Flight number record
AA 1523
American Airlines · Denver to Dallas-Fort Worth
- Route
- DEN → DFW
- Departs
- 09:10
- Flights
- 307
- Period
- July 2025 to June 2026
Historical statistics for July 2025 to June 2026, not live status. For today’s AA 1523, check with American Airlines.
AA 1523 lands a B, 4 points better than the national rate of 77.6%. About one flight in five arrives 15 minutes late or worse, and those flights are late by close to two hours on average. That is a workable record, not a spotless one. That rests on 307 flights, with a median arrival 11 minutes early.
Key figures
On time
81.4%
Arrivals under 15 minutes late, of 296 completed flights
Avg delay
121 min
Across delayed arrivals only, not all flights
Cancelled
2.93%
National rate is 1.81%
1 hour+ late
9.5%
National rate is 8.1%
These figures cover 307 flights between July 2025 and June 2026. Beyond the headline rate, 9.5% 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 1523 flies
AA 1523 flies DEN to DFW without a single fixed slot. Its most common scheduled departure was 09:10, used on 54 of 307 flights, with 09:18 (44 flights) and 09:11 (40 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.
- Departs 09:1054 flights17.6%
- Departs 09:1844 flights14.3%
- Departs 09:1140 flights13.0%
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 09:10 departure sits in the 8am–11am window. Across every US flight scheduled in that window the on-time rate is 84.1%, and AA 1523 runs 3 points worse at 81.4%. 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
AA 1523 next to DEN to DFW
Every carrier on DEN to DFW combined arrived on time 75.0% of the time across 6,029 flights, so AA 1523 is 6 points ahead of it. American flew 2,955 flights on the same city pair under all its flight numbers, including this one, and those ran 73.3% on time. Across its whole network American Airlines managed 74.4%, which this flight beats by 7 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| AA 1523thin sample | 307 | 81.4% | 121 min | 2.93% | B |
| All American Airlines on DEN–DFW | 2,955 | 73.3% | 100 min | 3.42% | C− |
| All carriers on DEN–DFW | 6,029 | 75.0% | 85 min | 2.07% | B |
| American Airlines, whole network | 986,297 | 74.4% | 85 min | 2.29% | C |
Across the year
AA 1523 quarter by quarter
AA 1523 did not run the same all year. Its best quarter was Jul–Sep 2025 at 84.6% on time and its weakest Oct–Dec 2025 at 72.1%, a swing of 13 points on roughly 77 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 202566 flights84.6%
- Oct–Dec 202561 flights72.1%
- Jan–Mar 202689 flights84.3%
- Apr–Jun 202691 flights82.8%
Scale runs 65% to 90%. Rows with fewer than 30 flights show a dash.
By weekday, AA 1523 did best on Thursday at 88.4% on time and worst on Friday at 74.5%. Each day rests on about 44 flights, so a gap of 14 points is worth noticing but could still narrow in another year.
Delay causes
Why AA 1523 runs late
One category carries most of the weight here. Carrier accounts for 52% of the 6,644 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.
- 52%Carrier
- 33%Late-arriving aircraft
- 15%National Airspace System
- 1%Extreme weather
The largest share of delay minutes, 52%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. Unlike weather, that is a management outcome, and it is the category where the gap between two carriers on the same schedule is genuinely earned. It accounts for 3,426 of the 6,644 delay minutes reported here. The split is drawn from 6,644 delay minutes reported on AA 1523.
Cancellations run at 2.93%, against 1.81% nationally. That is roughly one flight in 30 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. 9.5% 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 641 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.
AA 1523 is not only a DEN to DFW flight. It also flew DFW to DEN (272 flights, 78.5% on time) often enough to be scored on its own. Airlines attach one number to several legs of an aircraft's day, and each leg keeps its own record here, so check which city pair is on your booking before reading a rate.
One caution: this is a thin sample. 307 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.
| Also flown as | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| DFW to DENthin sample | 272 | 78.5% | 45 min | 0.37% | B+ |
What to do with this
Booking AA 1523
For a booking, the cancellation rate is the figure to plan around on AA 1523: 2.93% of its 307 scheduled flights did not operate. A late arrival costs close to two hours, but a cancellation costs the day, so leave a later option open.
Related
Where to go next
- DEN to DFW, every carrier and departure
- DFW to DEN, the return direction
- American Airlines 420 on the same route68.9%
- United Airlines 1350 on the same route84.5%
- United Airlines 1565 on the same route66.6%
- American Airlines 1832 on the same route57.7%
- Frontier Airlines 1324 on the same route89.6%
- American Airlines 852 on the same route77.6%
- Denver International (DEN) delay statistics
- Dallas/Fort Worth International (DFW) 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.