Flight profile · American Airlines
AA2637
Phoenix (PHX) to Santa Ana (SNA) · scheduled 8:30 PM – 9:51 PM
How AA2637 performs
971 operations, July 2023 – July 2026.
AA2637 arrived on time 84.5% of the time, against 81.8% for all PHX → SNA flights, so this departure is 2.7 percentage points better than the route as a whole. Against American Airlines’ own flights on this route it is 2.8 points better.
Source: US DOT Bureau of Transportation Statistics · 971 operations, July 2023 – July 2026 · If AA2637 is cancelled or significantly changed, DOT’s automatic refund rule may entitle you to your money back. The refund checker walks through eligibility.
Where AA2637 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 |
|---|---|---|---|---|---|
| AA2637 | 84.5% | 0.41% | -7 min | 2.4% | 971 |
| American Airlines on PHX → SNA | 81.7% | 0.38% | -5 min | 6.4% | 5,526 |
| All PHX → SNA flights | 81.8% | 0.53% | -6 min | 4.8% | 13,640 |
Source: FlyerIntel analysis of US DOT BTS data · July 2023 – July 2026
Why AA2637 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
weather severe enough to stop this flight specifically
airspace and airport capacity, including weather-driven flow control
screening or terminal security incidents
Share of the delay minutes US DOT attributed to each cause for AA2637 on PHX → SNA. 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 AA2637 comes in late, and what that does to the departure.
When the aircraft came in 15 or more minutes late, AA2637 pushed back an average of 32 minutes late; when it came in on time or early, an average of 3 minutes late.
Each departure is matched to the flight the same aircraft flew into PHX just before it, using the tail number in the DOT file, 876 of 967 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 |
|---|---|---|---|
| AA2637 | 19% | 44% | 11% |
| Network, same turn | 17% | 68% | 9% |
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 AA2637’s aircraft landed 15 or more minutes late is about the same as the network’s and, once the aircraft was late, how often AA2637 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 PHX late, does that still matter by the time it reaches SNA?
AA2637 pushes back an average of 15.4 minutes late and reaches the gate at SNA an average of 9.5 minutes late. The 5.9 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 16.2 minutes on the taxiways at PHX is about what any departure from the airport in that hour spends.
On arrival at SNA, AA2637 spends 6.2 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 SNA 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 SNA. Taxi-out is gate to wheels up and sits inside the scheduled block rather than on top of it; the comparison is 32,500 departures from PHX scheduled in the clock hour AA2637 most often leaves in. Taxi-in is landing to gate, compared against every arrival FlyerIntel has on file at SNA (137,357 flights), not just AA2637’s own. More on taxi time.
Source: FlyerIntel analysis of US DOT BTS data · July 2023 – July 2026
The hour it leaves PHX
Part of any flight’s record belongs to the clock rather than to the flight. AA2637 has one departure time, so this is what that time is worth.
On-time arrival rate. 32,500 departures from PHX are scheduled in the 8 PM–9 PM hour over the period, against 598,518 across the whole day.
AA2637 is scheduled out of PHX at 8:30 PM, in the 8 PM–9 PM bank. Departures from PHX in that hour arrive on time 73.4% of the time against 80.3% across the airport’s whole day — the slot alone is worth 6.9 points worse before anything about this particular flight is considered.
The two airport figures cover every departure from PHX 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 AA2637 run worse on particular days?
Wednesday is historically the most reliable day and Sunday the least, a gap of 8.2 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.
25 min late
against a median of 7 min early
Percentiles over 971 operations; cancelled and diverted flights are counted separately.
Source: US DOT Bureau of Transportation Statistics · Data covering July 2023 – July 2026
Data and methodology
Calculated by FlyerIntel from 971 records of AA2637 operating PHX → SNA, 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