Cincinnati/Northern Kentucky International in May 2025

78.4%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 May 2025, reporting carriers scheduled 2,941 domestic departures from Cincinnati/Northern Kentucky International (CVG). 78.4% left less than 15 minutes late and 76.8% reached their destination on time; 0.9% were cancelled.

Nationally that month, 76.7% of flights departed on time and 75.4% arrived on time, so CVG departures were 1.7 points above the national departure figure.

A year earlier, in May 2024, the airport had 3,709 departures with 78.1% leaving on time: a change of +0.3 points, with flights down 21%.

Flights arriving at CVG that month were on time 73.5% of the time (2,943 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, air carrier 37%, late-arriving aircraft 32% and national aviation system 27%.

On time 76.8%
Arrived 15+ minutes late 21.9%
Cancelled 0.9%
Diverted 0.4%

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

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

Measure	May 2025	May 2024	CVG, 12 months to Jul 2026	All reported flights, May 2025
Departed on time	78.4%	78.1%	79.8%	76.7%
Arrived on time	76.8%	76.0%	77.6%	75.4%
Cancelled	0.9%	1.2%	1.9%	1.0%
Average departure delay (late minutes only)	16.8 min	17.4 min	16.2 min	17.5 min
Scheduled departures a day	98	124	93	20,188
Scheduled departures	2,941	3,709	33,916	605,648

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
DL Delta Air Lines	644	22%	82.8%	0.3 min	0.0%
YX Republic Airline	438	15%	79.7%	8.3 min	0.7%
G4 Allegiant Air	319	11%	75.9%	17.0 min	0.0%
F9 Frontier Airlines	273	9%	78.4%	7.1 min	0.7%
AA American Airlines	269	9%	68.8%	11.5 min	1.5%
OH PSA Airlines	268	9%	66.8%	23.5 min	4.9%
MQ Envoy Air	223	8%	76.2%	12.7 min	0.4%
UA United Airlines	212	7%	81.1%	9.1 min	0.5%
WN Southwest Airlines	184	6%	66.3%	19.1 min	0.5%
OO SkyWest Airlines	80	3%	81.3%	5.2 min	2.5%
AS Alaska Airlines	31	1%	87.1%	-2.8 min	0.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
CVG–ORD	Cincinnati to Chicago	354	80.5%	11.0 min	0.6%
CVG–ATL	Cincinnati to Atlanta	249	81.1%	-1.0 min	0.4%
CVG–CLT	Cincinnati to Charlotte	183	64.5%	25.1 min	3.8%
CVG–MCO	Cincinnati to Orlando	162	78.4%	8.3 min	0.0%
CVG–DFW	Cincinnati to Dallas/Fort Worth	161	65.8%	14.0 min	1.9%
CVG–BOS	Cincinnati to Boston	151	75.5%	11.4 min	0.0%
CVG–DEN	Cincinnati to Denver	118	66.9%	12.1 min	0.0%
CVG–PHL	Cincinnati to Philadelphia	108	72.2%	17.6 min	0.9%
CVG–MSP	Cincinnati to Minneapolis	101	84.2%	-1.2 min	0.0%
CVG–DCA	Cincinnati to Washington	88	67.0%	14.4 min	6.8%
CVG–FLL	Cincinnati to Fort Lauderdale	88	83.0%	8.2 min	0.0%
CVG–LGA	Cincinnati to New York	81	75.3%	12.7 min	1.2%

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), May 2025.

Delay causes

BTS cause category	Share of delay minutes	National, May 2025	Minutes
Air carrier	36.5%	29.3%	17,825
Late-arriving aircraft	32.1%	37.8%	15,669
National Aviation System	26.5%	25.9%	12,929
Extreme weather	4.8%	6.9%	2,332
Security	0.0%	0.1%	18

48,773 delay minutes on 645 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 May 2025?

78.4% of 2,941 scheduled domestic departures left less than 15 minutes late, and 76.8% reached their destination on time. The national figures that month were 76.7% and 75.4%.

How does that compare with a year earlier?

In May 2024, 78.1% of 3,709 departures left on time and 1.2% were cancelled, against 78.4% and 0.9% in May 2025.

Provenance

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