Indianapolis International in December 2025

72.7%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 December 2025, reporting carriers scheduled 3,906 domestic departures from Indianapolis International (IND). 72.7% left less than 15 minutes late and 68.3% reached their destination on time; 1.6% were cancelled.

Nationally that month, 72.0% of flights departed on time and 71.9% arrived on time, so IND departures were 0.7 points above the national departure figure.

A year earlier, in December 2024, the airport had 3,924 departures with 82.7% leaving on time: a change of −10.0 points, with flights down 0%.

Flights arriving at IND that month were on time 69.4% of the time (3,902 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, late-arriving aircraft 35%, national aviation system 30% and air carrier 29%.

On time 68.3%
Arrived 15+ minutes late 30.0%
Cancelled 1.6%
Diverted 0.2%

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

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

Measure	Dec 2025	Dec 2024	IND, 12 months to Jul 2026	All reported flights, Dec 2025
Departed on time	72.7%	82.7%	79.4%	72.0%
Arrived on time	68.3%	81.0%	78.9%	71.9%
Cancelled	1.6%	0.3%	1.9%	1.5%
Average departure delay (late minutes only)	21.4 min	13.4 min	14.9 min	21.2 min
Scheduled departures a day	130	131	133	19,410
Scheduled departures	3,906	3,924	48,559	582,304

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
YX Republic Airline	1,220	31%	68.8%	13.4 min	2.2%
WN Southwest Airlines	1,086	28%	70.4%	10.4 min	0.5%
AA American Airlines	488	12%	68.6%	26.7 min	0.2%
DL Delta Air Lines	359	9%	75.5%	7.7 min	1.7%
UA United Airlines	192	5%	69.8%	12.7 min	0.5%
G4 Allegiant Air	144	4%	54.2%	28.4 min	0.7%
OO SkyWest Airlines	142	4%	52.1%	44.3 min	6.3%
NK Spirit Airlines	101	3%	69.3%	10.9 min	5.9%
F9 Frontier Airlines	62	2%	58.1%	22.1 min	3.2%
OH PSA Airlines	44	1%	54.5%	39.2 min	6.8%
AS Alaska Airlines	41	1%	53.7%	25.3 min	2.4%
MQ Envoy Air	27	1%	74.1%	7.4 min	0.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
IND–ORD	Indianapolis to Chicago	380	65.8%	21.8 min	3.7%
IND–ATL	Indianapolis to Atlanta	256	76.2%	9.2 min	1.2%
IND–MCO	Indianapolis to Orlando	214	72.9%	8.2 min	2.3%
IND–EWR	Indianapolis to Newark	208	69.7%	10.7 min	4.8%
IND–LGA	Indianapolis to New York	195	67.2%	11.7 min	3.1%
IND–DEN	Indianapolis to Denver	189	61.9%	16.4 min	0.5%
IND–CLT	Indianapolis to Charlotte	164	68.9%	38.2 min	0.6%
IND–BOS	Indianapolis to Boston	160	71.9%	9.3 min	1.3%
IND–DCA	Indianapolis to Washington	150	60.0%	19.3 min	2.0%
IND–DFW	Indianapolis to Dallas/Fort Worth	146	68.5%	10.7 min	0.0%
IND–PHX	Indianapolis to Phoenix	127	65.4%	15.1 min	0.0%
IND–MSP	Indianapolis to Minneapolis	108	64.8%	13.5 min	2.8%

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), December 2025.

Delay causes

BTS cause category	Share of delay minutes	National, Dec 2025	Minutes
Air carrier	28.5%	33.3%	24,869
Late-arriving aircraft	35.1%	41.1%	30,567
National Aviation System	29.5%	19.1%	25,758
Extreme weather	6.9%	6.4%	5,979
Security	0.0%	0.2%	23

87,196 delay minutes on 1,170 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 December 2025?

72.7% of 3,906 scheduled domestic departures left less than 15 minutes late, and 68.3% reached their destination on time. The national figures that month were 72.0% and 71.9%.

How does that compare with a year earlier?

In December 2024, 82.7% of 3,924 departures left on time and 0.3% were cancelled, against 72.7% and 1.6% in December 2025.

Provenance

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