Carrier route record

G4IND→FLL

Allegiant Air · Indianapolis to Fort Lauderdale

Flights: 232
Period: July 2025 to June 2026
Share of route: 22%
Carriers: 4

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

Allegiant on IND to FLL draws a C. About one flight in three arrives at least 15 minutes late, and the typical late arrival is about an hour behind schedule. Build slack into anything you connect to. That rests on 232 flights. The strongest carrier on the route with a full sample, Southwest Airlines, flew 417 at 82.4% on time.

The national on-time rate over the same period is 77.6%, so Allegiant on IND to FLL runs 10 points behind the country as a whole. Across a thousand flights that is about 102 extra late arrivals.

On time

67.4%

Arrivals under 15 minutes late, of 227 completed flights

Avg delay

68 min

Across delayed arrivals only, not all flights

Cancelled

1.29%

National rate is 1.81%

Whole route

78.2%

Every carrier on IND to FLL, 1,044 flights

These figures cover 232 flights between July 2025 and June 2026. Beyond the headline rate, 13.7% 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

Allegiant against every carrier on IND to FLL

Allegiant flew 232 of the 1,044 flights on IND to FLL, about 22% of it. Its 67.4% on time is 11 points worse than the route as a whole, which runs 78.2%. Ranked by on-time rate it is last of four carriers on the route, where the range runs from Southwest at 82.4% to Allegiant at 67.4%. One of those carriers flew fewer than 365 flights here, so treat their positions as rough.

The two carriers here are closely matched: 2 points separate the best from the worst. At that spread, schedule and price are better tie-breakers than reliability. Sample sizes are shown so you can see which rows are worth weighing.

On-time performance by carrier on IND to FLL
Airline	Flights	On time	Avg delay	Cancelled	Grade
Southwest Airlines	417	82.4%	41 min	0.72%	B+
Spirit Airlines	372	80.5%	105 min	3.49%	B−
Frontier Airlinesthin sample	23	71.4%	31 min	8.70%	C−
Allegiant Air (this page)thin sample	232	67.4%	68 min	1.29%	C

Spirit Airlines cancels 3.5% of what it schedules here, the highest in the table. A cancelled flight never appears in an on-time rate, so read that column alongside the punctuality one rather than after it.

Departure window

When Allegiant runs best on this route

Departure time matters more here than the choice of carrier. The gap between the best and worst window is 71 points, against 2 points between the best and worst carrier. Each bar is the on-time rate for flights scheduled inside that window.

5am–8am34 flights93.9%
8am–11am23 flights—
11am–2pm55 flights72.2%
2pm–5pm87 flights69.8%
5pm–8pm32 flights22.6%
8pm–5am1 flights—

Scale runs 15% to 100%. Rows with fewer than 30 flights show a dash.

The 5pm–8pm window is where this operation falls apart: 22.6% on time, against 93.9% 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 2pm–5pm window is the busiest, with 87 flights scheduled in it.

Across the year

Allegiant on IND to FLL through the year

Jul–Sep 202547 flights83.0%
Oct–Dec 202553 flights71.2%
Jan–Mar 202661 flights55.9%
Apr–Jun 202671 flights63.8%

Scale runs 45% 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 67.4% on time across 232 flights.

Allegiant on IND to FLL did not run the same all year. Its best quarter was Jul–Sep 2025 at 83.0% on time and its weakest Jan–Mar 2026 at 55.9%, a swing of 27 points on roughly 58 flights a quarter. The twelve-month rate averages over that, so if you are flying in a weak quarter the quarter's own figure is the better guide.

Across the week, Thursday is the strongest day at 82.7% on time and Monday the weakest at 47.4%. 35 points is a smaller lever than departure hour, but it is free.

Delay causes

Why Allegiant runs late on this route

One category carries most of the weight here. Late-arriving aircraft accounts for 47% of the 5,028 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
47%
National Airspace System
40%
Carrier
12%
Extreme weather
1%
Security
0%

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 5,028 reported delay minutes here, that single category outweighs weather by 36 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 5,028 reported delay minutes.

40% 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 2,002 minutes out of 5,028, against a national NAS share of 21%.

Cancellations sit at 1.29% against a national 1.81%, which is ordinary. Diversions add another 0.86%.

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. 13.7% 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.

The 1,005 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 61.1% on time across 232 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. 232 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 Allegiant on IND to FLL

Put together: treat all of this as provisional. 232 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 67.4% headline is the most reliable number on the page; the hour and month splits below it are built on a few dozen flights each. 227 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