Indianapolis International in September 2024

87.7%departed on time

BTS: A flight is counted as on time if it arrived less than 15 minutes after its scheduled time. Only carriers with at least 0.5 percent of domestic scheduled passenger revenue report.

In September 2024, reporting carriers scheduled 3,818 domestic departures from Indianapolis International (IND). 87.7% left less than 15 minutes late and 87.3% reached their destination on time; 0.5% were cancelled.

Nationally that month, 84.4% of flights departed on time and 83.9% arrived on time, so IND departures were 3.3 points above the national departure figure.

A year earlier, in September 2023, the airport had 3,745 departures with 84.1% leaving on time: a change of +3.6 points, with flights up 2%.

Flights arriving at IND that month were on time 85.0% of the time (3,822 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, late-arriving aircraft 41%, air carrier 35% and national aviation system 22%.

On time 87.3%
Arrived 15+ minutes late 12.1%
Cancelled 0.5%
Diverted 0.1%

Every scheduled departure from IND in September 2024, judged by arrival at the destination.

September 2024 against a year earlier, the airport's year and the nation

Measure	Sep 2024	Sep 2023	IND, 12 months to Jul 2026	All reported flights, Sep 2024
Departed on time	87.7%	84.1%	79.4%	84.4%
Arrived on time	87.3%	81.7%	78.9%	83.9%
Cancelled	0.5%	2.0%	1.9%	0.6%
Average departure delay (late minutes only)	8.1 min	10.5 min	14.9 min	10.6 min
Scheduled departures a day	127	125	133	19,421
Scheduled departures	3,818	3,745	48,559	582,622

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
YX Republic Airline	1,152	30%	92.4%	-7.0 min	0.1%
WN Southwest Airlines	763	20%	87.0%	0.2 min	0.5%
AA American Airlines	600	16%	80.8%	3.8 min	0.8%
DL Delta Air Lines	400	10%	88.3%	1.5 min	0.0%
UA United Airlines	213	6%	86.4%	-2.0 min	0.0%
9E Endeavor Air	167	4%	94.6%	-12.1 min	0.6%
NK Spirit Airlines	160	4%	83.1%	0.2 min	1.9%
OO SkyWest Airlines	108	3%	84.3%	2.2 min	0.9%
MQ Envoy Air	75	2%	85.3%	-0.8 min	0.0%
F9 Frontier Airlines	65	2%	83.1%	1.5 min	1.5%
G4 Allegiant Air	60	2%	76.7%	12.5 min	3.3%
AS Alaska Airlines	55	1%	70.9%	8.9 min	0.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
IND–ORD	Indianapolis to Chicago	359	88.0%	-2.9 min	0.0%
IND–ATL	Indianapolis to Atlanta	266	83.8%	7.8 min	0.0%
IND–LGA	Indianapolis to New York	237	95.4%	-10.1 min	0.4%
IND–DEN	Indianapolis to Denver	221	92.8%	-4.7 min	0.0%
IND–EWR	Indianapolis to Newark	188	93.1%	-9.2 min	0.5%
IND–JFK	Indianapolis to New York	180	93.3%	-8.7 min	0.0%
IND–BOS	Indianapolis to Boston	171	85.4%	-3.6 min	0.0%
IND–DCA	Indianapolis to Washington	168	88.7%	-3.6 min	0.0%
IND–DFW	Indianapolis to Dallas/Fort Worth	155	83.9%	-0.7 min	0.0%
IND–PHL	Indianapolis to Philadelphia	155	83.9%	-0.7 min	0.6%
IND–CLT	Indianapolis to Charlotte	153	73.9%	13.9 min	2.6%
IND–DTW	Indianapolis to Detroit	140	90.0%	-2.1 min	0.7%

By scheduled departure hour

On-time share:under 62%6270768288% and over

Share of departures that left less than 15 minutes late, by scheduled hour (local time), September 2024.

Delay causes

BTS cause category	Share of delay minutes	National, Sep 2024	Minutes
Air carrier	35.0%	38.6%	9,667
Late-arriving aircraft	40.6%	38.4%	11,190
National Aviation System	21.6%	18.2%	5,965
Extreme weather	2.8%	4.8%	760
Security	0.0%	0.1%	0

27,582 delay minutes on 463 flights that arrived 15 or more minutes late and carried a cause report. Carriers assign the categories; see what each category means.

Questions and answers

How many flights left IND on time in September 2024?

87.7% of 3,818 scheduled domestic departures left less than 15 minutes late, and 87.3% reached their destination on time. The national figures that month were 84.4% and 83.9%.

How does that compare with a year earlier?

In September 2023, 84.1% of 3,745 departures left on time and 2.0% were cancelled, against 87.7% and 0.5% in September 2024.

Provenance

Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, file for September 2024; public domain. Domestic scheduled flights by reporting carriers, totals and averages only. The site's data runs through July 2026. Full record for IND · methodology · corrections.