Flight number record
AA 3144
American Airlines · Chicago to Houston
- Route
- ORD → IAH
- Departs
- 20:59
- Flights
- 271
- Period
- July 2025 to June 2026
Historical statistics for July 2025 to June 2026, not live status. For today’s AA 3144, check with American Airlines.
AA 3144 earns an F−, which is as low as this site's scale goes for a reason. Only 53.5% of flights arrive inside the 15-minute window, 24 points worse than the national rate of 77.6%. Late arrivals average a little over an hour. Treat any tight connection here as a coin flip. That rests on 271 flights, with a median arrival 9 minutes late.
The national on-time rate over the same period is 77.6%, so AA 3144 runs 24 points behind the country as a whole. Across a thousand flights that is about 241 extra late arrivals.
Key figures
On time
53.5%
Arrivals under 15 minutes late, of 256 completed flights
Avg delay
76 min
Across delayed arrivals only, not all flights
Cancelled
5.54%
National rate is 1.81%
1 hour+ late
17.6%
National rate is 8.1%
These figures cover 271 flights between July 2025 and June 2026. Beyond the headline rate, 17.6% of arrivals land a full hour or more behind schedule. That is the number that wrecks a connection, and it is not visible in an on-time percentage alone.
Schedule
When AA 3144 flies
AA 3144 flies ORD to IAH without a single fixed slot. Its most common scheduled departure was 20:59, used on 54 of 271 flights, with 20:22 (37 flights) and 20:35 (29 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.
- Departs 20:5954 flights19.9%
- Departs 20:2237 flights13.7%
- Departs 20:3529 flights10.7%
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 20:59 departure sits in the 8pm–5am window. Across every US flight scheduled in that window the on-time rate is 70.5%, and AA 3144 runs 17 points worse at 53.5%. 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
AA 3144 next to ORD to IAH
Every carrier on ORD to IAH combined arrived on time 75.0% of the time across 6,077 flights, so AA 3144 is 22 points behind it. American flew 798 flights on the same city pair under all its flight numbers, including this one, and those ran 60.6% on time. Across its whole network American Airlines managed 74.4%, which this flight trails by 21 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| AA 3144thin sample | 271 | 53.5% | 76 min | 5.54% | F− |
| All American Airlines on ORD–IAH | 798 | 60.6% | 84 min | 3.01% | D− |
| All carriers on ORD–IAH | 6,077 | 75.0% | 74 min | 1.43% | B |
| American Airlines, whole network | 986,297 | 74.4% | 85 min | 2.29% | C |
Across the year
AA 3144 quarter by quarter
AA 3144 did not run the same all year. Its best quarter was Oct–Dec 2025 at 58.4% on time and its weakest Jul–Sep 2025 at 46.6%, a swing of 12 points on roughly 68 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 202591 flights46.6%
- Oct–Dec 202580 flights58.4%
- Jan–Mar 202653 flights57.1%
- Apr–Jun 202647 flights54.8%
Scale runs 40% to 65%. Rows with fewer than 30 flights show a dash.
By weekday, AA 3144 did best on Tuesday at 78.8% on time and worst on Friday at 36.8%. Each day rests on about 39 flights, so a gap of 42 points is worth noticing but could still narrow in another year.
Delay causes
Why AA 3144 runs late
One category carries most of the weight here. Late-arriving aircraft accounts for 48% of the 9,051 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.
- 48%Late-arriving aircraft
- 41%Carrier
- 7%National Airspace System
- 3%Extreme weather
- 0%Security
48% 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 9,051 reported delay minutes here, that single category outweighs weather by 15 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 9,051 delay minutes reported on AA 3144.
Cancellations run at 5.54%, against 1.81% nationally. That is roughly one flight in twenty cancelled outright. A cancelled flight is invisible in every on-time figure on this page, so the punctuality numbers above describe only the flights that actually operated.
Connections and routes
What a delay on this flight costs
For anyone connecting, the number to weigh is not the on-time rate but the tail behind it. 17.6% of arrivals land a full hour or more behind schedule, against 8.1% nationally. A 45-minute layover does not survive that, and no amount of walking quickly changes it. Ninety minutes is the honest minimum here, and two hours if the onward flight is on a separate ticket.
The 925 miles between these two airports put this in the middle of the US network, around two and a half to three hours of block time. That is enough cruise to absorb a ten-minute late pushback and not enough to absorb thirty. It is also long enough that the aircraft usually flies three or four legs a day rather than six, which slows how fast delay compounds.
The same number turns up on two other city pairs in the data, including PHX to DEN (37) and LAX to IND (37), but none flew often enough under AA 3144 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to ORD to IAH only.
One caution: this is a thin sample. 271 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 AA 3144
For a booking, the cancellation rate is the figure to plan around on AA 3144: 5.54% of its 271 scheduled flights did not operate. A late arrival costs a little over an hour, but a cancellation costs the day, so leave a later option open.
Related
Where to go next
- ORD to IAH, every carrier and departure
- IAH to ORD, the return direction
- United Airlines 2426 on the same route66.5%
- Chicago O'Hare International (ORD) delay statistics
- George Bush Intercontinental (IAH) delay statistics
- American Airlines on-time record
- Every American 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 American 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.