Carrier route record
AAIND→MIA
American Airlines · Indianapolis to Miami
- Flights
- 749
- Period
- July 2025 to June 2026
- Share of route
- 81%
- Carriers
- 6
Historical statistics for July 2025 to June 2026, not live status. For today’s flights, check with American Airlines.
American on IND to MIA lands a B, 3 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 close to two hours on average. That is a workable record, not a spotless one. That rests on 749 flights, with a median arrival 7 minutes early.
The US average over the same twelve months is 77.6%, so there is little to separate American on IND to MIA from the country as a whole. The variation that matters here is internal: which carrier, and what time of day.
Key figures
On time
80.3%
Arrivals under 15 minutes late, of 736 completed flights
Avg delay
104 min
Across delayed arrivals only, not all flights
Cancelled
1.20%
National rate is 1.81%
Whole route
78.9%
Every carrier on IND to MIA, 928 flights
These figures cover 749 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
American against every carrier on IND to MIA
American flew 749 of the 928 flights on IND to MIA, most of the route. Its 80.3% on time is about level with the route as a whole at 78.9%. Ranked by on-time rate it is first of six carriers on the route, where the range runs from American at 80.3% to Republic at 50.0%. Five 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.
| Airline | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| American Airlines (this page) | 749 | 80.3% | 104 min | 1.20% | B |
| Frontier Airlinesthin sample | 4 | 75.0% | 86 min | 0.00% | B+ |
| Southwest Airlinesthin sample | 113 | 74.3% | 46 min | 0.00% | C+ |
| Envoy Airthin sample | 56 | 73.2% | 72 min | 0.00% | C+ |
| Delta Air Linesthin sample | 2 | 50.0% | 22 min | 0.00% | F+ |
| Republic Airwaysthin sample | 4 | 50.0% | 31 min | 0.00% | F+ |
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 22 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–8am365 flights86.4%
- 8am–11am33 flights84.4%
- 11am–2pm144 flights85.9%
- 2pm–5pm7 flights—
- 5pm–8pm199 flights64.1%
- 8pm–5am1 flights—
Scale runs 55% to 90%. Rows with fewer than 30 flights show a dash.
The 5pm–8pm window is where this operation falls apart: 64.1% on time, against 86.4% for the 5am–8am slot. By evening the aircraft flying these rotations have absorbed a full day of small delays and there is no slack left to recover in. The 5am–8am window is the busiest, with 365 flights scheduled in it.
Across the year
American on IND to MIA through the year
December is the weak month at 62.1% on time, against 92.5% in February. 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. January was the busiest month here, with 88 flights.
Across the week, Tuesday is the strongest day at 89.7% on time and Sunday the weakest at 71.7%. 18 points is a smaller lever than departure hour, but it is free.
Delay causes
Why American runs late on this route
One category carries most of the weight here. Carrier accounts for 49% of the 15,000 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.
- 49%Carrier
- 34%Late-arriving aircraft
- 9%National Airspace System
- 8%Extreme weather
- 0%Security
The largest share of delay minutes, 49%, 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 7,482 of the 15,000 delay minutes reported here. The split is drawn from 15,125 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 86.4% on time here.
Cancellations sit at 1.20% against a national 1.81%, which is ordinary. Diversions add another 0.53%.
Connections and stage length
What a delay here costs
6.9% 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 close to two hours, which a normal layover absorbs.
The 1,020 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 74.2% on time across 750 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. 749 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 MIA
Put together: treat all of this as provisional. 749 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 80.3% headline is the most reliable number on the page; the hour and month splits below it are built on a few dozen flights each. 736 completed flights over 12 months sit behind that.
Related
Where to go next
- IND to MIA, every carrier
- American on MIA to IND, the return leg
- Southwest Airlines on IND to MIA74.3%
- American Airlines network-wide record
- Indianapolis International (IND) delay statistics
- Miami International (MIA) delay statistics
- Why the first flight of the morning is statistically safest
- The best time of day to fly, according to 7.04 million flight records
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.