Carrier route record

YXPHL→IND

Republic Airways · Philadelphia to Indianapolis

Flights: 601
Period: July 2025 to June 2026
Share of route: 39%
Carriers: 3

Historical statistics for July 2025 to June 2026, not live status. For today’s flights, check with Republic Airways.

Republic on PHL to IND lands a B−, 2 points better than the national rate of 77.6%. About one flight in five arrives 15 minutes late or worse, and those flights are late by a little over an hour on average. That is a workable record, not a spotless one. That rests on 601 flights, with a median arrival 13 minutes early.

The US average over the same twelve months is 77.6%, 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

79.9%

Arrivals under 15 minutes late, of 576 completed flights

Avg delay

74 min

Across delayed arrivals only, not all flights

Cancelled

3.99%

National rate is 1.81%

Whole route

75.9%

Every carrier on PHL to IND, 1,549 flights

These figures cover 601 flights between July 2025 and June 2026. The median arrival is 13 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.

Carrier by carrier

Republic against every carrier on PHL to IND

Republic flew 601 of the 1,549 flights on PHL to IND, about 39% of it. Its 79.9% on time is 4 points better than the route as a whole, which runs 75.9%. Ranked by on-time rate it is first of three carriers on the route, where the range runs from Republic at 79.9% to American at 71.0%. One of those carriers flew fewer than 365 flights here, so treat their positions as rough.

Only one carrier clears this site's 365-flight floor here, so there is no comparison to draw. The table below is the full picture.

On-time performance by carrier on PHL to IND
Airline	Flights	On time	Avg delay	Cancelled	Grade
Republic Airways (this page)	601	79.9%	74 min	3.99%	B−
PSA Airlinesthin sample	338	78.0%	66 min	5.92%	B−
American Airlines	610	71.0%	71 min	2.30%	C

Flight by flight

Republic flight numbers on PHL to IND

YX 463718:4073.5% · 320 flights

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 20 points, against half a point between the best and worst carrier. Each bar is the on-time rate for flights scheduled inside that window.

5am–8am—
8am–11am132 flights93.8%
11am–2pm86 flights80.5%
2pm–5pm21 flights—
5pm–8pm362 flights74.3%
8pm–5am—

Scale runs 65% to 100%. Rows with fewer than 30 flights show a dash.

Book the morning departure. Flights leaving between 8am–11am arrive on time 93.8% of the time, against 74.3% for the evening window. That is 20 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 362 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 87.4% on time and Sunday the weakest at 75.0%. 12 points is a smaller lever than departure hour, but it is free.

Delay causes

Why Republic runs late on this route

One category carries most of the weight here. Late-arriving aircraft accounts for 53% of the 8,608 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.

Late-arriving aircraft
53%
National Airspace System
20%
Extreme weather
14%
Carrier
14%

Extreme weather accounts for 14% 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 2.2 times the usual weather exposure. The split is drawn from 8,608 reported delay minutes.

53% 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 8,608 reported delay minutes here, that single category outweighs weather by 4 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.

Cancellations run at 3.99%, against 1.81% nationally. That is about one flight in 25 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

7.6% of arrivals land an hour or more late, close to the national 8.1%. That is the figure that decides a connection, and it says a 60 to 75 minute layover is reasonable here while anything under 45 minutes is a bet. Most delays on this route last a little over an hour, which a normal layover absorbs.

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. 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 return leg is a different operation and performs like one: it runs 89.6% on time across 602 flights, 10 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 10 points of difference.

One caution: this is a thin sample. 601 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 3.99% cancellation rate. A late arrival costs you a little over an hour; 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. 576 completed flights over 12 months sit behind that.

Where to go next

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.

Key figures