. A spread of 8 points is about what a sample of this size moves on its own, so the annual figure is a fair summary.
- Jul–Sep 202530 flights86.7%
- Oct–Dec 202592 flights87.0%
- Jan–Mar 202690 flights88.9%
- Apr–Jun 202691 flights82.2%
- Jul–Sep 202662 flights90.3%
Scale runs 75% to 95%.
By weekday, UA 740 did best on Sunday at 96.2% on time and worst on Saturday at 82.7%. Each day rests on about 52 flights, so a gap of 14 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late UA 740 runs when it is late
UA 740 often beats the schedule: 126 of 364 completed flights, 35%, arrived 15 minutes or more early. The 48 late arrivals split 14 under half an hour, 13 between 30 and 60 minutes, and 21 an hour or more.
- 15+ min early126 flights34.6%
- Within 15 min190 flights52.2%
- 15–29 min late14 flights3.8%
- 30–59 min late13 flights3.6%
- 1–2 hours late13 flights3.6%
- 2+ hours late8 flights2.2%
Scale runs 0% to 100%.
Share of 364 completed flights by arrival against schedule.
A late pushback is often recovered here: of 60 departures that left 15 minutes late or more, 20 still arrived on time. 8 flights left on time and still arrived late.
The worst days
Worst days for UA 740
The latest arrival of the period was on 24 November 2025, 5 hours 47 minutes behind schedule; most of its delay minutes were filed as extreme weather. The five worst days are spread across November, April, June, January and May, with no single month standing out.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 24 November 2025 | 5 hours 47 minutes | Extreme weather |
| 30 April 2026 | 5 hours 15 minutes | Late-arriving aircraft |
| 16 June 2026 | 5 hours 4 minutes | Carrier |
| 21 January 2026 | 2 hours 58 minutes | Late-arriving aircraft |
| 26 May 2026 | 2 hours 40 minutes | Carrier |
Delay causes
Why UA 740 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 3,663 reported delay minutes.
- 41%Late-arriving aircraft
- 37%Carrier
- 13%National Airspace System
- 9%Extreme weather
41% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 3,663 reported delay minutes here, that single category outweighs weather by 4 to one. The split is drawn from 3,663 delay minutes reported on UA 740.
Cancellations are rare at 0.00%, below the national 1.89% and low enough to earn the plus on the grade. Almost no flights are called off; the risk here is arriving late, not not arriving.
Connections and routes
What a delay on this flight costs
5.8% 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 a little over an hour, which a normal layover absorbs.
At 1,825 miles this is transcontinental flying, and long routes get a quiet structural advantage. Scheduled block time on a flight this length carries more padding in absolute minutes, so a twenty-minute late departure often still becomes an on-time arrival. Read the on-time rate here as slightly flattering next to a short-haul route with the same operational quality.
The same number turns up on eight other city pairs in the data, including MCI to IAH (142), MIA to IAH (43) and IAD to IAH (36), but none flew often enough under UA 740 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to IAH to PDX only.
One caution: this is a thin sample. 365 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 740
For a booking, UA 740 has one of the better records a US domestic flight can show: 86.8% on time and 0.00% cancelled. That is a base rate, not a promise about any single day.
Related
Where to go next
- IAH to PDX, every carrier and departure
- PDX to IAH, the return direction
- Alaska Airlines 1421 on the same route77.5%
- United Airlines 1420 on the same route77.2%
- George Bush Intercontinental (IAH) delay statistics
- Portland International (PDX) 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.