Carrier route record

YXPHL→IND

Republic Airways · Philadelphia to Indianapolis

Flights: 571
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 PHL to IND lands a B−, 3 points better than the national rate of 77.3%. About one flight in five arrives 15 minutes late or worse, and those flights are late by an hour and a half on average. That rests on 571 flights. The strongest carrier on the route with a full sample, PSA Airlines, flew 489 at 77.5% on time.

The US average over the same twelve months is 77.3%, so there is little to separate Republic on PHL to IND from the country as a whole. The variation that matters here is internal: which carrier, and what time of day.

On time

80.6%

Arrivals under 15 minutes late, of 552 completed flights

Avg delay

87 min

Across delayed arrivals only, not all flights

Cancelled

3.33%

National rate is 1.89%

Whole route

76.3%

Every carrier on PHL to IND, 1,594 flights

These figures cover 571 flights between September 2025 and August 2026. Beyond the headline rate, 9.1% of arrivals land a full hour or more behind schedule, against 8.3% nationally.

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 PHL to IND

Republic flew 571 of the 1,594 flights on PHL to IND, about 36% of it. Its 80.6% on time is 4 points better than the route as a whole, which runs 76.3%. Ranked by on-time rate it is first of three carriers on the route, where the range runs from Republic at 80.6% to American at 70.6%.

The choice of carrier is not cosmetic here. PSA Airlines arrives on time 77.5% of the time; American Airlines manages 70.6%. Sample sizes sit next to every figure, because a two-point gap across 534 flights means less than a ten-point one.

On-time performance by carrier on PHL to IND
Airline	Flights	On time	Avg delay	Cancelled	Grade
Republic Airways (this page)	571	80.6%	87 min	3.33%	B−
PSA Airlines	489	77.5%	76 min	7.16%	B−
American Airlines	534	70.6%	74 min	2.62%	C

PSA Airlines cancels 7.2% 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.

Flight by flight

Republic flight numbers on PHL to IND

YX 463718:4075.6% · 320 flights

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 18 points, against 7 points between the best and worst carrier.

5am–8am—
8am–11am106 flights94.2%
11am–2pm86 flights80.5%
2pm–5pm18 flights—
5pm–8pm361 flights76.1%
8pm–5am—

Scale runs 70% to 100%. Rows with fewer than 30 flights show a dash.

Book the morning departure. Flights leaving between 8am–11am arrive on time 94.2% of the time, against 76.1% for the evening window. That is 18 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 361 flights scheduled in it.

Across the year

Republic on PHL to IND through the year

Darker means more delays. Figures are on-time percentages.April best, December worst

December is the weak month at 56.7% on time, against 87.9% in April. 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 87.7% on time and Thursday the weakest at 74.0%, a spread of 14 points.

Arrival by arrival

How late Republic on PHL to IND runs when it is late

Republic on PHL to IND often beats the schedule: 281 of 552 completed flights, 51%, arrived 15 minutes or more early. The 107 late arrivals split 22 under half an hour, 35 between 30 and 60 minutes, and 50 an hour or more.

15+ min early281 flights50.9%
Within 15 min164 flights29.7%
15–29 min late22 flights4.0%
30–59 min late35 flights6.3%
1–2 hours late24 flights4.3%
2+ hours late26 flights4.7%

Scale runs 0% to 100%.

Share of 552 completed flights by arrival against schedule.

17 of 104 late departures made up the time and arrived on time, 16% of them. 20 flights left on time and still arrived late.

The worst days

Worst days for Republic on PHL to IND

The latest arrival of the period was on 13 December 2025, 11 hours 54 minutes behind schedule; most of its delay minutes were filed as extreme weather. On three of the five worst days the largest share was filed as a late-arriving aircraft.

The latest arrivals of Republic on PHL to IND in the period
Date	Arrived late by	Largest filed cause
13 December 2025	11 hours 54 minutes	Extreme weather
11 June 2026	5 hours 40 minutes	Extreme weather
2 August 2026	5 hours 36 minutes	Late-arriving aircraft
16 August 2026	5 hours 9 minutes	Late-arriving aircraft
7 July 2026	4 hours 33 minutes	Late-arriving aircraft

Delay causes

Why Republic runs late on this route

Late-arriving aircraft accounts for 56% of the 9,313 delay minutes carriers reported here, and the remaining four split what is left.

Late-arriving aircraft
56%
National Airspace System
16%
Extreme weather
16%
Carrier
12%

Extreme weather accounts for 16% of delay minutes, well above the single-digit share typical across the system. Weather delays are lumpy: they arrive as whole bad days rather than as a steady drag, so the monthly strip above is the more useful view of the risk. The national share is 6%, so this operation carries roughly 2.6 times the usual weather exposure. The split is drawn from 9,313 reported delay minutes.

56% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 9,313 reported delay minutes here, that single category outweighs weather by 4 to one.

Cancellations run at 3.33%, against 1.89% 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 stage length

What a delay here costs

9.1% 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 90.0% on time across 574 flights, 9 points above 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. 571 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 PHL to IND

Put together: the delay figures matter less here than the 3.33% cancellation rate. A late arrival costs you an hour and a half; a cancelled flight costs you the day. Book the 8am–11am departure so there is still a schedule behind you if it goes wrong, and treat a same-day connection as optimistic. 552 completed flights over 12 months sit behind that.

Where to go next

Source: US DOT Bureau of Transportation Statistics, on-time performance data, September 2025 to August 2026. Last updated 22 October 2026; recomputed monthly. How this data is collected.

Key figures