Flight profile · United Airlines

UA740

Houston (IAH) to Portland (PDX) · scheduled 9:30 AM – 11:56 AM

This page describes how UA740 has historically performed, which is a different and more useful question when you are deciding what to book. The live position below is a reading from receivers on the ground, not flight status. For today’s status, check with United Airlines.

How UA740 performs

864 operations, December 2023 – July 2026.

On-time arrivals
84.8%
728 of 858 completed
Cancellation rate
0.58%
5 cancelled
Median arrival delay
-8 min
Average 2.0 min
Severe delays
5.6%
Arrived 60+ minutes late
Delay when late
77 min
Average, when 15+ min late
Departure punctuality
83.5%
Left the gate on time

UA740 arrived on time 84.8% of the time, against 79.3% for all IAH → PDX flights, so this departure is 5.5 percentage points better than the route as a whole. Against United Airlines’ own flights on this route it is 5.3 points better.

Source: US DOT Bureau of Transportation Statistics · 864 operations, December 2023 – July 2026 · If UA740 is cancelled or significantly changed, DOT’s automatic refund rule may entitle you to your money back. The refund checker walks through eligibility.

Where UA740 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 UA740 right now, if receivers on the ground are hearing it. Nothing is requested until you press the button.

Against the rest of the route

Against the rest of the route
Flight or routeOn timeCancelledMedian delaySevereFlights
UA74084.8%0.58%-8 min5.6%864
United Airlines on IAH → PDX79.5%0.78%-6 min7.3%2,696
All IAH → PDX flights79.3%0.80%-6 min7.2%3,127

Source: FlyerIntel analysis of US DOT BTS data · December 2023 – July 2026

Why UA740 runs late

Where US DOT attributed the delay minutes on this flight.

Share of the delay minutes US DOT attributed to each cause for UA740 on IAH → PDX. Only delays of 15 minutes or more are attributed.

Source: US DOT Bureau of Transportation Statistics · Data covering December 2023 – July 2026

Does a late aircraft delay this flight?

How often the plane that flies UA740 comes in late, and what that does to the departure.

Inbound aircraft late
11%
64 of 579 departures came in 15+ minutes late
Scheduled time on the ground
70 minutes
Median at IAH between the inbound and this departure

The aircraft flying UA740 came in 15 or more minutes late on 11% of the departures where its previous flight is known. There are not enough departures in both groups to say how the flight left after a late one and after an on-time one.

Each departure is matched to the flight the same aircraft flew into IAH just before it, using the tail number in the DOT file, 579 of 859 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

UA740 against all flights with a scheduled turn of 60 to 89 minutes
Share of departuresInbound landed 15+ late
UA74011%
Network, same turn17%

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 UA740’s aircraft landed 15 or more minutes late is lower than the network’s. There are not enough departures in both groups to compare how it left.

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 December 2023 – July 2026

From pushback to gate

When it leaves IAH late, does that still matter by the time it reaches PDX?

Leaves the gate
10.7 minutes late
Average over 859 pushbacks
Taxi out at IAH
21.5 min
21.4 min for the airport in this hour
Taxi in at PDX
4.0 min
5.1 min for a typical PDX arrival
Reaches the gate at PDX
2.0 minutes late
Average over 858 arrivals

UA740 pushes back an average of 10.7 minutes late and reaches the gate at PDX an average of 2.0 minutes late. The 8.7 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 21.5 minutes on the taxiways at IAH is about what any departure from the airport in that hour spends.

On arrival at PDX, UA740 spends 4.0 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 1.1 minutes shorter than a typical PDX arrival (5.1 min).

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 PDX. Taxi-out is gate to wheels up and sits inside the scheduled block rather than on top of it; the comparison is 27,050 departures from IAH scheduled in the clock hour UA740 most often leaves in. Taxi-in is landing to gate, compared against every arrival FlyerIntel has on file at PDX (187,629 flights), not just UA740’s own. More on taxi time.

