Cincinnati/Northern Kentucky International in August 2025

81.3%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 August 2025, reporting carriers scheduled 2,894 domestic departures from Cincinnati/Northern Kentucky International (CVG). 81.3% left less than 15 minutes late and 79.3% reached their destination on time; 1.1% were cancelled.

Nationally that month, 76.8% of flights departed on time and 76.3% arrived on time, so CVG departures were 4.5 points above the national departure figure.

A year earlier, in August 2024, the airport had 3,599 departures with 77.0% leaving on time: a change of +4.3 points, with flights down 20%.

Flights arriving at CVG that month were on time 75.7% of the time (2,890 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, late-arriving aircraft 38%, air carrier 33% and national aviation system 20%.

On time 79.3%
Arrived 15+ minutes late 18.9%
Cancelled 1.1%
Diverted 0.6%

Every scheduled departure from CVG in August 2025, judged by arrival at the destination.

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

Measure	Aug 2025	Aug 2024	CVG, 12 months to Jul 2026	All reported flights, Aug 2025
Departed on time	81.3%	77.0%	79.8%	76.8%
Arrived on time	79.3%	75.7%	77.6%	76.3%
Cancelled	1.1%	3.1%	1.9%	1.1%
Average departure delay (late minutes only)	15.6 min	17.2 min	16.2 min	17.6 min
Scheduled departures a day	97	120	93	20,079
Scheduled departures	2,894	3,599	33,916	602,378

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
DL Delta Air Lines	693	24%	84.6%	0.3 min	0.3%
YX Republic Airline	483	17%	83.9%	3.4 min	1.7%
G4 Allegiant Air	326	11%	79.8%	11.0 min	0.0%
AA American Airlines	301	10%	66.1%	21.3 min	2.0%
F9 Frontier Airlines	255	9%	84.7%	0.8 min	1.2%
OH PSA Airlines	195	7%	72.3%	17.9 min	3.6%
UA United Airlines	190	7%	74.7%	13.3 min	2.1%
MQ Envoy Air	177	6%	81.4%	6.8 min	0.6%
WN Southwest Airlines	169	6%	82.8%	3.4 min	0.0%
OO SkyWest Airlines	55	2%	63.6%	43.3 min	1.8%
AS Alaska Airlines	50	2%	56.0%	20.3 min	0.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
CVG–ORD	Cincinnati to Chicago	408	74.5%	15.4 min	2.5%
CVG–ATL	Cincinnati to Atlanta	279	86.7%	-3.5 min	1.1%
CVG–DFW	Cincinnati to Dallas/Fort Worth	150	64.7%	14.9 min	4.0%
CVG–CLT	Cincinnati to Charlotte	146	73.3%	34.7 min	0.7%
CVG–BOS	Cincinnati to Boston	140	87.9%	1.3 min	0.7%
CVG–DEN	Cincinnati to Denver	135	76.3%	13.8 min	1.5%
CVG–MCO	Cincinnati to Orlando	125	72.0%	8.2 min	0.0%
CVG–MSP	Cincinnati to Minneapolis	113	82.3%	-0.6 min	0.0%
CVG–DCA	Cincinnati to Washington	84	64.3%	9.2 min	3.6%
CVG–PHL	Cincinnati to Philadelphia	81	75.3%	12.7 min	2.5%
CVG–SEA	Cincinnati to Seattle	81	72.8%	8.2 min	0.0%
CVG–FLL	Cincinnati to Fort Lauderdale	76	76.3%	7.2 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), August 2025.

Delay causes

BTS cause category	Share of delay minutes	National, Aug 2025	Minutes
Air carrier	32.9%	33.1%	14,630
Late-arriving aircraft	37.9%	40.5%	16,849
National Aviation System	20.3%	19.2%	9,022
Extreme weather	8.7%	7.0%	3,881
Security	0.0%	0.1%	22

44,404 delay minutes on 548 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 August 2025?

81.3% of 2,894 scheduled domestic departures left less than 15 minutes late, and 79.3% reached their destination on time. The national figures that month were 76.8% and 76.3%.

How does that compare with a year earlier?

In August 2024, 77.0% of 3,599 departures left on time and 3.1% were cancelled, against 81.3% and 1.1% in August 2025.

Provenance

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