Flight number record

UA 1647

United Airlines · Houston to New Orleans

Route: IAH → MSY
Departs: 14:50
Flights: 298
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s UA 1647, check with United Airlines.

UA 1647 lands a B+, 5 points better than the national rate of 77.6%. About one flight in six arrives 15 minutes late or worse, and those flights are late by about an hour on average. That is a workable record, not a spotless one. That rests on 298 flights, with a median arrival 9 minutes early.

Set against the rest of the country, UA 1647's record is 5 points better than the US average of 77.6%. That gap is worth roughly 45 fewer late arrivals for every thousand flights.

On time

82.1%

Arrivals under 15 minutes late, of 296 completed flights

Avg delay

58 min

Across delayed arrivals only, not all flights

Cancelled

0.67%

National rate is 1.81%

1 hour+ late

6.4%

National rate is 8.1%

These figures cover 298 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 1647 flies

UA 1647 flies IAH to MSY without a single fixed slot. Its most common scheduled departure was 14:50, used on 86 of 298 flights, with 14:55 (80 flights) and 15:21 (58 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 14:5086 flights28.9%
Departs 14:5580 flights26.8%
Departs 15:2158 flights19.5%

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 14:50 departure sits in the 2pm–5pm window. Across every US flight scheduled in that window the on-time rate is 72.4%, and UA 1647 runs 10 points better at 82.1%. Midday slots inherit some of the morning's delays without yet carrying the full weight of the evening's.

Against the route

UA 1647 next to IAH to MSY

Every carrier on IAH to MSY combined arrived on time 82.9% of the time across 2,962 flights, so UA 1647 is about level with it. United flew 2,783 flights on the same city pair under all its flight numbers, including this one, and those ran 82.9% on time. Across its whole network United Airlines managed 79.0%, which this flight beats by 3 points.

UA 1647 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
UA 1647thin sample	298	82.1%	58 min	0.67%	B+
All United Airlines on IAH–MSY	2,783	82.9%	63 min	0.25%	B+
All carriers on IAH–MSY	2,962	82.9%	65 min	0.30%	B+
United Airlines, whole network	821,041	79.0%	72 min	1.01%	B

Across the year

UA 1647 quarter by quarter

Quarter by quarter UA 1647 held fairly steady: 75.6% in Jul–Sep 2025, 82.2% in Oct–Dec 2025 and 85.1% in Jan–Mar 2026. A spread of 10 points is about what a sample of this size moves on its own, so the annual figure is a fair summary.

Jul–Sep 202591 flights75.6%
Oct–Dec 202590 flights82.2%
Jan–Mar 202688 flights85.1%
Apr–Jun 202629 flights—

Scale runs 65% to 90%. Rows with fewer than 30 flights show a dash.

By weekday, UA 1647 did best on Saturday at 92.7% on time and worst on Sunday at 69.0%. Each day rests on about 43 flights, so a gap of 24 points is worth noticing but could still narrow in another year.

Delay causes

Why UA 1647 runs late

One category carries most of the weight here. Carrier accounts for 45% of the 3,058 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.

Carrier
45%
Late-arriving aircraft
40%
Extreme weather
12%
National Airspace System
4%

Extreme weather accounts for 12% 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 1.9 times the usual weather exposure. The split is drawn from 3,058 delay minutes reported on UA 1647.

Cancellations are rare at 0.67%, below the national 1.81% and low enough to earn the plus on the grade. Roughly one flight in 100 is called off; the risk here is arriving late, not not arriving.

Connections and routes

What a delay on this flight costs

6.4% 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 two other city pairs in the data, including BOS to EWR (34) and SEA to IAH (21), but none flew often enough under UA 1647 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to IAH to MSY only.

One caution: this is a thin sample. 298 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 1647

For a booking, read UA 1647 as 82.1% on time with 0.67% cancelled over 298 flights. Those are rates from the past twelve months, not a forecast for any particular 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