Carrier route record
AAIND→PHL
American Airlines · Indianapolis to Philadelphia
- Flights
- 535
- Period
- September 2025 to August 2026
- Share of route
- 34%
- Carriers
- 3
Historical statistics for September 2025 to August 2026, not live status. For today’s flights, check with American Airlines.
American on IND to PHL lands a B, about a point worse than the national rate of 77.3%. About one flight in four arrives 15 minutes late or worse, and those flights are late by close to two hours on average. That rests on 535 flights. The strongest carrier on the route with a full sample, Republic Airways, flew 574 at 90.0% on time.
The US average over the same twelve months is 77.3%, so there is little to separate American on IND to PHL from the country as a whole. The variation that matters here is internal: which carrier, and what time of day.
Key figures
On time
76.4%
Arrivals under 15 minutes late, of 521 completed flights
Avg delay
106 min
Across delayed arrivals only, not all flights
Cancelled
2.62%
National rate is 1.89%
Whole route
80.9%
Every carrier on IND to PHL, 1,596 flights
These figures cover 535 flights between September 2025 and August 2026. Beyond the headline rate, 9.6% of arrivals land a full hour or more behind schedule, against 8.3% nationally.
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Carrier by carrier
American against every carrier on IND to PHL
American flew 535 of the 1,596 flights on IND to PHL, about 34% of it. Its 76.4% on time is 5 points worse than the route as a whole, which runs 80.9%. Ranked by on-time rate it is number two of three carriers on the route, where the range runs from Republic at 90.0% to PSA at 74.8%.
The choice of carrier is not cosmetic here. Republic Airways arrives on time 90.0% of the time; PSA Airlines manages 74.8%. Sample sizes sit next to every figure, because a two-point gap across 487 flights means less than a ten-point one.
| Airline | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| Republic Airways | 574 | 90.0% | 59 min | 1.92% | A |
| American Airlines (this page) | 535 | 76.4% | 106 min | 2.62% | B |
| PSA Airlines | 487 | 74.8% | 132 min | 8.83% | C− |
PSA Airlines cancels 8.8% of what it schedules here, the highest in the table. A cancelled flight never appears in an on-time rate, so read that column alongside the punctuality one rather than after it.
Timetable by Aviasales, a Travelpayouts partner. Booking through it may earn this site a commission at no cost to you; it changes no figure here.
Departure window
When American runs best on this route
Departure time matters more here than the choice of carrier. The gap between the best and worst window is 19 points, against 15 points between the best and worst carrier.
- 5am–8am87 flights88.0%
- 8am–11am28 flights—
- 11am–2pm105 flights83.7%
- 2pm–5pm150 flights68.9%
- 5pm–8pm165 flights70.9%
- 8pm–5am—
Scale runs 60% to 95%. Rows with fewer than 30 flights show a dash.
Book the early departure. Flights leaving between 5am–8am arrive on time 88.0% of the time, against 68.9% for the afternoon window. That is 19 points of difference for no extra money, and it comes from the same aircraft having had no earlier flight to fall behind on. The 5pm–8pm window is the busiest, with 165 flights scheduled in it.
Across the year
American on IND to PHL through the year
December is the weak month at 68.8% on time, against 83.0% in August. Winter delays cluster: a single storm system can account for most of a month's shortfall, so an average December hides both very good weeks and genuinely unflyable days. October was the busiest month here, with 111 flights.
Across the week, Friday is the strongest day at 81.9% on time and Sunday the weakest at 68.8%, a spread of 13 points.
Arrival by arrival
How late American on IND to PHL runs when it is late
American on IND to PHL often beats the schedule: 156 of 521 completed flights, 30%, arrived 15 minutes or more early. The 123 late arrivals split 34 under half an hour, 39 between 30 and 60 minutes, and 50 an hour or more.
- 15+ min early156 flights29.9%
- Within 15 min242 flights46.4%
- 15–29 min late34 flights6.5%
- 30–59 min late39 flights7.5%
- 1–2 hours late26 flights5.0%
- 2+ hours late24 flights4.6%
Scale runs 0% to 100%.
Share of 521 completed flights by arrival against schedule.
30 of 140 late departures made up the time and arrived on time, 21% of them. 13 flights left on time and still arrived late.
The worst days
Worst days for American on IND to PHL
The latest arrival of the period was on 7 October 2025, 27 hours 12 minutes behind schedule; most of its delay minutes were filed as carrier-caused (crew, maintenance, fuelling, baggage). On three of the five worst days the largest share was filed as a late-arriving aircraft.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 7 October 2025 | 27 hours 12 minutes | Carrier |
| 31 May 2026 | 23 hours 23 minutes | Carrier |
| 14 June 2026 | 14 hours 11 minutes | Late-arriving aircraft |
| 13 December 2025 | 6 hours 39 minutes | Late-arriving aircraft |
| 31 October 2025 | 5 hours 59 minutes | Late-arriving aircraft |
Delay causes
Why American runs late on this route
Late-arriving aircraft accounts for 51% of the 13,000 delay minutes carriers reported here, and the remaining four split what is left.
- 51%Late-arriving aircraft
- 38%Carrier
- 7%National Airspace System
- 4%Extreme weather
51% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 13,000 reported delay minutes here, that single category outweighs weather by 14 to one. The split is drawn from 13,002 reported delay minutes.
The largest share of delay minutes, 38%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 4,994 of the 13,000 delay minutes reported here.
Cancellations run at 2.62%, against 1.89% nationally. That is about one flight in 40 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 stage length
What a delay here costs
9.6% of arrivals land a full hour or more behind schedule, against 8.3% nationally. Ninety minutes is the honest minimum for a connection here, and two hours if the onward flight is on a separate ticket.
The 588 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.
The return leg is a different operation and performs like one: it runs 70.6% on time across 534 flights, 6 points below this direction. Departure banks, aircraft rotations and the congestion at each end all differ, so scoring the two directions together would average away a real 6 points of difference.
One caution: this is a thin sample. 535 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 American on IND to PHL
Put together: treat all of this as provisional. 535 flights over twelve months is enough to clear this site's floor and not enough to be confident to better than a couple of points. The 76.4% headline is the most reliable number on the page; the hour and month splits below it are built on a few dozen flights each. 521 completed flights over 12 months sit behind that.
Related
Where to go next
- IND to PHL, every carrier
- American on PHL to IND, the return leg
- Republic Airways on IND to PHL90.0%
- PSA Airlines on IND to PHL74.8%
- American Airlines network-wide record
- Indianapolis International (IND) delay statistics
- Philadelphia International (PHL) delay statistics
- The US routes with the most cancellations
- Same route, different airline: where the carrier you pick matters most
Source: US DOT Bureau of Transportation Statistics, on-time performance data, September 2025 to August 2026. Last updated ; recomputed monthly. How this data is collected.