Flight number record

UA 740

United Airlines · Houston to Portland

Route: IAH → PDX
Departs: 09:30
Flights: 365
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 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 9 points better than the national rate of 77.6%. 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 9 points better than the US average of 77.6%. That gap is worth roughly 87 fewer late arrivals for every thousand flights.

On time

86.3%

Arrivals under 15 minutes late, of 364 completed flights

Avg delay

82 min

Across delayed arrivals only, not all flights

Cancelled

0.00%

National rate is 1.81%

1 hour+ late

5.8%

National rate is 8.1%

These figures cover 365 flights between July 2025 and June 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.

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 232 of 365 flights. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 09:30232 flights63.6%

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 09:30 departure sits in the 8am–11am window. Across every US flight scheduled in that window the on-time rate is 84.1%, and UA 740 runs 2 points better at 86.3%. Early departures usually start with an aircraft that has not flown yet that day, which is most of why the window does well.

Against the route

UA 740 next to IAH to PDX

Every carrier on IAH to PDX combined arrived on time 81.1% of the time across 1,233 flights, so UA 740 is 5 points ahead of it. United flew 880 flights on the same city pair under all its flight numbers, including this one, and those ran 82.0% on time. Across its whole network United Airlines managed 79.0%, which this flight beats by 7 points.

UA 740 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
UA 740	365	86.3%	82 min	0.00%	A+
All United Airlines on IAH–PDX	880	82.0%	68 min	0.57%	B+
All carriers on IAH–PDX	1,233	81.1%	67 min	0.73%	B+
United Airlines, whole network	821,041	79.0%	72 min	1.01%	B

Across the year

UA 740 quarter by quarter

Quarter by quarter UA 740 held fairly steady: 87.0% in Jul–Sep 2025, 87.0% in Oct–Dec 2025, 88.9% in Jan–Mar 2026 and 82.2% in Apr–Jun 2026. A spread of 7 points is about what a sample of this size moves on its own, so the annual figure is a fair summary.

Jul–Sep 202592 flights87.0%
Oct–Dec 202592 flights87.0%
Jan–Mar 202690 flights88.9%
Apr–Jun 202691 flights82.2%

Scale runs 75% to 95%. Rows with fewer than 30 flights show a dash.

By weekday, UA 740 did best on Sunday at 92.3% on time and worst on Friday at 78.8%. Each day rests on about 52 flights, so a gap of 14 points is worth noticing but could still narrow in another year.

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 4,076 reported delay minutes.

Late-arriving aircraft
35%
Carrier
34%
Extreme weather
19%
National Airspace System
12%

Extreme weather accounts for 19% of delay minutes, well above the single-digit share typical across the system. Weather delays are lumpy: they arrive as whole bad days rather than as a steady drag, so the quarterly figures above are the more useful view of the risk. The national share is 6%, so this operation carries roughly 3.1 times the usual weather exposure. The split is drawn from 4,076 delay minutes reported on UA 740.

Cancellations are rare at 0.00%, below the national 1.81% 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 8.1%. 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 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 ten other city pairs in the data, including MCI to IAH (82), OMA to IAH (49) and MIA to IAH (43), 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: 86.3% on time and 0.00% cancelled. That is a base rate, not a promise about any single day.

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