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DelayAtlas

Carrier route record

AALAXIND

American Airlines · Los Angeles to Indianapolis

Flights
466
Period
July 2025 to June 2026
Share of route
55%
Carriers
5
C+GRADE

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

American on LAX to IND sits in the middle of the pack with a C+. Close to three flights in four arrive on time by the DOT's definition, 4 points worse than the national rate of 77.6%. The late ones land close to two hours behind schedule. That rests on 466 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 LAX to IND from the country as a whole. The variation that matters here is internal: which carrier, and what time of day.

Key figures

On time

74.0%

Arrivals under 15 minutes late, of 462 completed flights

Avg delay

101 min

Across delayed arrivals only, not all flights

Cancelled

0.64%

National rate is 1.81%

Whole route

81.1%

Every carrier on LAX to IND, 855 flights

These figures cover 466 flights between July 2025 and June 2026. Beyond the headline rate, 12.3% of arrivals land a full hour or more behind schedule. That is the number that wrecks a connection, and it is not visible in an on-time percentage alone.

Carrier by carrier

American against every carrier on LAX to IND

American flew 466 of the 855 flights on LAX to IND, most of the route. Its 74.0% on time is 7 points worse than the route as a whole, which runs 81.1%. Ranked by on-time rate it is number three of five carriers on the route, where the range runs from Delta at 92.2% to Southwest at 50.0%. Four 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 LAX to IND
AirlineFlightsOn timeAvg delayCancelledGrade
Delta Air Linesthin sample33592.2%57 min0.30%A+
Spirit Airlinesthin sample3485.3%143 min0.00%A+
American Airlines (this page)46674.0%101 min0.64%C+
Allegiant Airthin sample1258.3%132 min0.00%D+
Southwest Airlinesthin sample850.0%77 min0.00%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 29 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–11am361 flights76.0%
  • 11am–2pm1 flights
  • 2pm–5pm1 flights
  • 5pm–8pm58 flights55.2%
  • 8pm–5am45 flights84.1%

Scale runs 45% to 90%. Rows with fewer than 30 flights show a dash.

The 5pm–8pm window is where this operation falls apart: 55.2% on time, against 84.1% for the 8pm–5am 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 8am–11am window is the busiest, with 361 flights scheduled in it.

Across the year

American on LAX to IND through the year

On-time rate by calendar month79J78F74M72A65M72J90J61AS73O79N81D
Darker means more delays. Figures are on-time percentages.July best, August worst

August is the worst month at 61.3% on time, 29 points below July, the best at 90.3%. Summer afternoon convection and peak-season schedules land on the same weeks every year, so this is a pattern you can book around rather than a run of bad luck. June was the busiest month here, with 54 flights.

Across the week, Friday is the strongest day at 84.4% on time and Saturday the weakest at 62.3%. 22 points is a smaller lever than departure hour, but it is free.

On-time rate by day of the week66.7Mon79.6Tue77.4Wed70.8Thu84.4Fri62.3Sat76.7Sun
Monday: 66.7 percent on time. Tuesday: 79.6 percent on time. Wednesday: 77.4 percent on time. Thursday: 70.8 percent on time. Friday: 84.4 percent on time. Saturday: 62.3 percent on time. Sunday: 76.7 percent on time

Delay causes

Why American runs late on this route

One category carries most of the weight here. Late-arriving aircraft accounts for 73% of the 12,000 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.

  • Late-arriving aircraft
    73%
  • Carrier
    21%
  • National Airspace System
    6%

73% 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 12,000 reported delay minutes here, that single category outweighs weather by 73 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. The split is drawn from 12,143 reported delay minutes.

Cancellations are rare at 0.64%, below the national 1.81% and low enough to earn the plus on the grade. Roughly one flight in 100 is called off; the risk here is arriving late, not not arriving.

Connections and stage length

What a delay here costs

For anyone connecting, the number to weigh is not the on-time rate but the tail behind it. 12.3% of arrivals land a full hour or more behind schedule, against 8.1% nationally. A 45-minute layover does not survive that, and no amount of walking quickly changes it. Ninety minutes is the honest minimum here, and two hours if the onward flight is on a separate ticket.

At 1,814 miles this is transcontinental flying, and long routes get a quiet structural advantage. Scheduled block time on a flight this length carries more padding in absolute minutes, so a twenty-minute late departure often still becomes an on-time arrival. Read the on-time rate here as slightly flattering next to a short-haul route with the same operational quality.

The return leg is a different operation and performs like one: it runs 82.5% on time across 466 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. 466 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 LAX to IND

Put together: treat all of this as provisional. 466 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 74.0% headline is the most reliable number on the page; the hour and month splits below it are built on a few dozen flights each. 462 completed flights over 12 months sit behind that.

Related

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.