Flight number record
AA 1523
American Airlines · Denver to Dallas-Fort Worth
- Route
- DEN → DFW
- Departs
- 09:10
- Flights
- 333
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s AA 1523, check with American Airlines.
AA 1523 lands a B, 6 points better than the national rate of 77.3%. About one flight in six arrives 15 minutes late or worse, and those flights are late by close to two hours on average. That rests on 333 flights, with a median arrival 10 minutes early.
Set against the rest of the country, AA 1523's record is 6 points better than the US average of 77.3%. That gap is worth roughly 60 fewer late arrivals for every thousand flights.
Key figures
On time
83.3%
Arrivals under 15 minutes late, of 323 completed flights
Avg delay
112 min
Across delayed arrivals only, not all flights
Cancelled
2.40%
National rate is 1.89%
1 hour+ late
7.7%
National rate is 8.3%
These figures cover 333 flights between September 2025 and August 2026. The median arrival is 10 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.
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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 333 flights, with 09:04 (54 flights) and 09:18 (44 flights) next.
- Departs 09:1054 flights16.2%
- Departs 09:0454 flights16.2%
- Departs 09:1844 flights13.2%
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 09:10 departure sits in the 8am–11am window. Across every US flight scheduled in that window the on-time rate is 83.9%, and AA 1523 runs level with that at 83.3%. Early departures usually start with an aircraft that has not flown yet that day, which is most of why the window does well.
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Against the route
AA 1523 next to DEN to DFW
Every carrier on DEN to DFW combined arrived on time 75.8% of the time across 6,063 flights, so AA 1523 is 8 points ahead of it. American flew 2,939 flights on the same city pair under all its flight numbers, including this one, and those ran 74.5% on time. Across its whole network American Airlines managed 74.7%, which this flight beats by 9 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| AA 1523thin sample | 333 | 83.3% | 112 min | 2.40% | B |
| All American Airlines on DEN–DFW | 2,939 | 74.5% | 97 min | 2.96% | C |
| All carriers on DEN–DFW | 6,063 | 75.8% | 83 min | 1.80% | B |
| American Airlines, whole network | 988,892 | 74.7% | 85 min | 2.14% | C |
Across the year
AA 1523 quarter by quarter
AA 1523 did not run the same all year. Its best quarter was Jul–Sep 2026 at 91.9% on time and its weakest Oct–Dec 2025 at 72.1%, a swing of 20 points on roughly 67 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 flights86.7%
- Oct–Dec 202561 flights72.1%
- Jan–Mar 202689 flights84.3%
- Apr–Jun 202691 flights82.8%
- Jul–Sep 202662 flights91.9%
Scale runs 65% to 95%.
By weekday, AA 1523 did best on Thursday at 91.1% on time and worst on Friday at 72.9%. Each day rests on about 48 flights, so a gap of 18 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late AA 1523 runs when it is late
AA 1523 often beats the schedule: 114 of 323 completed flights, 35%, arrived 15 minutes or more early. The 54 late arrivals split 18 under half an hour, 11 between 30 and 60 minutes, and 25 an hour or more.
- 15+ min early114 flights35.3%
- Within 15 min155 flights48.0%
- 15–29 min late18 flights5.6%
- 30–59 min late11 flights3.4%
- 1–2 hours late9 flights2.8%
- 2+ hours late16 flights5.0%
Scale runs 0% to 100%.
Share of 323 completed flights by arrival against schedule.
13 of 60 late departures made up the time and arrived on time, 22% of them. 7 flights left on time and still arrived late.
The worst days
Worst days for AA 1523
The latest arrival of the period was on 6 November 2025, 9 hours 35 minutes behind schedule; most of its delay minutes were filed as carrier-caused (crew, maintenance, fuelling, baggage). Three of the five worst days fell in November 2025.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 6 November 2025 | 9 hours 35 minutes | Carrier |
| 8 December 2025 | 8 hours 39 minutes | Carrier |
| 21 November 2025 | 7 hours 36 minutes | Carrier |
| 20 November 2025 | 6 hours | National Airspace System |
| 19 December 2025 | 6 hours | Late-arriving aircraft |
Delay causes
Why AA 1523 runs late
Carrier accounts for 48% of the 6,042 delay minutes carriers reported here, and the remaining four split what is left.
- 48%Carrier
- 36%Late-arriving aircraft
- 15%National Airspace System
- 1%Extreme weather
36% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 6,042 reported delay minutes here, that single category outweighs weather by 36 to one. The split is drawn from 6,042 delay minutes reported on AA 1523.
Cancellations sit at 2.40% against a national 1.89%, which is ordinary. Diversions add another 0.60%.
Connections and routes
What a delay on this flight costs
7.7% of arrivals land an hour or more late, close to the national 8.3%, so a 60 to 75 minute layover is reasonable here while anything under 45 minutes is a bet. Most delays on this route last close to two hours, which a normal layover absorbs.
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.
AA 1523 is not only a DEN to DFW flight. It also flew DFW to DEN (275 flights, 82.4% 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. 333 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 | 275 | 82.4% | 54 min | 0.36% | B+ |
What to do with this
Booking AA 1523
For a booking, read AA 1523 as 83.3% on time with 2.40% cancelled over 333 flights. Those are rates from the past twelve months, not a forecast for any particular day.
Related
Where to go next
- DEN to DFW, every carrier and departure
- DFW to DEN, the return direction
- American Airlines 420 on the same route65.4%
- United Airlines 1565 on the same route66.9%
- United Airlines 1350 on the same route84.6%
- United Airlines 578 on the same route75.4%
- American Airlines 1832 on the same route61.0%
- American Airlines 852 on the same route84.2%
- 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, September 2025 to August 2026. Last updated ; recomputed monthly. How this data is collected.