Cincinnati/Northern Kentucky International in December 2025

71.4%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 2,710 domestic departures from Cincinnati/Northern Kentucky International (CVG). 71.4% left less than 15 minutes late and 66.3% reached their destination on time; 1.7% were cancelled.

Nationally that month, 72.0% of flights departed on time and 71.9% arrived on time, so CVG departures were 0.6 points below the national departure figure.

A year earlier, in December 2024, the airport had 3,206 departures with 79.7% leaving on time: a change of −8.3 points, with flights down 15%.

Flights arriving at CVG that month were on time 66.7% of the time (2,709 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, late-arriving aircraft 37%, national aviation system 28% and air carrier 27%.

On time 66.3%
Arrived 15+ minutes late 31.7%
Cancelled 1.7%
Diverted 0.3%

Every scheduled departure from CVG 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	CVG, 12 months to Jul 2026	All reported flights, Dec 2025
Departed on time	71.4%	79.7%	79.8%	72.0%
Arrived on time	66.3%	78.3%	77.6%	71.9%
Cancelled	1.7%	0.7%	1.9%	1.5%
Average departure delay (late minutes only)	25.3 min	16.8 min	16.2 min	21.2 min
Scheduled departures a day	90	107	93	19,410
Scheduled departures	2,710	3,206	33,916	582,304

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
DL Delta Air Lines	638	24%	71.3%	10.8 min	2.5%
YX Republic Airline	380	14%	67.1%	16.6 min	2.1%
G4 Allegiant Air	276	10%	67.0%	15.5 min	0.4%
OH PSA Airlines	276	10%	60.1%	34.2 min	2.2%
F9 Frontier Airlines	274	10%	57.7%	35.2 min	2.6%
AA American Airlines	219	8%	70.8%	16.7 min	0.0%
MQ Envoy Air	216	8%	67.6%	17.1 min	1.9%
WN Southwest Airlines	174	6%	71.3%	13.5 min	0.6%
UA United Airlines	166	6%	69.9%	14.9 min	0.0%
OO SkyWest Airlines	62	2%	46.8%	84.2 min	4.8%
AS Alaska Airlines	29	1%	31.0%	30.8 min	0.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
CVG–ORD	Cincinnati to Chicago	334	54.2%	43.1 min	3.3%
CVG–ATL	Cincinnati to Atlanta	239	77.4%	4.7 min	2.5%
CVG–BOS	Cincinnati to Boston	164	75.0%	4.7 min	0.0%
CVG–MCO	Cincinnati to Orlando	147	64.6%	23.6 min	1.4%
CVG–CLT	Cincinnati to Charlotte	143	66.4%	33.7 min	0.7%
CVG–DFW	Cincinnati to Dallas/Fort Worth	137	70.8%	17.1 min	0.7%
CVG–DEN	Cincinnati to Denver	122	68.9%	19.5 min	0.0%
CVG–MIA	Cincinnati to Miami	107	68.2%	15.6 min	0.0%
CVG–PHL	Cincinnati to Philadelphia	99	65.7%	23.0 min	3.0%
CVG–DCA	Cincinnati to Washington	86	52.3%	37.3 min	2.3%
CVG–FLL	Cincinnati to Fort Lauderdale	79	60.8%	30.1 min	2.5%
CVG–IAD	Cincinnati to Washington	70	68.6%	10.8 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), December 2025.

Delay causes

BTS cause category	Share of delay minutes	National, Dec 2025	Minutes
Air carrier	27.3%	33.3%	19,704
Late-arriving aircraft	36.8%	41.1%	26,564
National Aviation System	27.5%	19.1%	19,844
Extreme weather	8.3%	6.4%	5,974
Security	0.3%	0.2%	186

72,272 delay minutes on 858 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 CVG on time in December 2025?

71.4% of 2,710 scheduled domestic departures left less than 15 minutes late, and 66.3% 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, 79.7% of 3,206 departures left on time and 0.7% were cancelled, against 71.4% and 1.7% 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 CVG · methodology · corrections.