Flight profile · American Airlines
AA2377
San Antonio (SAT) to Dallas–Fort Worth (DFW) · scheduled 8:00 AM – 9:14 AM
How AA2377 performs
629 operations, November 2023 – July 2026.
AA2377 arrived on time 78.8% of the time, against 75.7% for all SAT → DFW flights, so this departure is 3.1 percentage points better than the route as a whole. Against American Airlines’ own flights on this route it is 2.7 points better.
Source: US DOT Bureau of Transportation Statistics · 629 operations, November 2023 – July 2026 · If AA2377 is cancelled or significantly changed, DOT’s automatic refund rule may entitle you to your money back. The refund checker walks through eligibility.
Where AA2377 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 |
|---|---|---|---|---|---|
| AA2377 | 78.8% | 3.02% | -5 min | 7.9% | 629 |
| American Airlines on SAT → DFW | 76.1% | 2.65% | -5 min | 10.4% | 11,660 |
| All SAT → DFW flights | 75.7% | 2.80% | -5 min | 10.4% | 13,618 |
Source: FlyerIntel analysis of US DOT BTS data · November 2023 – July 2026
Why AA2377 runs late
Where US DOT attributed the delay minutes on this flight.
crew, maintenance, boarding and fueling, all within the carrier’s control
weather severe enough to stop this flight specifically
airspace and airport capacity, including weather-driven flow control
the inbound aircraft was late, so this flight started late
Share of the delay minutes US DOT attributed to each cause for AA2377 on SAT → DFW. 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 AA2377 comes in late, and what that does to the departure.
AA2377 is usually the aircraft’s first flight of the day: the schedule gives it a median of 10 hours on the ground at SAT, so its “inbound” is mostly the aircraft’s arrival the evening before.
When the aircraft came in 15 or more minutes late, AA2377 pushed back an average of 14 minutes late; when it came in on time or early, an average of 13 minutes late.
Each departure is matched to the flight the same aircraft flew into SAT just before it, using the tail number in the DOT file, 480 of 611 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 |
|---|---|---|---|
| AA2377 | 44% | 20% | 9% |
| 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 AA2377’s aircraft landed 15 or more minutes late is higher than the network’s and, once the aircraft was late, how often AA2377 left 15 or more minutes late is higher 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 November 2023 – July 2026
From pushback to gate
When it leaves SAT late, does that still matter by the time it reaches DFW?
On arrival at DFW, AA2377 spends 13.6 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 about what any arrival at DFW spends on the ground before reaching the gate.
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 6,143 departures from SAT scheduled in the clock hour AA2377 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 AA2377’s own. More on taxi time.
Source: FlyerIntel analysis of US DOT BTS data · November 2023 – July 2026
The hour it leaves SAT
Part of any flight’s record belongs to the clock rather than to the flight. AA2377 has one departure time, so this is what that time is worth.
On-time arrival rate. 6,143 departures from SAT are scheduled in the 8 AM–9 AM hour over the period, against 127,237 across the whole day.
AA2377 is scheduled out of SAT at 8:00 AM, in the 8 AM–9 AM bank. Departures from SAT in that hour arrive on time 87.7% of the time against 82.3% across the airport’s whole day — the slot alone is worth 5.4 points better before anything about this particular flight is considered.
The two airport figures cover every departure from SAT 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 AA2377 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 |
|---|---|---|---|
| DFW→SYR Dallas–Fort Worth to Syracuse | November 2, 2025 – April 6, 2026 | 117 | 56.5% |
| LAS→MIA Las Vegas to Miami | January 6, 2026 – February 11, 2026 | 37 | — |
| LAX→DFW Los Angeles to Dallas–Fort Worth | September 8, 2024 – November 4, 2024 | 32 | — |
| BUF→CLT Buffalo to Charlotte | August 6, 2024 – September 3, 2024 | 29 | — |
| CLT→BUF Charlotte to Buffalo | August 6, 2024 – September 3, 2024 | 29 | — |
| CLT→TYS Charlotte to Knoxville/Maryville | June 5, 2024 – August 5, 2024 | 62 | — |
| SRQ→CLT Sarasota/Bradenton to Charlotte | May 6, 2024 – June 4, 2024 | 30 | — |
| CLT→SRQ Charlotte to Sarasota/Bradenton | May 6, 2024 – June 4, 2024 | 28 | — |
| ORD→STL Chicago to St. Louis | April 4, 2024 – May 4, 2024 | 29 | — |
| STL→ORD St. Louis to Chicago | April 4, 2024 – May 4, 2024 | 29 | — |
| MIA→SAN Miami to San Diego | August 15, 2023 – October 4, 2023 | 51 | — |
| DTW→DFW Detroit to Dallas–Fort Worth | July 1, 2023 – August 14, 2023 | 45 | — |
Because the same number has served different journeys, the statistics above describe only the route AA2377 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.
46 min late
against a median of 5 min early
Percentiles over 629 operations; cancelled and diverted flights are counted separately.
Source: US DOT Bureau of Transportation Statistics · Data covering November 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 |
|---|---|---|---|---|
| AA2342 | American Airlines | 90.6% | 10 min early | 1,083 |
| AA2377 this flight | American Airlines | 78.8% | 5 min early | 629 |
| AA1961 | American Airlines | 54.9% | 11 min late | 656 |
Every departure listed carries at least 600 operations, so the comparison is between figures that mean something. AA2377 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 629 records of AA2377 operating SAT → 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
Analysis last recomputed