Carrier route record

YXIND→DTW

Republic Airways · Indianapolis to Detroit

Flights: 191
Period: July 2025 to June 2026
Share of route: 20%
Carriers: 3

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

Republic on IND to DTW lands a B, 4 points better than the national rate of 77.6%. About one flight in six arrives 15 minutes late or worse, and those flights are late by roughly 50 minutes on average. That is a workable record, not a spotless one. That rests on 191 flights, with a median arrival 7 minutes early.

Set against the rest of the country, Republic's IND to DTW record is 4 points better than the US average of 77.6%. That gap is worth roughly 44 fewer late arrivals for every thousand flights.

On time

82.0%

Arrivals under 15 minutes late, of 189 completed flights

Avg delay

48 min

Across delayed arrivals only, not all flights

Cancelled

1.05%

National rate is 1.81%

Whole route

79.7%

Every carrier on IND to DTW, 979 flights

These figures cover 191 flights between July 2025 and June 2026. The median arrival is 7 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 IND to DTW

Republic flew 191 of the 979 flights on IND to DTW, about 20% of it. Its 82.0% on time is 2 points better than the route as a whole, which runs 79.7%. Ranked by on-time rate it is number two of three carriers on the route, where the range runs from Delta at 83.1% to SkyWest at 78.8%. 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 IND to DTW
Airline	Flights	On time	Avg delay	Cancelled	Grade
Delta Air Linesthin sample	59	83.1%	102 min	0.00%	B+
Republic Airways (this page)thin sample	191	82.0%	48 min	1.05%	B
SkyWest Airlines	729	78.8%	102 min	1.51%	B

Departure window

When Republic runs best on this route

Departure time is the single lever a traveller controls, and it moves the odds more than most people expect. Each bar below is the on-time rate for flights scheduled to leave inside that window, across 191 flights.

5am–8am—
8am–11am—
11am–2pm92 flights78.9%
2pm–5pm25 flights—
5pm–8pm74 flights82.4%
8pm–5am—

Scale runs 70% to 90%. Rows with fewer than 30 flights show a dash.

The 5pm–8pm window is the strongest at 82.4% on time. The full set of windows spans 4 points.

Across the year

Republic on IND to DTW through the year

Jul–Sep 202523 flights—
Oct–Dec 202558 flights75.0%
Jan–Mar 202629 flights—
Apr–Jun 202681 flights85.2%

Scale runs 65% to 90%. Rows with fewer than 30 flights show a dash.

Monthly volumes are too low here to break the year into twelve reliable readings. What the twelve-month total says is 82.0% on time across 191 flights.

Split by quarter, Republic on IND to DTW logged 23 flights in Jul–Sep 2025, 58 flights in Oct–Dec 2025, 29 flights in Jan–Mar 2026 and 81 flights in Apr–Jun 2026. Fewer than three of those quarters carried the 30 completed flights this site needs before printing a rate, so the 82.0% annual figure is the one to use.

Delay causes

Why Republic runs late on this route

Carriers report a reason for every delay minute they cause, in five DOT categories. The split below is by minutes, not by number of flights, so a handful of very long weather delays weighs as much as many short ones. It covers 1,641 reported delay minutes.

Carrier
35%
National Airspace System
33%
Late-arriving aircraft
31%
Extreme weather
1%

The largest share of delay minutes, 35%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. Unlike weather, that is a management outcome, and it is the category where the gap between two carriers on the same schedule is genuinely earned. It accounts for 577 of the 1,641 delay minutes reported here. The split is drawn from 1,641 reported delay minutes.

33% of delay minutes are charged to the National Airspace System: air traffic volume, runway configuration, ground stops. No carrier can price its way out of that, which is why airport choice moves the number here more than carrier choice does. That is 545 minutes out of 1,641, against a national NAS share of 21%.

Cancellations sit at 1.05% against a national 1.81%, which is ordinary. Diversions add another 0.00%.

Connections and stage length

What a delay here costs

Badly late arrivals are rare here: only 4.2% land an hour or more behind schedule, against 8.1% 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.

At 231 miles this is a short hop, and stage length matters more than it looks. A flight this short spends under two hours in the air, which leaves almost nothing to claw back a late pushback with. Delay here is decided on the ground, in the turn, which is why the 5pm–8pm window matters as much as it does.

The return leg runs 83.6% on time across 192 flights, within 2 points of this direction. The two legs are scored separately because they usually differ; on this city pair they happen not to.

One caution: this is a thin sample. 191 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 DTW

Put together: treat all of this as provisional. 191 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 82.0% headline is the most reliable number on the page; the hour and month splits below it are built on a few dozen flights each. 189 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