Flight profile · American Airlines
AA1594
Miami (MIA) to St. Louis (STL) · scheduled 10:09 PM – 11:59 PM
How AA1594 performs
628 operations, November 2023 – July 2026.
AA1594 arrived on time 63.5% of the time, against 72.8% for all MIA → STL flights, so this departure is 9.3 percentage points worse than the route as a whole. Against American Airlines’ own flights on this route it is 8.0 points worse.
Source: US DOT Bureau of Transportation Statistics · 628 operations, November 2023 – July 2026 · If AA1594 is cancelled or significantly changed, DOT’s automatic refund rule may entitle you to your money back. The refund checker walks through eligibility.
Where AA1594 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 |
|---|---|---|---|---|---|
| AA1594 | 63.5% | 0.80% | 1 min | 14.3% | 628 |
| American Airlines on MIA → STL | 71.5% | 1.05% | -4 min | 11.3% | 1,519 |
| All MIA → STL flights | 72.8% | 0.81% | -3 min | 9.9% | 3,100 |
Source: FlyerIntel analysis of US DOT BTS data · November 2023 – July 2026
Why AA1594 runs late
Where US DOT attributed the delay minutes on this flight.
the inbound aircraft was late, so this flight started late
crew, maintenance, boarding and fueling, all within the carrier’s control
airspace and airport capacity, including weather-driven flow control
weather severe enough to stop this flight specifically
screening or terminal security incidents
Share of the delay minutes US DOT attributed to each cause for AA1594 on MIA → STL. Only delays of 15 minutes or more are attributed.
Source: US DOT Bureau of Transportation Statistics · Data covering November 2023 – July 2026
Does a late aircraft delay this flight?
How often the plane that flies AA1594 comes in late, and what that does to the departure.
The aircraft flying AA1594 came in 15 or more minutes late on 26% of the departures where its previous flight is known. There are not enough departures in both groups to say how the flight left after a late one and after an on-time one.
Each departure is matched to the flight the same aircraft flew into MIA just before it, using the tail number in the DOT file, 401 of 623 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 |
|---|---|
| AA1594 | 26% |
| Network, same turn | 17% |
The schedule leaves a normal turn: enough time to clean and board if the aircraft is on time, little to spare if it is not.
The network row is every flight with a scheduled turn of 60 to 89 minutes. How often AA1594’s aircraft landed 15 or more minutes late is higher than the network’s. There are not enough departures in both groups to compare how it left.
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 November 2023 – July 2026
From pushback to gate
When it leaves MIA late, does that still matter by the time it reaches STL?
AA1594 pushes back an average of 28.6 minutes late and reaches the gate at STL an average of 21.9 minutes late. The 6.7 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. It spends 22.8 minutes on the taxiways at MIA, 3.3 minutes longer than a typical MIA departure in the same hour.
On arrival at STL, AA1594 spends 7.1 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 1.2 minutes longer than a typical STL arrival (5.9 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 STL. Taxi-out is gate to wheels up and sits inside the scheduled block rather than on top of it; the comparison is 15,882 departures from MIA scheduled in the clock hour AA1594 most often leaves in. Taxi-in is landing to gate, compared against every arrival FlyerIntel has on file at STL (198,659 flights), not just AA1594’s own. More on taxi time.
Source: FlyerIntel analysis of US DOT BTS data · November 2023 – July 2026
The hour it leaves MIA
Part of any flight’s record belongs to the clock rather than to the flight. AA1594 has one departure time, so this is what that time is worth.
On-time arrival rate. 15,882 departures from MIA are scheduled in the 10 PM–11 PM hour over the period, against 340,469 across the whole day.
AA1594 is scheduled out of MIA at 10:09 PM, in the 10 PM–11 PM bank. Departures from MIA in that hour arrive on time 69.4% of the time against 73.2% across the airport’s whole day — the slot alone is worth 3.8 points worse before anything about this particular flight is considered.
The two airport figures cover every departure from MIA 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 · November 2023 – July 2026 · Hours below 120 departures are not scored.
Other routes AA1594 has flown
A flight number is a slot in a schedule, and carriers reassign it. These are the other city pairs this number served in the analysis period.
| Route | Operated | Flights | On time |
|---|---|---|---|
| ORD→LGA Chicago to New York | November 2, 2025 – April 5, 2026 | 144 | 59.8% |
| LAX→ORD Los Angeles to Chicago | April 4, 2024 – November 4, 2024 | 215 | 73.6% |
| ORD→PIT Chicago to Pittsburgh | May 6, 2024 – November 4, 2024 | 181 | 54.5% |
| OKC→DFW Oklahoma City to Dallas–Fort Worth | July 1, 2023 – November 4, 2023 | 109 | 61.1% |
| DFW→OKC Dallas–Fort Worth to Oklahoma City | July 1, 2023 – November 4, 2023 | 81 | — |
Because the same number has served different journeys, the statistics above describe only the route AA1594 currently operates. Blending them would produce an average of two different flights.
When it goes wrong
The average describes a usual day. This is the day that ruins a connection.
86 min late
against a median of 1 min late
AA1594 has an average that understates its risk: a typical arrival is 1 min late, but the worst tenth are 85 minutes worse than that. If the trip has something unmissable at the end of it, the median is the wrong number to plan against.
Percentiles over 628 operations; cancelled and diverted flights are counted separately.
Source: US DOT Bureau of Transportation Statistics · Data covering November 2023 – July 2026
Data and methodology
Calculated by FlyerIntel from 628 records of AA1594 operating MIA → STL, 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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