Source: FlyerIntel analysis of US DOT BTS data · December 2023 – July 2026

The hour it leaves IAH

Part of any flight’s record belongs to the clock rather than to the flight. UA740 has one departure time, so this is what that time is worth.

UA74084.8%
All IAH departures, 9 AM–10 AM82.7%
All IAH departures, whole day77.4%

On-time arrival rate. 27,050 departures from IAH are scheduled in the 9 AM–10 AM hour over the period, against 359,450 across the whole day.

UA740 is scheduled out of IAH at 9:30 AM, in the 9 AM–10 AM bank. Departures from IAH in that hour arrive on time 82.7% of the time against 77.4% across the airport’s whole day — the slot alone is worth 5.3 points better 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 · December 2023 – July 2026 · Hours below 120 departures are not scored.

By day of week

Does UA740 run worse on particular days?

Monday87.0%
Tuesday86.0%
Wednesday81.3%
Thursday87.7%
Friday79.8%
Saturday82.9%
Sunday89.3%

Sunday is historically the most reliable day and Friday the least, a gap of 9.5 percentage points.

Source: FlyerIntel analysis of US DOT BTS data · December 2023 – July 2026 · Days with fewer than 120 operations are not scored.

Other routes UA740 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.

Other routes UA740 has flown
RouteOperatedFlightsOn time
MCI→IAH Kansas City to HoustonMarch 6, 2025 – July 31, 202613590.4%
SAT→IAH San Antonio to HoustonMay 21–31, 202611—
RSW→IAH Fort Myers to HoustonFebruary 12, 2026 – March 4, 202621—
MIA→IAH Miami to HoustonDecember 18, 2025 – February 9, 202643—
ORD→IAH Chicago to HoustonDecember 2–17, 202514—
IAD→IAH Washington to HoustonOctober 26, 2025 – December 1, 202536—
MEM→IAH Memphis to HoustonMay 23, 2024 – October 25, 202560—
PDX→ORD Portland to ChicagoAugust 19, 2025 – September 24, 202537—
OMA→IAH Omaha to HoustonJune 26, 2025 – August 18, 202554—
PDX→SFO Portland to San FranciscoAugust 1–18, 202518—
MAF→IAH Midland to HoustonDecember 4, 2024 – June 25, 202567—
PNS→IAH Pensacola to HoustonFebruary 13, 2025 – March 5, 202521—
ATL→SFO Atlanta to San FranciscoDecember 3, 20241—
FLL→IAH Fort Lauderdale to HoustonOctober 27, 2024 – December 2, 202436—
TUL→IAH Tulsa to HoustonSeptember 26, 2024 – October 26, 202431—
GSP→IAH Greenville/Greer/Spartanburg to HoustonJune 27, 2024 – August 18, 202453—
RDU→IAH Raleigh–Durham to HoustonFebruary 15, 2024 – May 22, 20249892.6%
CMH→ORD Columbus to ChicagoNovember 28, 2023 – December 20, 202321—
IAH→MAF Houston to MidlandOctober 30, 2023 – November 27, 202320—
DRO→DEN Durango to DenverNovember 26, 20231—
BNA→IAH Nashville to HoustonJuly 1, 2023 – October 28, 202311790.4%
BHM→IAH Birmingham to HoustonSeptember 9, 20231—

Because the same number has served different journeys, the statistics above describe only the route UA740 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.

One arrival in ten is worse than

28 min late

against a median of 8 min early

Arrived an hour or more late5.6%
Typical delay when late77 min
Cancelled0.58%
Landed somewhere else0.12%

Percentiles over 864 operations; cancelled and diverted flights are counted separately.

Source: US DOT Bureau of Transportation Statistics · Data covering December 2023 – July 2026

Data and methodology

Calculated by FlyerIntel from 864 records of UA740 operating IAH → PDX, 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

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