Flight number record
AA 3147
American Airlines · Key West to Philadelphia
- Route
- EYW → PHL
- Departs
- 17:04
- Flights
- 272
- Period
- July 2025 to June 2026
Historical statistics for July 2025 to June 2026, not live status. For today’s AA 3147, check with American Airlines.
AA 3147 earns a D−, which is as low as this site's scale goes for a reason. Only 57.4% of flights arrive inside the 15-minute window, 20 points worse than the national rate of 77.6%. Late arrivals average about 2.1 hours. Treat any tight connection here as a coin flip. That rests on 272 flights, with a median arrival 9 minutes late.
The national on-time rate over the same period is 77.6%, so AA 3147 runs 20 points behind the country as a whole. Across a thousand flights that is about 202 extra late arrivals.
Key figures
On time
57.4%
Arrivals under 15 minutes late, of 258 completed flights
Avg delay
127 min
Across delayed arrivals only, not all flights
Cancelled
3.31%
National rate is 1.81%
1 hour+ late
21.3%
National rate is 8.1%
These figures cover 272 flights between July 2025 and June 2026. Beyond the headline rate, 21.3% of arrivals land a full hour or more behind schedule. That is the number that wrecks a connection, and it is not visible in an on-time percentage alone.
Schedule
When AA 3147 flies
AA 3147 flies EYW to PHL without a single fixed slot. Its most common scheduled departure was 17:04, used on 55 of 272 flights, with 17:37 (41 flights) and 16:58 (39 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.
- Departs 17:0455 flights20.2%
- Departs 17:3741 flights15.1%
- Departs 16:5839 flights14.3%
Scale runs 0% to 100%. Rows with fewer than 30 flights show a dash.
Share of scheduled departures at each local time. Times used on fewer than one flight in ten are not listed.
A 17:04 departure sits in the 5pm–8pm window. Across every US flight scheduled in that window the on-time rate is 68.2%, and AA 3147 runs 11 points worse at 57.4%. By that time of day most aircraft have flown several legs already, and whatever went wrong earlier is still in the schedule.
Against the route
AA 3147 next to EYW to PHL
Every carrier on EYW to PHL combined arrived on time 66.9% of the time across 493 flights, so AA 3147 is 10 points behind it. Across its whole network American Airlines managed 74.4%, which this flight trails by 17 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| AA 3147thin sample | 272 | 57.4% | 127 min | 3.31% | D− |
| All American Airlines on EYW–PHLthin sample | 321 | 57.5% | 128 min | 3.12% | D− |
| All carriers on EYW–PHL | 493 | 66.9% | 115 min | 3.04% | C− |
| American Airlines, whole network | 986,297 | 74.4% | 85 min | 2.29% | C |
Across the year
AA 3147 quarter by quarter
AA 3147 did not run the same all year. Its best quarter was Oct–Dec 2025 at 70.0% on time and its weakest Apr–Jun 2026 at 50.0%, a swing of 20 points on roughly 68 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 202564 flights53.3%
- Oct–Dec 202583 flights70.0%
- Jan–Mar 202678 flights51.4%
- Apr–Jun 202647 flights50.0%
Scale runs 40% to 75%. Rows with fewer than 30 flights show a dash.
By weekday, AA 3147 did best on Tuesday at 74.3% on time and worst on Saturday at 40.5%. Each day rests on about 39 flights, so a gap of 34 points is worth noticing but could still narrow in another year.
Delay causes
Why AA 3147 runs late
One category carries most of the weight here. Late-arriving aircraft accounts for 64% of the 14,000 delay minutes carriers reported, and the remaining four split what is left. The split is by minutes rather than by flights, so a few very long delays count for as much as many short ones.
- 64%Late-arriving aircraft
- 23%Carrier
- 7%Extreme weather
- 6%National Airspace System
64% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. That is a cascade, and cascades start small and grow through the day. Across 14,000 reported delay minutes here, that single category outweighs weather by 9 to one. It is the strongest argument for booking the first departure of the morning, when the aircraft has been sitting at the gate overnight with nothing to inherit. The split is drawn from 13,999 delay minutes reported on AA 3147.
Cancellations run at 3.31%, against 1.81% nationally. That is about one flight in 30 cancelled outright. A cancelled flight is invisible in every on-time figure on this page, so the punctuality numbers above describe only the flights that actually operated.
Connections and routes
What a delay on this flight costs
For anyone connecting, the number to weigh is not the on-time rate but the tail behind it. 21.3% of arrivals land a full hour or more behind schedule, against 8.1% nationally. A 45-minute layover does not survive that, and no amount of walking quickly changes it. Ninety minutes is the honest minimum here, and two hours if the onward flight is on a separate ticket.
The 1,122 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. It is also long enough that the aircraft usually flies three or four legs a day rather than six, which slows how fast delay compounds.
The same number turns up on one other city pair in the data, including PHX to MSN (44), but none flew often enough under AA 3147 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to EYW to PHL only.
One caution: this is a thin sample. 272 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.
What to do with this
Booking AA 3147
For a booking, the cancellation rate is the figure to plan around on AA 3147: 3.31% of its 272 scheduled flights did not operate. A late arrival costs about 2.1 hours, but a cancellation costs the day, so leave a later option open.
Related
Where to go next
- Philadelphia International (PHL) 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, July 2025 to June 2026. Last updated 15 September 2026; recomputed monthly. How this data is collected.