Route reliability record
LAS→IND
Las Vegas to Indianapolis
- Flights
- 1,333
- Period
- July 2025 to June 2026
- Distance
- 1,590 mi
- Carriers
- 4
This route sits in the middle of the pack with a C+. Close to three flights in four arrive on time by the DOT's definition, 3 points worse than the national rate of 77.6%. The late ones land about an hour behind schedule. That rests on 1,333 LAS to IND flights, with a median arrival 2 minutes early.
Best time to fly LAS to IND: a 5am–8am departure, ideally on a Tuesday. Flights in that window arrived on time 90.9% of the time and Tuesday flights 83.0%, against 74.6% for the route overall.
The US average over the same twelve months is 77.6%, so there is little to separate this route from the country as a whole. The variation that matters here is internal: which carrier, and what time of day.
Key figures
On time
74.6%
Arrivals under 15 minutes late, of 1,323 completed flights
Avg delay
62 min
Across delayed arrivals only, not all flights
Cancelled
0.45%
National rate is 1.81%
Best carrier
Southwest
73.4% on time across 1,144 flights
These figures cover 1,333 flights between July 2025 and June 2026. Beyond the headline rate, 8.7% 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
Which airline is most reliable on LAS to IND
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 |
|---|---|---|---|---|---|
| Frontier Airlinesthin sample | 14 | 100.0% | — | 0.00% | A+ |
| Spirit Airlinesthin sample | 78 | 85.5% | 51 min | 0.00% | A+ |
| Allegiant Airthin sample | 97 | 76.8% | 109 min | 1.03% | B |
| Southwest Airlines | 1,144 | 73.4% | 59 min | 0.44% | C+ |
Departure window
The best time of day to leave
Departure time matters more here than the choice of carrier. The gap between the best and worst window is 28 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–8am197 flights90.9%
- 8am–11am343 flights85.8%
- 11am–2pm259 flights68.3%
- 2pm–5pm253 flights65.9%
- 5pm–8pm281 flights63.2%
- 8pm–5am—
Scale runs 55% to 95%. Rows with fewer than 30 flights show a dash.
The 5pm–8pm window is where this operation falls apart: 63.2% on time, against 90.9% 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 8am–11am window is the busiest, with 343 flights scheduled in it.
Across the year
When delays peak on this route
This route's year swings by 17 points from best month to worst, which is wide. An annual average tells you very little about the week you are actually flying, so read the strip rather than the headline if your dates are fixed.
November is the best month on the calendar at 82.7% on time. Shoulder season thins the schedule and takes the summer weather with it, and the operation gets its margin back. October was the busiest month here, with 148 flights.
Across the week, Tuesday is the strongest day at 83.0% on time and Monday the weakest at 67.0%. 16 points is a smaller lever than departure hour, but it is free.
Delay causes
Why this route gets delayed
One category carries most of the weight here. Late-arriving aircraft accounts for 47% of the 21,000 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.
- 47%Late-arriving aircraft
- 37%Carrier
- 13%National Airspace System
- 2%Extreme weather
- 1%Security
47% 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 21,000 reported delay minutes here, that single category outweighs weather by 21 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 20,711 reported delay minutes.
The largest share of delay minutes, 37%, 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 7,582 of the 21,000 delay minutes reported here.
Cancellations are rare at 0.45%, 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 actually costs
8.7% 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 about an hour, which a normal layover absorbs.
At 1,590 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 78.2% on time across 1,332 flights, 4 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 4 points of difference.
The sample behind these figures is 1,333 flights, enough that the headline rate is stable to within roughly a point. The hour-block and month splits divide that further, so read the thinner bars with more caution than the headline.
Work out the risk of missing a connection in IND after this flight
What to do with this
Booking this route
Put together: the calendar is the biggest lever here, not the carrier or the hour. November runs 82.7% on time and March 65.3%, a swing of 17 points. If the dates move at all, move them out of March before you think about anything else. 1,323 completed flights over 12 months sit behind that.
Common questions
LAS to IND questions
How often is LAS to IND delayed?
About one flight in four arrives at least 15 minutes late, which is the Department of Transportation's definition of a delayed arrival. That works out to 25.4% of the 1,333 flights in this analysis, against 22.4% nationally. Delayed flights are late by about an hour on average.
How reliable is LAS to IND compared with the rest of the country?
74.6% of flights arrive on time here against a national 77.6%, a difference of 3 points against it. That is worth a C+ on this site's grading scale.
What time of day has the fewest delays on LAS to IND?
The 5am–8am departure window is the strongest at 90.9% on time. The 5pm–8pm window is the weakest at 63.2%, 28 points behind. Later departures inherit delays from earlier flights the same aircraft has already flown, which is why the curve slopes the way it does.
How bad are March delays on LAS to IND?
March is the weakest month at 65.3% on time, compared with 82.7% in November. Across the year that is 17 points between the best and worst months. Moving flexible dates out of that month is one of the few things that reliably helps.
Related
Where to go next
- IND to LAS — the return legseparate record
- Harry Reid International (LAS) delay statistics
- Indianapolis International (IND) delay statistics
- LAS to LAX, a related route78.8%
- ORD to IND, a related route74.2%
- LAS to DEN, a related route77.0%
- Frontier Airlines on-time record100.0%
- Spirit Airlines on-time record85.5%
- Allegiant Air on-time record76.8%
- Why the first flight of the morning is statistically safest
- The best time of day to fly, according to 7.04 million flight records
Direction matters. LAS to IND and IND to LAS are scored separately because they are separate operations, with different departure banks and different aircraft. Compare the return leg.
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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.