John Glenn Columbus International in April 2025

83.7%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 April 2025, reporting carriers scheduled 3,824 domestic departures from John Glenn Columbus International (CMH). 83.7% left less than 15 minutes late and 82.7% reached their destination on time; 0.9% were cancelled.

Nationally that month, 80.6% of flights departed on time and 79.5% arrived on time, so CMH departures were 3.1 points above the national departure figure.

A year earlier, in April 2024, the airport had 3,351 departures with 85.4% leaving on time: a change of −1.7 points, with flights up 14%.

Flights arriving at CMH that month were on time 79.4% of the time (3,827 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, late-arriving aircraft 40%, air carrier 32% and national aviation system 25%.

On time 82.7%
Arrived 15+ minutes late 16.3%
Cancelled 0.9%
Diverted 0.1%

Every scheduled departure from CMH 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	CMH, 12 months to Jul 2026	All reported flights, Apr 2025
Departed on time	83.7%	85.4%	79.6%	80.6%
Arrived on time	82.7%	84.8%	79.0%	79.5%
Cancelled	0.9%	0.3%	2.0%	0.8%
Average departure delay (late minutes only)	11.2 min	11.0 min	15.0 min	14.1 min
Scheduled departures a day	128	112	123	19,465
Scheduled departures	3,824	3,351	44,711	583,950

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
YX Republic Airline	1,132	30%	84.6%	-0.8 min	0.4%
WN Southwest Airlines	1,035	27%	85.4%	1.0 min	0.4%
AA American Airlines	323	8%	75.9%	10.6 min	3.1%
MQ Envoy Air	303	8%	82.5%	7.5 min	1.0%
DL Delta Air Lines	269	7%	87.0%	-3.2 min	0.4%
NK Spirit Airlines	253	7%	87.4%	-1.1 min	1.2%
UA United Airlines	202	5%	76.2%	14.8 min	1.0%
OH PSA Airlines	147	4%	57.8%	26.2 min	3.4%
OO SkyWest Airlines	107	3%	85.0%	2.9 min	0.0%
AS Alaska Airlines	30	1%	70.0%	8.9 min	3.3%
F9 Frontier Airlines	23	1%	91.3%	-10.5 min	0.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
CMH–ORD	Columbus to Chicago	392	79.3%	8.6 min	1.3%
CMH–LGA	Columbus to New York	296	82.8%	2.0 min	0.0%
CMH–ATL	Columbus to Atlanta	266	85.7%	-1.3 min	0.4%
CMH–MCO	Columbus to Orlando	213	89.2%	-3.6 min	0.9%
CMH–CLT	Columbus to Charlotte	177	75.7%	11.0 min	2.3%
CMH–DCA	Columbus to Washington	171	67.3%	12.8 min	1.2%
CMH–BOS	Columbus to Boston	164	93.3%	-8.0 min	0.0%
CMH–DFW	Columbus to Dallas/Fort Worth	147	68.0%	9.7 min	4.8%
CMH–IAD	Columbus to Washington	141	85.1%	-2.2 min	0.0%
CMH–DEN	Columbus to Denver	140	80.0%	8.3 min	0.0%
CMH–JFK	Columbus to New York	137	88.3%	-5.6 min	0.0%
CMH–DTW	Columbus to Detroit	120	90.0%	-1.7 min	0.0%

By scheduled departure hour

100

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	32.0%	32.7%	13,279
Late-arriving aircraft	40.3%	39.4%	16,756
National Aviation System	24.8%	22.2%	10,300
Extreme weather	2.9%	5.5%	1,224
Security	0.0%	0.2%	0

41,559 delay minutes on 625 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 CMH on time in April 2025?

83.7% of 3,824 scheduled domestic departures left less than 15 minutes late, and 82.7% 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, 85.4% of 3,351 departures left on time and 0.3% were cancelled, against 83.7% and 0.9% 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 CMH · methodology · corrections.