Carrier route record
YXIND→PHL
Republic Airways · Indianapolis to Philadelphia
- Flights
- 574
- Period
- September 2025 to August 2026
- Share of route
- 36%
- Carriers
- 3
Historical statistics for September 2025 to August 2026, not live status. For today’s flights, check with Republic Airways.
Republic on IND to PHL earns an A. Close to nine flights in ten arrive inside the 15-minute window the DOT uses to define an on-time arrival, which puts it 13 points better than the national rate of 77.3%. When something does go wrong the average delay runs about an hour. That rests on 574 flights. The strongest carrier on the route with a full sample, American Airlines, flew 535 at 76.4% on time.
Set against the rest of the country, Republic's IND to PHL record is 13 points better than the US average of 77.3%. That gap is worth roughly 127 fewer late arrivals for every thousand flights.
Key figures
On time
90.0%
Arrivals under 15 minutes late, of 560 completed flights
Avg delay
59 min
Across delayed arrivals only, not all flights
Cancelled
1.92%
National rate is 1.89%
Whole route
80.9%
Every carrier on IND to PHL, 1,596 flights
These figures cover 574 flights between September 2025 and August 2026. The median arrival is 15 minutes early, which is the part an average hides: most flights here are fine, and the on-time rate is decided by a tail of badly late ones. On-time means under 15 minutes late, the DOT's own threshold.
Fare search by Aviasales, a Travelpayouts partner. Booking through it may earn this site a commission at no cost to you; it changes no figure here.
Carrier by carrier
Republic against every carrier on IND to PHL
Republic flew 574 of the 1,596 flights on IND to PHL, about 36% of it. Its 90.0% on time is 9 points better than the route as a whole, which runs 80.9%. Ranked by on-time rate it is first of three carriers on the route, where the range runs from Republic at 90.0% to PSA at 74.8%.
The two carriers here are closely matched: 2 points separate the best from the worst. At that spread, schedule and price are better tie-breakers than reliability. Sample sizes are shown so you can see which rows are worth weighing.
| Airline | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| Republic Airways (this page) | 574 | 90.0% | 59 min | 1.92% | A |
| American Airlines | 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 Republic runs best on this route
Departure time matters more here than the choice of carrier. The gap between the best and worst window is 14 points, against 2 points between the best and worst carrier.
- 5am–8am331 flights92.6%
- 8am–11am74 flights91.8%
- 11am–2pm69 flights91.0%
- 2pm–5pm92 flights78.2%
- 5pm–8pm8 flights—
- 8pm–5am—
Scale runs 70% to 100%. Rows with fewer than 30 flights show a dash.
Book the early departure. Flights leaving between 5am–8am arrive on time 92.6% of the time, against 78.2% for the afternoon window. That is 14 points of difference for no extra money, and it comes from the same aircraft having had no earlier flight to fall behind on. The 5am–8am window is the busiest, with 331 flights scheduled in it.
Across the year
Republic on IND to PHL through the year
January is the weak month at 79.3% on time, against 100.0% in September. 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. March was the busiest month here, with 93 flights.
Across the week, Tuesday is the strongest day at 93.9% on time and Monday the weakest at 84.0%, a spread of 10 points.
Arrival by arrival
How late Republic on IND to PHL runs when it is late
Republic on IND to PHL often beats the schedule: 290 of 560 completed flights, 52%, arrived 15 minutes or more early. The 56 late arrivals split 22 under half an hour, 15 between 30 and 60 minutes, and 19 an hour or more.
- 15+ min early290 flights51.8%
- Within 15 min214 flights38.2%
- 15–29 min late22 flights3.9%
- 30–59 min late15 flights2.7%
- 1–2 hours late12 flights2.1%
- 2+ hours late7 flights1.3%
Scale runs 0% to 100%.
Share of 560 completed flights by arrival against schedule.
13 of 54 late departures made up the time and arrived on time, 24% of them. 15 flights left on time and still arrived late.
The worst days
Worst days for Republic on IND to PHL
The latest arrival of the period was on 26 January 2026, 3 hours 34 minutes behind schedule; most of its delay minutes were filed as national airspace system delay. Three of the five worst days fell in January 2026.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 26 January 2026 | 3 hours 34 minutes | National Airspace System |
| 27 January 2026 | 3 hours 10 minutes | Late-arriving aircraft |
| 8 March 2026 | 3 hours 4 minutes | Late-arriving aircraft |
| 27 January 2026 | 2 hours 51 minutes | Extreme weather |
| 13 March 2026 | 2 hours 36 minutes | National Airspace System |
Delay causes
Why Republic runs late on this route
Late-arriving aircraft accounts for 43% of the 3,312 delay minutes carriers reported here, and the remaining four split what is left.
- 43%Late-arriving aircraft
- 29%National Airspace System
- 20%Carrier
- 7%Extreme weather
43% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 3,312 reported delay minutes here, that single category outweighs weather by 6 to one. The split is drawn from 3,312 reported delay minutes.
The practical consequence: the 5am–8am departure is the one that starts clean. Its aircraft has no earlier leg to be late from, which is exactly why that window shows 92.6% on time here.
Cancellations sit at 1.92% against a national 1.89%, which is ordinary. Diversions add another 0.52%.
Connections and stage length
What a delay here costs
Badly late arrivals are rare here: only 3.4% land an hour or more behind schedule, against 8.3% nationally. Connections built on this flight are about as safe as US domestic connections get, though a cancelled flight still ignores every layover you give it.
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 80.6% on time across 571 flights, 9 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 9 points of difference.
One caution: this is a thin sample. 574 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 Republic on IND to PHL
Put together: treat all of this as provisional. 574 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 90.0% headline is the most reliable number on the page; the hour and month splits below it are built on a few dozen flights each. 560 completed flights over 12 months sit behind that.
Related
Where to go next
- IND to PHL, every carrier
- Republic on PHL to IND, the return leg
- American Airlines on IND to PHL76.4%
- PSA Airlines on IND to PHL74.8%
- Republic Airways network-wide record
- Indianapolis International (IND) delay statistics
- Philadelphia International (PHL) delay statistics
- Why the first flight of the morning is statistically safest
- The best time of day to fly, according to 7.05 million flight records
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.