Flight profile · American Airlines
AA1544
Sacramento (SMF) to Dallas–Fort Worth (DFW) · scheduled 6:00 AM – 11:25 AM
How AA1544 performs
1,126 operations, July 2023 – July 2026.
AA1544 arrived on time 89.7% of the time, against 79.2% for all SMF → DFW flights, so this departure is 10.5 percentage points better than the route as a whole. Against American Airlines’ own flights on this route it is 10.1 points better.
Source: US DOT Bureau of Transportation Statistics · 1,126 operations, July 2023 – July 2026 · If AA1544 is cancelled or significantly changed, DOT’s automatic refund rule may entitle you to your money back. The refund checker walks through eligibility.
What stands out
How AA1544 compares to other flight numbers, not just to itself.
This flight runs unusually far ahead of the carrier's own average on this route, better than 92% of 11,589 comparable flight numbers.
89.7% on time for this specific departure, against 79.6% for the same carrier's other flights on this route.
Source: FlyerIntel analysis of US DOT BTS data · July 2023 – July 2026 · The one thing about this specific departure that ranks most extreme against every other published flight number, out of everything FlyerIntel checks — shown only when something clears a real statistical bar, not for every flight.
Where AA1544 is right now
A live reading, only if you ask for it. It is not part of the reliability record above.
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Against the rest of the route
| Flight or route | On time | Cancelled | Median delay | Severe | Flights |
|---|---|---|---|---|---|
| AA1544 | 89.7% | 2.31% | -12 min | 3.8% | 1,126 |
| American Airlines on SMF → DFW | 79.6% | 2.23% | -9 min | 8.0% | 5,246 |
| All SMF → DFW flights | 79.2% | 2.24% | -9 min | 8.1% | 5,314 |
Source: FlyerIntel analysis of US DOT BTS data · July 2023 – July 2026
Why AA1544 runs late
Where US DOT attributed the delay minutes on this flight.
crew, maintenance, boarding and fueling, all within the carrier’s control
the inbound aircraft was late, so this flight started late
airspace and airport capacity, including weather-driven flow control
weather severe enough to stop this flight specifically
Share of the delay minutes US DOT attributed to each cause for AA1544 on SMF → DFW. Only delays of 15 minutes or more are attributed.
Source: US DOT Bureau of Transportation Statistics · Data covering July 2023 – July 2026
Does a late aircraft delay this flight?
How often the plane that flies AA1544 comes in late, and what that does to the departure.
AA1544 is usually the aircraft’s first flight of the day: the schedule gives it a median of 6.6 hours on the ground at SMF, so its “inbound” is mostly the aircraft’s arrival the evening before.
When the aircraft came in 15 or more minutes late, AA1544 pushed back an average of 1 minute late; when it came in on time or early, an average of 2 minutes late.
Each departure is matched to the flight the same aircraft flew into SMF just before it, using the tail number in the DOT file, 1,035 of 1,100 departures in all. A departure is left out when that flight is unknown, was cancelled or diverted, or the aircraft had sat for more than 12 hours. A flight the airline cancelled never left and is not in the count, and one flown by a substitute aircraft is matched to the aircraft that flew it, not to the one first planned.
Against the network at the same turn length
| Share of departures | Inbound landed 15+ late | Left 15+ late after a late inbound | Left 15+ late after an on-time inbound |
|---|---|---|---|
| AA1544 | 43% | 9% | 7% |
| Network, same turn | 29% | 12% | 9% |
A night on the ground absorbs most of a late arrival, so a late inbound matters far less on a turn this long than on a same-day one.
The network row is every flight with a scheduled turn of 6 hours or more, usually overnight. How often AA1544’s aircraft landed 15 or more minutes late is higher than the network’s and, once the aircraft was late, how often AA1544 left 15 or more minutes late is lower than the network’s.
More: Which Flight Numbers Pay for a Late Aircraft lists the flight numbers that pass a late aircraft on.
