Flight number record
AA 3144
American Airlines · Chicago to Houston
- Route
- ORD → IAH
- Departs
- 20:59
- Flights
- 272
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 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 52.5% of flights arrive inside the 15-minute window, 25 points worse than the national rate of 77.3%. Late arrivals average a little over an hour. Treat any tight connection here as a coin flip. That rests on 272 flights, with a median arrival 11 minutes late.
The national on-time rate over the same period is 77.3%, so AA 3144 runs 25 points behind the country as a whole. Across a thousand flights that is about 248 extra late arrivals.
Key figures
On time
52.5%
Arrivals under 15 minutes late, of 259 completed flights
Avg delay
78 min
Across delayed arrivals only, not all flights
Cancelled
4.78%
National rate is 1.89%
1 hour+ late
21.6%
National rate is 8.3%
These figures cover 272 flights between September 2025 and August 2026. Beyond the headline rate, 21.6% of arrivals land a full hour or more behind schedule, against 8.3% nationally.
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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 272 flights, with 21:07 (43 flights) and 20:35 (28 flights) next.
- Departs 20:5954 flights19.9%
- Departs 21:0743 flights15.8%
- Departs 20:3528 flights10.3%
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 20:59 departure sits in the 8pm–5am window. Across every US flight scheduled in that window the on-time rate is 70.1%, and AA 3144 runs 18 points worse at 52.5%. By that time of day most aircraft have flown several legs already, and whatever went wrong earlier is still in the schedule.
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Against the route
AA 3144 next to ORD to IAH
Every carrier on ORD to IAH combined arrived on time 76.0% of the time across 6,141 flights, so AA 3144 is 24 points behind it. American flew 882 flights on the same city pair under all its flight numbers, including this one, and those ran 59.8% on time. Across its whole network American Airlines managed 74.7%, which this flight trails by 22 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| AA 3144thin sample | 272 | 52.5% | 78 min | 4.78% | F− |
| All American Airlines on ORD–IAH | 882 | 59.8% | 81 min | 3.06% | D− |
| All carriers on ORD–IAH | 6,141 | 76.0% | 74 min | 1.40% | B |
| American Airlines, whole network | 988,892 | 74.7% | 85 min | 2.14% | 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 2026 at 37.7%, a swing of 21 points on roughly 54 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 202530 flights56.7%
- Oct–Dec 202580 flights58.4%
- Jan–Mar 202653 flights57.1%
- Apr–Jun 202647 flights54.8%
- Jul–Sep 202662 flights37.7%
Scale runs 30% to 65%.
By weekday, AA 3144 did best on Tuesday at 75.0% on time and worst on Friday at 41.0%. Each day rests on about 39 flights, so a gap of 34 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late AA 3144 runs when it is late
The 123 late arrivals split 28 under half an hour, 39 between 30 and 60 minutes, and 56 an hour or more.
- 15+ min early59 flights22.8%
- Within 15 min77 flights29.7%
- 15–29 min late28 flights10.8%
- 30–59 min late39 flights15.1%
- 1–2 hours late40 flights15.4%
- 2+ hours late16 flights6.2%
Scale runs 0% to 100%.
Share of 259 completed flights by arrival against schedule.
26 of 144 late departures made up the time and arrived on time, 18% of them. Only 5 left on time and still arrived late.
The worst days
Worst days for AA 3144
The latest arrival of the period was on 6 November 2025, 11 hours 58 minutes behind schedule; most of its delay minutes were filed as carrier-caused (crew, maintenance, fuelling, baggage). The same cause led on three of the five worst days.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 6 November 2025 | 11 hours 58 minutes | Carrier |
| 30 December 2025 | 7 hours 51 minutes | Carrier |
| 28 December 2025 | 5 hours 8 minutes | Late-arriving aircraft |
| 9 August 2026 | 3 hours 50 minutes | Late-arriving aircraft |
| 3 July 2026 | 3 hours 30 minutes | Carrier |
Delay causes
Why AA 3144 runs late
Late-arriving aircraft accounts for 50% of the 9,542 delay minutes carriers reported here, and the remaining four split what is left.
- 50%Late-arriving aircraft
- 38%Carrier
- 10%National Airspace System
- 2%Extreme weather
- 0%Security
50% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 9,542 reported delay minutes here, that single category outweighs weather by 21 to one. The split is drawn from 9,542 delay minutes reported on AA 3144.
Cancellations run at 4.78%, against 1.89% nationally. That is about 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
21.6% of arrivals land a full hour or more behind schedule, against 8.3% nationally. Ninety minutes is the honest minimum for a connection 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.
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. 272 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: 4.78% of its 272 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
- Frontier Airlines 3135 on the same route78.6%
- United Airlines 1231 on the same route91.4%
- United Airlines 2638 on the same route86.0%
- United Airlines 2426 on the same route72.3%
- 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, September 2025 to August 2026. Last updated ; recomputed monthly. How this data is collected.