Indianapolis International in April 2025

85.0%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 April 2025, reporting carriers scheduled 3,956 domestic departures from Indianapolis International (IND). 85.0% left less than 15 minutes late and 82.8% reached their destination on time; 0.8% were cancelled.

Nationally that month, 80.6% of flights departed on time and 79.5% arrived on time, so IND departures were 4.4 points above the national departure figure.

A year earlier, in April 2024, the airport had 3,947 departures with 85.5% leaving on time: a change of −0.5 points, with flights up 0%.

Flights arriving at IND that month were on time 80.1% of the time (3,956 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, late-arriving aircraft 35%, air carrier 34% and national aviation system 26%.

On time 82.8%
Arrived 15+ minutes late 16.1%
Cancelled 0.8%
Diverted 0.3%

Every scheduled departure from IND in April 2025, judged by arrival at the destination.

April 2025 against a year earlier, the airport's year and the nation

Measure	Apr 2025	Apr 2024	IND, 12 months to Jul 2026	All reported flights, Apr 2025
Departed on time	85.0%	85.5%	79.4%	80.6%
Arrived on time	82.8%	85.3%	78.9%	79.5%
Cancelled	0.8%	0.7%	1.9%	0.8%
Average departure delay (late minutes only)	12.1 min	11.1 min	14.9 min	14.1 min
Scheduled departures a day	132	132	133	19,465
Scheduled departures	3,956	3,947	48,559	583,950

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
YX Republic Airline	1,189	30%	86.2%	-1.4 min	1.0%
WN Southwest Airlines	1,080	27%	84.1%	3.4 min	0.0%
AA American Airlines	509	13%	75.8%	16.6 min	2.4%
DL Delta Air Lines	348	9%	90.5%	-4.2 min	0.3%
UA United Airlines	201	5%	74.6%	6.2 min	1.5%
NK Spirit Airlines	197	5%	84.3%	-2.0 min	0.5%
G4 Allegiant Air	127	3%	74.0%	13.6 min	0.0%
MQ Envoy Air	110	3%	82.7%	17.1 min	0.9%
F9 Frontier Airlines	67	2%	67.2%	8.0 min	3.0%
OH PSA Airlines	61	2%	67.2%	33.4 min	0.0%
AS Alaska Airlines	38	1%	73.7%	7.1 min	0.0%
OO SkyWest Airlines	29	1%	89.7%	-0.9 min	3.4%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
IND–ORD	Indianapolis to Chicago	438	84.9%	4.7 min	1.6%
IND–ATL	Indianapolis to Atlanta	270	88.9%	-1.6 min	0.4%
IND–MCO	Indianapolis to Orlando	219	87.7%	-3.4 min	0.5%
IND–LGA	Indianapolis to New York	191	88.5%	-3.4 min	0.0%
IND–DEN	Indianapolis to Denver	189	73.0%	8.4 min	0.5%
IND–DCA	Indianapolis to Washington	166	79.5%	2.3 min	0.6%
IND–BOS	Indianapolis to Boston	164	86.0%	-5.9 min	0.0%
IND–DFW	Indianapolis to Dallas/Fort Worth	156	67.3%	39.9 min	2.6%
IND–EWR	Indianapolis to Newark	150	67.3%	17.4 min	6.0%
IND–CLT	Indianapolis to Charlotte	149	81.2%	4.0 min	2.7%
IND–PHX	Indianapolis to Phoenix	149	79.9%	7.6 min	0.0%
IND–LAS	Indianapolis to Las Vegas	142	85.9%	-1.5 min	0.0%

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), April 2025.

Delay causes

BTS cause category	Share of delay minutes	National, Apr 2025	Minutes
Air carrier	34.1%	32.7%	16,296
Late-arriving aircraft	35.2%	39.4%	16,854
National Aviation System	25.5%	22.2%	12,181
Extreme weather	5.2%	5.5%	2,507
Security	0.0%	0.2%	20

47,858 delay minutes on 638 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 April 2025?

85.0% of 3,956 scheduled domestic departures left less than 15 minutes late, and 82.8% reached their destination on time. The national figures that month were 80.6% and 79.5%.

How does that compare with a year earlier?

In April 2024, 85.5% of 3,947 departures left on time and 0.7% were cancelled, against 85.0% and 0.8% in April 2025.

Provenance

Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, file for April 2025; 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.