Source: US DOT Bureau of Transportation Statistics · Data covering July 2023 – July 2026
From pushback to gate
When it leaves SMF late, does that still matter by the time it reaches DFW?
AA1544 pushes back an average of 5.5 minutes late and reaches the gate at DFW an average of 0.7 minutes early. The 6.2 minutes between those two figures are slack the published schedule already carries, which is why a late pushback on this flight does not reliably become a late arrival. Its 14.0 minutes on the taxiways at SMF is about what any departure from the airport in that hour spends.
On arrival at DFW, AA1544 spends 11.9 min taxiing from touchdown to the gate — ground time a connecting passenger sits through before they can even leave the aircraft, on top of however late the flight itself ran. That is 1.6 minutes shorter than a typical DFW arrival (13.5 min).
Departure delay is averaged over every pushback and arrival delay over every completed arrival, so the two counts differ by the flights that never reached DFW. Taxi-out is gate to wheels up and sits inside the scheduled block rather than on top of it; the comparison is 16,970 departures from SMF scheduled in the clock hour AA1544 most often leaves in. Taxi-in is landing to gate, compared against every arrival FlyerIntel has on file at DFW (961,642 flights), not just AA1544’s own. More on taxi time.
Source: FlyerIntel analysis of US DOT BTS data · July 2023 – July 2026
The hour it leaves SMF
Part of any flight’s record belongs to the clock rather than to the flight. AA1544 has one departure time, so this is what that time is worth.
On-time arrival rate. 16,970 departures from SMF are scheduled in the 6 AM–7 AM hour over the period, against 172,472 across the whole day.
AA1544 is scheduled out of SMF at 6:00 AM, in the 6 AM–7 AM bank. Departures from SMF in that hour arrive on time 93.5% of the time against 83.2% across the airport’s whole day — the slot alone is worth 10.3 points better before anything about this particular flight is considered.
The two airport figures cover every departure from SMF to every destination, so they describe the slot rather than this journey — the like-for-like comparison against the route is above. Hours are scheduled local, and a number whose schedule moved between banks inside the period has no single hour and is not described here at all. Why the hour matters.
Source: FlyerIntel analysis of US DOT BTS data · July 2023 – July 2026 · Hours below 120 departures are not scored.
By day of week
Does AA1544 run worse on particular days?
Wednesday is historically the most reliable day and Saturday the least, a gap of 7.7 percentage points.
Source: FlyerIntel analysis of US DOT BTS data · July 2023 – July 2026 · Days with fewer than 120 operations are not scored.
When it goes wrong
The average describes a usual day. This is the day that ruins a connection.
15 min late
against a median of 12 min early
Percentiles over 1,126 operations; cancelled and diverted flights are counted separately.
Source: US DOT Bureau of Transportation Statistics · Data covering July 2023 – July 2026
Other flights on this route
Same airports, same journey, different odds of arriving on time.
| Flight | Airline | On time | Median arrival | Operations |
|---|---|---|---|---|
| AA1544 this flight | American Airlines | 89.7% | 12 min early | 1,126 |
| AA2081 | American Airlines | 79.1% | 8 min early | 609 |
Every departure listed carries at least 600 operations, so the comparison is between figures that mean something. AA1544 is placed in the same ordering rather than left out of it; the rows around it are the most punctual departures on the route, not all of them, so this is a comparison and not a rank. Schedules change; confirm the departure still operates before booking around this.
Data and methodology
Calculated by FlyerIntel from 1,126 records of AA1544 operating SMF → DFW, published by the US DOT Bureau of Transportation Statistics. A flight counts as delayed when it arrives 15 or more minutes after schedule. Cancelled and diverted flights are excluded from the on-time rate and reported separately. Flight numbers are resolved as carrier plus number plus route, because the same number serves different routes over time.
Full methodology · Data sources · Report a problem
Related research: Most and Least Reliable Flight Numbers · The Delay You Inherit · Making Up Time in the Air
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